Quiz Questions

Question 1 1 Marks

How many seconds is 1 Degree?

A

6000%

B

36000%

C

360000%

D

3600000%

Question 2 1 Marks

A thread is represented as M12 x 1.5. What does represent the letter 12?

A

Major diameter

B

Minor diameter

C

Pitch

D

Root diameter

Question 3 1 Marks

Which chuck is mainly used for getting a
very effective grip over the job?

A

Push - out chucks

B

Collect chuck

C

Magnetic chuck

D

Hydraulic chuck

Question 4 1 Marks

What is the thread depth of square thread SQ60x9?

A

4.5 mm

B

9.0 mm

C

18 mm

D

42 mm

Question 5 1 Marks

How can measure the minor diameter of a internal thread accurately?

A

By three wire method

B

By screw thread micrometer

C

By plug gauge

D

By using slip gauge and precision rollers

Question 6 1 Marks

Which is main criteria to increase the tool life?

A

Feed

B

Depth of cut

C

Material

D

Cutting speed

Question 7 1 Marks

What is the use of a sine bar?

A

To determine the angle of tapered job

B

To measure the length of a taper job

C

To measure the gap

D

To measure the diameter of the job

Question 8 1 Marks

Which is the welding process, if base metal and filler is melted to form the joint?

A

By braze welding

B

By arc welding

C

By gas welding

D

By tig welding

Question 9 1 Marks

Calculate the depth of buttress thread diameter 30 mm of pitch 3mm?

A

1.25 mm

B

1.5 mm

C

2.25 mm

D

3.00 mm

Question 10 1 Marks

Calculate the change gear required to cut 4mm pitch thread in a lathe having lead screw of 4mm (lathe stud gear (driver has 50 teeth)

A

25

B

50

C

100

D

150

Question 11 1 Marks

Find the gears required to cut 4.5mm pitch on a lathe having a lead screw of 4 TPI. Gears available from 20 to 120 teeth by 5 teeth with a special gear of 127T.

A

90T on driver and 127T on driven

B

127T on driver and 90T on driven

C

60T on driver and 127T on driven

D

127T on driver and 60T on driven

Question 12 1 Marks

What is the purpose of using thread micrometer?

A

Measure effective diameter

B

Measure minor diameter

C

Measure major diameter

D

Measure pitch of the thread

Question 13 1 Marks

Calculate the driven gear to cut 1.5mm pitch thread on a job using a lathe having lead screw of 4mm pitch with driver gear 30 teeth?

A

50

B

60

C

80

D

100

Question 14 1 Marks

What is removing dull grain in order to make grinding wheel sharp?

A

Loading

B

Glazing

C

Dressing

D

Trueing

Question 15 1 Marks

Which formula is used to find depth of ACME thread?

A

0.5 x pitch

B

0.6134 x pitch

C

0.6403 x pitch

D

0.75 x pitch

Question 16 1 Marks

What is the value of tool life index for cutting cast iron by cemented carbide tool?

A

0.1

B

0.125

C

0.2

D

0.128

Question 17 1 Marks

What is the relationship between pitch and depth of a buttress thread?

A

depth = 0.5 x pitch

B

depth = 0.6134 x pitch

C

depth = 0.6403 x pitch

D

depth = 0.75 x pitch

Question 18 1 Marks

What is the depth of cut for 10TPI BSW thread?

A

0.6403 x 1/10 Inch

B

0.6134 x 1/10 Inch

C

0.6304 x 1/10 Inch

D

0.6314 x 1/10 Inch

Question 19 1 Marks

How is the filler material distributed in the joint in braze welding?

A

By splashing

B

By fission

C

By fusion

D

By capillary action

Question 20 1 Marks

Which wheel is used for grinding tough
materials?

A

Silicon carbide

B

Aluminium oxide

C

Cemented carbide

D

Ceramic

Question 21 1 Marks

Which device is used as datum while marking with Vernier height gauge?

A

Face plate

B

Surface plate

C

Angle plate

D

Driving plate

Question 22 1 Marks

Which method is used for turning steep taper?

A

Form tool

B

Offset tail stock

C

Compound slide swivel

D

Taper turning attachment

Question 23 1 Marks

What is the thread form cut by using
chasers?

A

Trapezoidal thread

B

External and internal V - Thread

C

External square thread

D

Internal square thread

Question 24 1 Marks

What is the minor diameter of screw thread SQ 62 x 10.5 with depth clearance of 0.12 mm?

A

46.64 mm

B

51.26 mm

C

51.88 mm

D

51.00 mm

Question 25 1 Marks

How is the 'length of sine bars' specified?

A

Distance between the centres of the rollers

B

Length of datum surface

C

Length of the rollers

D

Total length of the sine bar

Question 26 1 Marks

What is the use of BSW thread?

A

General purpose fastening

B

Load fitting

C

Fast movement

D

Used in electrical appliances

Question 27 1 Marks

Which is the cause of small particles of the material become embedded in the space between the grains of the grinding wheel?

A

Glazing

B

Loading

C

Grooving

D

Dressing

Question 28 1 Marks

What is the isolating medium to prevent rapid cooling after brazing a tipped tool?

A

Water

B

Mica powder

C

Oil

D

Wet sand

Question 29 1 Marks

Find the change gear (driven gear) to cut 2.5mm pitch thread using a lathe having lead screw of pitch 5mm with driver gear 60 teeth?

A

60

B

100

C

120

D

150

Question 30 1 Marks

Which thread is used for general purpose
fastening?

A

BSW

B

BSF

C

BA

D

Unified

Question 31 1 Marks

What is the main disadvantage of a braze welded joints?

A

The joint not suitable for thicker sections

B

Dissimilar metals can be joined

C

It take more time for repairing

D

Heavy distortion due to heat

Question 32 1 Marks

Which terms are needed to calculate tool life index?

A

Cutting speed and feed

B

Depth of cut and rpm

C

Cutting speed time and index

D

Cutting speed and rpm of job

Question 33 1 Marks

Which method of thread forming does not produce chips and used in mass production?

A

Taps and dies

B

Thread rolling

C

Thread milling

D

Thread grinding

Question 34 1 Marks

What is the name of thread producing method by cold forging and by plastic deformation?

A

Thread rolling

B

Thread milling

C

Thread grinding

D

Thread casting

Question 35 1 Marks

What is the least count of vernier height
gauge?

A

0.001 mm

B

0.002 mm

C

0.005 mm

D

0.020 mm

Question 36 1 Marks

How the thread are formed in thread rolling?

A

Grinding

B

Casting

C

Plastic deformation

D

Milling

Question 37 1 Marks

What is calculated by formula 0.75 x pitch?

A

depth of square thread

B

depth of metric thread

C

depth of acme thread

D

depth of buttress thread

Question 38 1 Marks

What is the formula for finding the depth of
a BIS metric thread?

A

0.6403 x pitch

B

0.6134 x pitch

C

0.6431 x pitch

D

0.6043 x pitch

Question 39 1 Marks

Calculate the driven gear to cut 1.5mm pitch thread on a job using a lathe having lead screw of 5mm pitch with driver gear of 30 teeth?

A

50

B

60

C

100

D

120

Question 40 1 Marks

What is thread element that determine the direction of rotation on screw thread?

A

Pitch of thread

B

Lead of thread

C

Depth of thread

D

Hand of thread

Question 41 1 Marks

How metric chasing dial differ from British chasing dial?

A

Same as British chasing dial

B

One worm wheel and different dial

C

One worm wheel and one dial

D

More than one worm wheel and different dial

Question 42 1 Marks

What is the shape of buttress thread flank?

A

One flank is 90 Degree and the other 45 Degree

B

One flank is 30 Degree and the other 45 Degree

C

One flank is 60 Degree and the other 45 Degree

D

Two flanks are at 60 Degree

Question 43 1 Marks

Which mandrels is NOT used in between lathe centres?

A

Cone mandrels

B

Gang mandrels

C

Stepped mandrels

D

Taper Shank mandrels

Question 44 1 Marks

What is the minor diameter of Trapezoidal square thread Tr 40 x 7 depth clearance of 0.01 mm?

A

32.98 mm

B

33.00 mm

C

36.49 mm

D

36.50 mm

Question 45 1 Marks

Which type of thread is produced by tap and die?

A

Square thread

B

ACME thread

C

V - thread

D

Saw - tooth thread

Question 46 1 Marks

Which one is the example for transmission of motion using thread

A

Rack and pinion

B

Worm and worm shaft

C

Crank and slotted link

D

Bevel gearing

Question 47 1 Marks

What is the angle of metric ACME thread

A

29 Degree

B

30 Degree

C

45 Degree

D

47.5 Degree

Question 48 1 Marks

What will happen if threading tool is set below centre height?

A

Pitch will changed

B

Difficult for catching

C

Thread will be damaged

D

Major diameter will changed

Question 49 1 Marks

What is the disadvantage of chaser?

A

To cut V-thread only

B

To cut square thread only

C

To cut knuckle thread only

D

To cut trapezoid thread only

Question 50 1 Marks

What is the use of hand chaser?

A

To cut new thread

B

Correcting and finishing a thread

C

For production job

D

For making square thread

Question 51 1 Marks

What is the reason for providing buttress thread in carpentry vice?

A

For better appearance

B

For easy use

C

For easy manufacturing

D

Pressure acts at one flank

Question 52 1 Marks

What is the purpose of using v prism method in thread measurement?

A

Measure major diameter

B

Measure minor diameter

C

Measure effective diameter

D

Measure the pitch of the thread

Question 53 1 Marks

What is the formula for finding gear ratio for fractional pitch thread?

A

DR/DN = Leads of screw to be cut X No. Of threads per inch of lead screw

B

DR/DN = TPI on lead screw/ TPI to cut

C

DR/DN = Lead of head screw/ Lead of work

D

DR/DN = Lead of work/ No. Of threads per inch

Question 54 1 Marks

Which mandrel is used for machining similar part where internal diameter vary slightly?

A

Gang mandrels

B

Stepped mandrels

C

Taper Shank mandrels

D

Expansion stud mandrel

Question 55 1 Marks

Which one of the following factor greatly causes to reduce tool life?

A

Cutting speed

B

Feed

C

Depth of cut

D

Material

Question 56 1 Marks

What is the reason for using ACME thread in lathe lead screw?

A

Easily available

B

Manufacturing cost is less

C

Enable easy engagement

D

Suitable for big diameter thread

Question 57 1 Marks

Which angle is ground on ACME threading tool?

A

29 Degree

B

45 Degree

C

55 Degree

D

60 Degree

Question 58 1 Marks

What is the width of the tool to cut square thread of 30 x 3 mm pitch?

A

3 mm

B

1.5 mm

C

6 mm

D

2 mm

Question 59 1 Marks

Which part of the combination set is used
for measuring the angles?

A

Protractor head

B

Square head

C

Centre head

D

Rule

Question 60 1 Marks

How many carriers are available in a set?

A

4 numbers

B

6 numbers

C

8 numbers

D

10 numbers

Question 61 1 Marks

Calculate the amount of off-set if total length of job = 80 mm and tan = 5 Degree 45 minutes?

A

10 mm

B

7 mm

C

8 mm

D

12 mm

Question 62 1 Marks

Which material is used for making nozzle for gas welding?

A

Mild steel

B

High carbon steel

C

Copper

D

Bronze

Question 63 1 Marks

Which is the method to produce accurate
internal thread?

A

Thread chasers

B

Thread rolling

C

Thread milling

D

Using dies

Question 64 1 Marks

Calculate the change gear (driven gear) if driver is 50 teeth to cut 2.5mm pitch thread on a job by lathe having a lead screw of 5mm pitch?

A

60

B

100

C

120

D

150

Question 65 1 Marks

Which is the form of Trapezoidal thread?

A

BSW

B

Metric

C

BSF

D

ACME

Question 66 1 Marks

Which diameter is maintained in a job for making threads by rolling?

A

Major diameter

B

Minor diameter

C

Pitch diameter

D

Root diameter

Question 67 1 Marks

Which type thread is used in lathe lead screw?

A

Metric

B

Buttress

C

Square

D

ACME

Question 68 1 Marks

Calculate the least count of V.B.P if 23 div on
main scale is divided into 12 equal parts

A

1 Degree - 50 Degree

B

100 Degree

C

28 Degree

D

5 Degree

Question 69 1 Marks

What percentage of cutting speed is reduced for tool life dubling?

A

0.081

B

0.082

C

0.083

D

0.084

Question 70 1 Marks

What is the formula used to find flat width of a buttress thread?

A

Pitch/2

B

Pitch/4

C

Pitch/6

D

Pitch/8

Question 71 1 Marks

What is the core dia of square thread 75 x 11 mm pitch?

A

70 mm

B

60 mm

C

64 mm

D

65.8 mm

Question 72 1 Marks

Which is the angle of buttress thread?

A

30 Degree

B

45 Degree

C

55 Degree

D

60 Degree

Question 73 1 Marks

What are the uses of B.S.P thread?

A

General fastening

B

Automobile industries

C

Pipe and pipe fittings

D

Load transmition

Question 74 1 Marks

Calculate the flat width of 10 mm pitch buttress thread?

A

1.25 mm

B

2.25 mm

C

3.25 mm

D

4.25 mm

Question 75 1 Marks

What is the name of device used to drive the work during turning between centres?

A

Lathe carrier

B

Catch plate

C

Driving plate

D

Face plate

Question 76 1 Marks

What is the core diameter of BSW thread of 1 inch outer dia and 8 TPI

A

0.80 Inch

B

0.81 Inch

C

0.83 Inch

D

0.84 Inch

Question 77 1 Marks

Calculate the driven gear to cut 2mm pitch on a job using a lathe having lead screw of 4mm pitch with driven gear 50 teeth?

A

50

B

60

C

100

D

120

Question 78 1 Marks

Convert 8 Degree 44 minutes into minutes?

A

424

B

428

C

524

D

536

Question 79 1 Marks

Which formula is used to find root width of a buttress thread?

A

0.125 x pitch

B

0.317 x pitch

C

0.335 x pitch

D

0.5 x pitch

Question 80 1 Marks

Calculate the change gears necessary to cut a thread of 7/16" lead on a lathe with a lead screw of 4TPI?

A

Driver 70T, Driven 40T

B

Driver 30T, Driven 40T

C

Driven 70T, Driver 40T

D

Driven 30T, Driver 40T

Question 81 1 Marks

Which material is suitable for button die chaser?

A

Low strength material

B

High strength material

C

H.S.S

D

H.C.S

Question 82 1 Marks

What is the purpose of using taper parallels
in thread measurement?

A

To measure the minor diameter of external thread

B

To measure the minor diameter of internal thread

C

To measure the major diameter of external thread

D

To measure the major diameter of internal thread

Question 83 1 Marks

Which one is the disadvantage of taper turning by compound slide method?

A

Only external taper can be turned

B

Damages the centre drilled holes of the work

C

Steep taper cannot be produced

D

Taper length is limited to the movement of the top slide

Question 84 1 Marks

Which material is used for making the head of soldering iron?

A

Forged copper

B

Forged steel

C

Forged aluminium

D

Stainless steel

Question 85 1 Marks

Why the thread chaser is used to form threads?

A

For easy thread cutting

B

To get proper, crest, flat, root radius and profile

C

To time saving

D

To reduce labour

Question 86 1 Marks

Which method of brazing is commonly used to braze of carbide tip on a shank?

A

Furnace brazing

B

Induction brazing

C

Arc brazing

D

Torch brazing

Question 87 1 Marks

Which parameter of a thread is measured by three wire method?

A

Pitch

B

Major diameter

C

Minor diameter

D

Effective diameter

Question 88 1 Marks

Calculate the least count of V.B.P if 23 div on main scale is divided into 12 scale divisions

A

3 minutes

B

5 minutes

C

4 minutes

D

2 minutes

Question 89 1 Marks

What is the criteria for the selection of interchangeable anvil of a screw thread micrometer?

A

Major diameter

B

Minor diameter

C

Profile and pitch

D

Root diameter

Question 90 1 Marks

Which formula is used to find crest width of a buttress thread?

A

0.125 x pitch

B

0.317 x pitch

C

0.335 x pitch

D

0.5 x pitch

Question 91 1 Marks

How to measure the diameter of the small end of a external taper precisely?

A

Sine bar

B

Precision roller with slip gauge

C

Vernier calipers

D

Screw gauge

Question 92 1 Marks

Calculate the gear ratio to cut a 1/4 inch lead on a lathe with lead screw of 2TPI?

A

(2/3)

B

(3/4)

C

(1/2)

D

(1/4)

Question 93 1 Marks

Which is the term used to express grinding
wheels to hold the abrasive particle together?

A

Grain

B

Grit

C

Structure

D

Bond

Question 94 1 Marks

Which bonding material is not affected by
water, acid or normal temperature?

A

Vetrified

B

Resinoid

C

Backlite

D

Rubber

Question 95 1 Marks

Which mandrel is manufactured in order to reduce the number of mandrel?

A

Threaded mandrel

B

Stepped mandrel

C

Solid mandrel

D

Gang mandrel

Question 96 1 Marks

What is formula for finding depth of BSW external thread?

A

0.6134 x pitch

B

0.6403 x pitch

C

0.7 x pitch

D

0.5 x pitch

Question 97 1 Marks

Which method of threading is used in mass production?

A

Use single point cutting tool

B

Thread grinding

C

Using taps and dies

D

Thread rolling

Question 98 1 Marks

What is the reason for using dial indicator instead of scriber point in Vernier height gauge?

A

To check eccentricity

B

For accurate marking

C

For accurate measuring

D

For good appearance

Question 99 1 Marks

Which instrument can measure angle upto an accuracy of 5 minutes?

A

Bevel gauge

B

Combination set

C

Vernier bevel protractor

D

Angle gauge

Question 100 1 Marks

Which form of thread is widely used for fastening purpose?

A

V - thread

B

Square thread

C

Saw tooth thread

D

Knuckle thread

Question 101 1 Marks

What is 1.25 stands for a metric thread designated as M12 x 1.25?

A

Major dia of thread

B

Minor dia of thread

C

Depth of thread

D

Pitch of the thread

Question 102 1 Marks

Which welding method is more suitable for joining dissimilar metals readily?

A

Braze welding

B

Arc welding

C

Tig welding

D

Gas welding

Question 103 1 Marks

What is the depth of square thread 60 x 5 mm pitch?

A

5 mm

B

2.5 mm

C

3 mm

D

4 mm

Question 104 1 Marks

Select a suitable instrument for measuring angles?

A

Vernier caliper

B

Calipers

C

Vernier bevel protractor

D

Vernier height gauge

Question 105 1 Marks

Calculate the change gears to cut a worm of 0.35" lead on a lathe with a lead screw of 4TPI?

A

Driver 30T, Driven 40

B

Driver 40T, Driven 50

C

Driver 50T, Driven 30

D

Driver 70T, Driven 50

Question 106 1 Marks

What is the angle of ACME thread

A

29 Degree

B

45 Degree

C

55 Degree

D

60 Degree

Question 107 1 Marks

Which type of centre is used in the end of the job if no counter sink hole is permitted?

A

Insert type centre

B

Revolving centre

C

Female centre

D

Ball centre

Question 108 1 Marks

Calculate the change gear (driver gear) if driven gear has 120 teeth to cut 3mm pitch on a job using lathe having 6 mm pitch lead screw?

A

50

B

60

C

100

D

150

Question 109 1 Marks

What is the depth of ACME thread of 1inch major diameter 6TPI?

A

0.08

B

0.082

C

0.084

D

0.09

Question 110 1 Marks

What is the angle of saw tooth thread?

A

29 Degree

B

30 Degree

C

45 Degree

D

90 Degree

Question 111 1 Marks

Which thread is recommended for pipe and
pipe fittings?

A

BSW thread

B

BSF thread

C

BSP thread

D

BA thread

Question 112 1 Marks

Which device uses buttress thread?

A

Screw jack

B

Lead screw of lathe

C

Carpentry vice

D

General purpose nut and bolt

Question 113 1 Marks

Which one is the disadvantage of using tail stock offset method?

A

Only hand feed can be given

B

External threads on taper can't produce

C

Taper length is limited

D

Taper turning is possible when work held between centre only

Question 114 1 Marks

Calculate the width of flat of buttress thread 6 mm pitch?

A

0.75 mm

B

1 mm

C

1.5 mm

D

2 mm

Question 115 1 Marks

Which method is preferred for producing small length taper with least accuracy?

A

Form tool method

B

Compound slide method

C

Tail stock offset method

D

Taper turning attachment method

Question 116 1 Marks

Which part is pivoted to the disc of vernier bevel protractor?

A

Disc

B

Stock

C

Dial

D

Blade

Question 117 1 Marks

Which type of thread is used in screw jack spindle?

A

BSW thread

B

BSF thread

C

Square thread

D

Worm thread

Question 118 1 Marks

Which method of thread forming produce threads on non-metals?

A

Thread casting

B

Thread milling

C

Thread rolling

D

Thread grinding

Question 119 1 Marks

What is protected by providing pieces between work and carrier while clamping?

A

Carrier

B

Live centre

C

Job surface

D

Dead centre

Question 120 1 Marks

Which is used to support hollows end jobs?

A

Ball centre

B

Pipe centre

C

Female centre

D

Tipped centre

Question 121 1 Marks

What is the relationship between pitch and depth of a square thread?

A

Depth is 1/4 pitch

B

Depth is 1/2 pitch

C

Depth is 3/4 pitch

D

Depth is equal to pitch

Question 122 1 Marks

What is the schedule of lubrication for
lathe bed?

A

Daily

B

Weekly

C

Monthly

D

Frequently

Question 123 1 Marks

What is the name of chuck that hardend steel sleeve having slits cut partly?

A

Combination chuck

B

Collect chuck

C

Magnetic chuck

D

Hydrolic chuck

Question 124 1 Marks

Which is the smallest unit of angular measurement?

A

Radian

B

Degree

C

Minutes

D

Seconds

Question 125 1 Marks

What is the accuracy of the protractor head
of a combination set?

A

1 Degree

B

5 Degree

C

1 Degree

D

1 Degree

Question 126 1 Marks

How can measure the minor diameter of a
internal thread?

A

By vernier caliper

B

By screw thread micrometer

C

By three wire method

D

Using slip gauge pack

Question 127 1 Marks

Find the gears for simple gear train, if pitch
of lead screw is 6 mm and pitch of thread to be cut
is 2 mm?

A

30/120

B

50/120

C

40/120

D

40/150

Question 128 1 Marks

Which mechanism is used for converting
linear motion into rotary motion in plunger dial
gauge?

A

Rack and scroll mechanism

B

Scroll and pinion mechanism

C

Rack and pinion mechanism

D

Lever and scroll mechanism

Question 129 1 Marks

Which method of holding is used for lengthy work to avoid over hanging?

A

In between centres

B

In four jaw chuck

C

In face plate

D

Angle plate

Question 130 1 Marks

What is the tool life index of cemented carbide tool for turning high carbon steel?

A

0.15

B

0.2

C

0.4

D

0.35

Question 131 1 Marks

What is the purpose of the beveled edges of
the rule in a vernier bevel protractor?

A

Checking squreness

B

Checking flatness

C

Checking 45 Degree and 60 Degree

D

Checking parallelism

Question 132 1 Marks

What is the shape of interchangeable anvils used in screw thread micrometer?

A

Square shape

B

V-shape

C

Circular shape

D

Radius shape

Question 133 1 Marks

Calculate the change gear ratio to cut a thread of 7/16" lead on a lathe with lead screw of 4 TPI?

A

04-Jul

B

07-Apr

C

03-Apr

D

03-Jul

Question 134 1 Marks

Which is the commonly used method to produce thread in nut?

A

Tapping

B

Thread grinding

C

Thread casting

D

Thread milling

Question 135 1 Marks

Which angle is provided on the metric screw thread micrometer anvil?

A

60 Degree

B

47.5 Degree

C

55 Degree

D

30 Degree

Question 136 1 Marks

What is the only thread form cut using diehead is turret lathe?

A

Square

B

ACME

C

V-Thread

D

Saw - Tooth

Question 137 1 Marks

Calculate the driven gear required to cut 4mm pitch thread is a lathe having lead screw of 4mm with driven gear of 60 teeth?

A

50

B

60

C

100

D

120

Question 138 1 Marks

What is the angle of a BIS metric thread?

A

27.5 Degree

B

45 Degree

C

55 Degree

D

60 Degree

Question 139 1 Marks

What should be the heights of gauge block to be built to check the work angle of 30 Degree using 150 mm sine bar?

A

291.26

B

145.63

C

75

D

38.62

Question 140 1 Marks

How many number of teeth in translating gear used for cutting metric thread on British lathe?

A

63

B

30

C

120

D

100

Question 141 1 Marks

Which part of the lathe is locked while the form tool method is used for turning taper?

A

Compound rest

B

Carriage

C

Tail stock

D

Head stock

Question 142 1 Marks

Which is the angle of inclination in the thread to the imaginary perpendicular line?

A

Acute angle

B

Right angle

C

Helix angle

D

Obtuse angle

Question 143 1 Marks

Which formula is used to find depth of buttress thread?

A

0.5 x pitch

B

0.6134 x pitch

C

0.6403 x pitch

D

0.75 x pitch

Question 144 1 Marks

What does BIS stand for?

A

Bureau of international standard

B

Bureau of Indian standard

C

Bureau of international society

D

Bureau of Indian society

Question 145 1 Marks

Why the ball centre is preferred in tail stock offset method?

A

For good surface finish

B

For accurate setting

C

For provide power feed

D

To avoid damage to the centre drilled hole of the job

Question 146 1 Marks

What is the width of the tool to cut a square thread of 60 x 9 mm pitch?

A

4.5 mm

B

9.5 mm

C

9 mm

D

8.5 mm

Question 147 1 Marks

How many un-numbered divisions on the British chasing dial?

A

3

B

4

C

12

D

18

Question 148 1 Marks

Which is the chip less method of thread production?

A

Die head

B

Thread rolling

C

Thread milling

D

Thread grinding

Question 149 1 Marks

Which carrier with V-groove provided and used to hold small diameter and square sections?

A

Bent tail

B

Clamp type

C

Straight tail

D

Safety clamp type

Question 150 1 Marks

What is the core dia of square thread 62 x 10 mm pitch?

A

52.7 mm

B

52 mm

C

57.4 mm

D

56.45 mm

Question 151 1 Marks

How is the vernier height gauge generally specified?

A

Width of beam

B

Height of beam

C

Thickness of beam

D

Size of base

Question 152 1 Marks

How many teeth are in translating gear for cutting metric thread on British lathe?

A

122

B

125

C

127

D

129

Question 153 1 Marks

Which method is non metallic threads are produced?

A

Thread milling

B

Thread casting

C

Thread grinding

D

Thread chasing

Question 154 1 Marks

What type of thread can be produced by a die?

A

Internal V - thread

B

External V - thread

C

Internal square thread

D

External square thread

Question 155 1 Marks

Which is the advantage of taper turning by compound slide method?

A

Steep taper can be produced

B

Long taper can be produced

C

Thread on taper portion can be produced

D

Most suitable for duplicate taper work

Question 156 1 Marks

What is the effect of reversing the machine with out disengaging the half nut in thread cutting?

A

For avoid catching the thread in each cut

B

For improve the productivity

C

Reduce the wear and tear of half nut

D

For the use of chasing dial

Question 157 1 Marks

What is the purpose of tail on the lathe carrier?

A

Give good finish

B

Protect the work

C

Protect the operator

D

Locate and drive the work

Question 158 1 Marks

What is the thread depth of square thread SQ60x9?

A

4.5 mm

B

9.0 mm

C

18 mm

D

42 mm

Question 159 1 Marks

Which formula is to find crest width of ACME thread?

A

0.317 x pitch

B

0.335 x pitch

C

0.5 x pitch

D

0.75 x pitch

Question 160 1 Marks

Calculate the depth of buttress thread 60 mm diameter of 9 mm pitch?

A

4.75 mm

B

5.75 mm

C

6.75 mm

D

7.75 mm

Question 161 1 Marks

Find the gear required to cut 3 mm pitch in a lathe having a lead screw of 6 TPI gear available from 20 to 120 teeth by 5 teeth with a special gear of 127 teeth?

A

Driver 90 teeth Driven 127 teeth

B

Driver 60 teeth Driven 20 teeth

C

Driver 127 teeth Driven 90 teeth

D

Driver 20 teeth Driven 60 teeth

Question 162 1 Marks

What is the depth of buttress thread if the
pitch is 1.8 mm of 45 Degree angle?

A

0.42 mm

B

0.910 mm

C

1.23 mm

D

1.35 mm

Question 163 1 Marks

How much the compound rest should be tilted for cutting metric thread by compound rest?

A

15 Degree

B

30 Degree

C

45 Degree

D

60 Degree

Question 164 1 Marks

How much times the spindle rotate the lead screw to cut 3 mm pitch thread in a 12 mm pitch lead screw?

A

4 times

B

5 times

C

6 times

D

3 times

Question 165 1 Marks

What term indicate actual size of the
abrasive grain?

A

Structure

B

Grit size

C

Grade of bond

D

Abrassive type

Question 166 1 Marks

What is the formula to find out core diameter of external thread by using prisms and micrometer?

A

Core dia = Measurement over prisms ? Height of prisms ? Single depth of thread

B

Core dia = Measurement over prisms ? Height of prisms + Two depth

C

Core dia = Measurement over prisms + Height of prisms ? Single depth

D

Core dia = Measurement over prisms ? Height of prisms + Single depth

Question 167 1 Marks

Where the milling attachment is mounted in centre lathe?

A

Cross - slide

B

Compound rest

C

Tailstock

D

Rear tool post

Question 168 1 Marks

What is the gear ratio if the lathe constant value is
one?

A

One

B

Two

C

Three

D

Six

Question 169 1 Marks

What is the type of fit in expression 75 H8/j7?

A

Transition fit

B

Clearance fit

C

Interference fit

D

Force fit

Question 170 1 Marks

Where multistart threads are used?

A

For easy alignment

B

For quick transmission

C

For easy engagement

D

For general fastening

Question 171 1 Marks

Calculate the spindle speed to turn a 40mm dia M.S rod
using a cemented carbide tool it cutting speed is
92mm/min?

A

508 rpm

B

685 rpm

C

731 rpm

D

950 rpm

Question 172 1 Marks

Which type of chisel is used for squaring materials at the corners and joints?

A

Web chisel

B

Flat chisel

C

Cross cut chisel

D

Diamond point chisel

Question 173 1 Marks

What is the purpose of square slot provided on the top of the pinion of a 3 jaw chuck is?

A

To set chuck on machine

B

To set the back plate on the machine

C

To accommodate the chuck key

D

To set the body of the chuck in spindle

Question 174 1 Marks

What is the representation of zero line in limit and fits?

A

Basic size

B

Actual size

C

Nominal size

D

Tolerance size

Question 175 1 Marks

Which one of the below accessory has provided U slot?

A

Face plate

B

Angle plate

C

Catch plate

D

Driving plate

Question 176 1 Marks

What is the formula for metric thread depth?

A

0.5 x pitch

B

0.6134 x pitch

C

0.6403 x pitch

D

0.75 x pitch

Question 177 1 Marks

What is the body material of bench vice?

A

Cast iron

B

Mild steel

C

Wrought iron

D

Hardened steel

Question 178 1 Marks

Where the taper threads are used?

A

Bolt

B

Wood screw

C

Stud

D

Nut

Question 179 1 Marks

What is the swing over bed?

A

Perpendicular distance from lathe and to the carriage

B

Perpendicular distance from lathe axis to top of bed

C

Distance between centres

D

Length of the bed

Question 180 1 Marks

What is the formula used to find flat width of a buttress thread?

A

Pitch/2

B

Pitch/3

C

Pitch/4

D

Pitch/8

Question 181 1 Marks

Which lathe part is used to mount the dial indicator for
truing the bore?

A

Tail stock

B

Cross side

C

Tool post

D

Lathe bed

Question 182 1 Marks

Which device is used as a reference surface for
marking?

A

Plate angle

B

Marking table

C

Anvil surface

D

Lathe bed

Question 183 1 Marks

Which is the advantage of CNC machine over
conventional machines?

A

High cutting speed

B

Feed back control

C

High feed

D

Mass production

Question 184 1 Marks

What is the name of gauge used to check the radius

A

Radius gauge

B

Fillet gauge

C

Plug gauge

D

Feeler gauge

Question 185 1 Marks

Which type of jig is used to hold thin and soft parts?

A

Plat jig

B

Channel jig

C

Sandwich jig

D

Trunnion jig

Question 186 1 Marks

What are the standard diameters of tool maker's button?

A

2mm, 4mm, 6mm

B

8mm, 10mm, 12mm

C

14mm, 16mm, 18mm

D

20mm, 22mm, 24mm

Question 187 1 Marks

Which one of the following code is suitable for rapid
traverse?

A

G00

B

G02

C

G03

D

G04

Question 188 1 Marks

Which of the following abrasive is preferred for lapping soft steels and non-ferrous metal?

A

Silicon carbide

B

Natural corundum

C

Aluminium oxide

D

Boron carbide

Question 189 1 Marks

Which one of the following command the G02 code
indicates?

A

Linear interpolation

B

Circular interpolation clockwise direction

C

Circular interpolation counter clockwise direction

D

Cross sectional interpolation

Question 190 1 Marks

Which of the following is not advantage of CNC
machine?

A

Higher flexibility

B

Improved quality

C

Reduced scrap rate

D

Improved strength of the components

Question 191 1 Marks

Which type of jig locates the piece part from its face?

A

Plate jig

B

Post jig

C

Table jig

D

Solid jig

Question 192 1 Marks

What is the unit of deviation in limits and fits?

A

Millimeter

B

Centimeter

C

Micron

D

Mill micron

Question 193 1 Marks

Which one of the following M-code is suitable for
coolant pump ON?

A

M10

B

M11

C

M09

D

M08

Question 194 1 Marks

Which work holding device is used to hold irregular shaped work?

A

4 Jaw chuck

B

3 Jaw chuck

C

Face Plate

D

Catch plate

Question 195 1 Marks

Which is 3 jaw chuck?

A

4 Jaw chuck

B

Magnetic chuck

C

Combination chuck

D

Self centring chuck

Question 196 1 Marks

What is the value of tool life index for a cemented
carbide tip to machine cast iron component?

A

0.1

B

0.125

C

0.2

D

0.128

Question 197 1 Marks

Which is the device that can hold, locate and guide the
tool?

A

Jig

B

Fixture

C

Chuck

D

Collet chuck

Question 198 1 Marks

What is the purpose of back gear unit in cone pulley headstock of a lathe?

A

For helping step turning

B

To double the spindle speed

C

To get increased spindle speed

D

To get reduced spindle speed

Question 199 1 Marks

What is the most accepted method of representing
roughness?

A

Grade number

B

Symbol

C

Units

D

Weight

Question 200 1 Marks

What is the depth of 0.5 inch BSW 13TPI single start thread?

A

0.025"

B

0.038"

C

0.049"

D

0.082"

Question 201 1 Marks

What is the purpose of G28 code based on FANUC
CNC control system?

A

Tool has return to reference point

B

Tool has to return from reference point

C

Circular interpolation clockwise

D

Circular interpolation counter clockwise

Question 202 1 Marks

Which gauge is used to check the radius formed at the
steps of component?

A

Fillet gauge

B

Radius gauge

C

Feeler gauge

D

Plug gauge

Question 203 1 Marks

What is the purpose of slots milled on two planes of
angle plate?

A

Reduce the weight

B

Clamp the job

C

Maintain accuracy

D

Good appreance

Question 204 1 Marks

What is the activity of code M06 based on FANUC
CNC control system?

A

End of the program with rewind

B

Spindle rotation in counter clockwise direction

C

The cutting tool has to be changed

D

Switch of the coolant pump

Question 205 1 Marks

What is the maximum size of bore that can be checked
with telescopic gauge?

A

152.4 mm

B

88.9 mm

C

53.9 mm

D

31.7 mm

Question 206 1 Marks

What is the special benefit of using a fixture?

A

Slower rate of production

B

Skilled worker required

C

Faster rate of production

D

Suitable for small bach production

Question 207 1 Marks

What is the correct sequence of the operation of a simple fire extinguisher?

A

Pull, Aim squeeze & sweep

B

Aim pull sweep and squeeze

C

Squeeze aim pull and sweep

D

Sweep Aim pull and squeeze

Question 208 1 Marks

Which one is the cause for hazard in personal safety?

A

Long hair

B

Safety boots

C

Buttons fastened

D

Sleeve tightly rolled

Question 209 1 Marks

Which mode, the cutting tool returns back to its home
position?

A

Automatic mode

B

MDI mode

C

Jog mode

D

Reference mode

Question 210 1 Marks

What type of thread is used in screw jack machine?

A

Acme thread

B

Square thread

C

Buttress thread

D

V-thread

Question 211 1 Marks

Which mode is used to edit the program?

A

Jog mode

B

Edit mode

C

MDI mode

D

Auto mode

Question 212 1 Marks

What is the least count of inside micrometer - metric?

A

0.1 mm

B

0.01 mm

C

0.001 mm

D

0.02 mm

Question 213 1 Marks

Which gauge is used to position the cutter before
cutting in milling fixture?

A

Feeler gauge

B

Radius gauge

C

Fillet gauge

D

Screw pitch gauge

Question 214 1 Marks

Where will be using the angle plate and counter weight?

A

Face plate

B

Catch plate

C

Driving plate

D

Four jaw chuck

Question 215 1 Marks

Which lapping material used for easy charging and
rapid cutting?

A

Cast iron

B

Copper and brass

C

Close grained iron

D

White cast iron

Question 216 1 Marks

What is the purpose of Square thread?

A

To transmit power

B

To make adjustment

C

General fastening

D

For clamping

Question 217 1 Marks

How the complex cutting motion involving X,Y and Z moments is carried out by CNC machining?

A

Use of jigs, cams, templates and tracers

B

Skill of machine operator

C

Combinations of co ordinates obtained from drives along the axis

D

Based on electrical power supply of the machine

Question 218 1 Marks

How many numbers of gears having in a simple gear train?

A

2

B

3

C

4

D

5

Question 219 1 Marks

Encodor is used in CNC machine tool to sense and
control?

A

Spindle speed

B

Spindle position

C

Table position

D

Work position

Question 220 1 Marks

What is the roughness value of grade No N:12?

A

50 microns

B

25 microns

C

12.5 microns

D

0.1 microns

Question 221 1 Marks

Which is the cheapest tool material?

A

High carbon steel

B

High speed steel

C

Carbide

D

Diamonds

Question 222 1 Marks

What is the use of maintenance records?

A

To analyse the purchase

B

To analyse the periodic inspection

C

To analyse the cause fault and rectification

D

To analyse the function maintenance department

Question 223 1 Marks

Which one is the golden hours related to first aid?

A

First 15 minutes

B

First 20 minutes

C

First 30 minutes

D

First 45 minutes

Question 224 1 Marks

Which axis the tool moves in taper turning attachment?

A

Perpendicular to lathe axis

B

Parallel to lathe axis

C

Angular to lathe axis

D

Vertical to lathe axis

Question 225 1 Marks

Which part of carriage is only for possible manual operation?

A

Apron

B

Saddle

C

Top slide

D

Cross slide

Question 226 1 Marks

Which formula to be used to find depth of buttress thread?

A

0.5 x pitch

B

0.6134 x pitch

C

0.6403 x pitch

D

0.75 x pitch

Question 227 1 Marks

Which is the blank size M10 x1.5mm of external thread?

A

10.85mm

B

9.85mm

C

9.75mm

D

9.65mm

Question 228 1 Marks

Find out the R.P.M of spindle for a 50mm bar (D) and
cutting speed is 25m/min.

A

100rpm

B

159rpm

C

168rpm

D

250rpm

Question 229 1 Marks

Which file is used for filing surfaces at right angle on already finished surface?

A

Flat file

B

Needle file

C

Safe edge file

D

Curved cut file

Question 230 1 Marks

What is lapping?

A

Precision finishing operation

B

Filing operation

C

Grinding operation

D

Chiseling operation

Question 231 1 Marks

Which one of the following is disadvantage of tailstock offset method?

A

Power feed can be given

B

Good surface finish can be obtained

C

External taper thread can be produce

D

Only external taper can be turned

Question 232 1 Marks

What is the cut of file used for deburring the job on lathe?

A

Rasp cut file

B

Double cut file

C

Curved cut file

D

Single cut file

Question 233 1 Marks

What is the use of CNC code of M05 to develop the command?

A

The spindle rotation has to stop

B

The cutting tool has to be changed

C

Tool returns from reference point to work place

D

Rewind the program once again

Question 234 1 Marks

How the cutting speed is expressed?

A

Foot/min

B

Meter/sec

C

Meter/min

D

Revoluation/min

Question 235 1 Marks

What is the width of the tool to cut a square thread of 60 x 9 mm pitch?

A

4.5 mm

B

9.5 mm

C

9 mm

D

8.5 mm

Question 236 1 Marks

Which lap material inexpensive and can be expanded
if worn out?

A

Brass

B

Cast Iron

C

Lead

D

Bronze

Question 237 1 Marks

Why heat treatment of metal is necessary?

A

To produce certain desired properties

B

To make good appearance on the component

C

To increase strength of the metal

D

To make the metal rust-proof

Question 238 1 Marks

How many ways CNC machine tool systems can be
classified?

A

2

B

3

C

4

D

5

Question 239 1 Marks

Which mode is used while loading / unloading the
work piece in CNC machine?

A

Simulation mode

B

Automatic mode

C

Jog mode

D

Edit mode

Question 240 1 Marks

Calculate the depth of buttress thread 60 mm diameter and 9 mm pitch?

A

4.75 mm

B

5.75 mm

C

6.75 mm

D

7.75 mm

Question 241 1 Marks

Which one is the angle of buttress thread?

A

30 Degree

B

45 Degree

C

55 Degree

D

60 Degree

Question 242 1 Marks

What is the full form of MDI?

A

Mechanical Data Implantation

B

Manually Data Input

C

Moderated Data input

D

Mounting of Diagonal Impact

Question 243 1 Marks

What factor is important in free hand form turning?

A

Unskilled labour

B

Skilled labour

C

Sharp tool

D

High speed

Question 244 1 Marks

What is direction of finishing in surface texture?

A

Flaw

B

Lay

C

Waviness

D

Roughness

Question 245 1 Marks

What is the nose cutter width of the square threads tool?

A

0.5 x Pitch

B

equal to pitch

C

Pitch / 0.5

D

2 x Pitch

Question 246 1 Marks

How many fundamental deviations are recommended by BIS?

A

25

B

24

C

20

D

30

Question 247 1 Marks

What is the relation between pitch and lead in multistart thread?

A

Lead = No. start x pitch

B

Lead = Pitch

C

Lead = 1/2 pitch

D

Lead = 1/3 x pitch

Question 248 1 Marks

Which letter represents basic hole?

A

h

B

H

C

Bh

D

BH

Question 249 1 Marks

Which one of the following code is used for tool nose
compansation at left side?

A

G40

B

G41

C

G42

D

G32

Question 250 1 Marks

Which work holding method is to be used if, high degree of concentricity is needed?

A

Face plate

B

Four jaw chuck

C

Three jaw chuck

D

In between centres

Question 251 1 Marks

Which victim has given CPR immediately?

A

Difficulty in breathing

B

Severe head injury

C

Severe blood loss

D

Dehydration

Question 252 1 Marks

How many types of split bearing?

A

4

B

3

C

5

D

2

Question 253 1 Marks

Which heat process is increase the toughness and decrease the brittleness?

A

Annealing

B

Normalizing

C

Tempering

D

Case hardening

Question 254 1 Marks

Which lathe accessory is used to clamp the fixture?

A

3 jaw chuck

B

4 jaw chuck

C

Face plate

D

Collet chuck

Question 255 1 Marks

What is the name of the centre with a carbide tip is brazed into an ordinary steel shank?

A

Ball centre

B

Half centre

C

Tipped centre

D

Insert type centre

Question 256 1 Marks

What is the form of NO GO anvil of calliper gauge with
roller type?

A

Half thread form

B

Full thread form

C

Correct shaped form

D

Truncated shaped form

Question 257 1 Marks

Which G-code is suitable for data input in mm?

A

G21

B

G27

C

G20

D

G28

Question 258 1 Marks

What will happen if lap material used to make laps
harder than work piece?

A

Improve better geometrical accuracy

B

Abrasives cut the lap instead of work piece

C

Improve dimensional accuracy

D

Refines surface finish

Question 259 1 Marks

What is the standard colour code used for identifying the bin for the metal waste material?

A

Red

B

Blue

C

Green

D

Violet

Question 260 1 Marks

Where is the dead centre fixed on lathe?

A

Carriage

B

Tail stock

C

Head stock

D

Cross-Stock

Question 261 1 Marks

What is the name of last member in a simple gear
train?

A

Driver

B

Idler

C

Driven

D

Reversing gear

Question 262 1 Marks

What is the formula for pitch diameter of thread?

A

Major diameters - single depth

B

Major diameters - 2 depth

C

Major diameters - minor diameter

D

Major diameter - Pitch

Question 263 1 Marks

How the turning tool is moving in tail strock offset method?

A

Perpendicular to lathe axis

B

Angular to lathe axis

C

Parallel to lathe axis

D

Vertical to lathe axis

Question 264 1 Marks

What is the term of thread the advancement of
mating part in one complete rotation?

A

Pitch

B

Depth

C

Helix angle

D

Lead

Question 265 1 Marks

What is the material of jaws of 3 jaw chuck?

A

Cast iron

B

Alloy steel

C

High carbon steel

D

Medium carbon steel

Question 266 1 Marks

Which one of the following is disadvantages of taper turning by attachments?

A

Both external and internal tapers can be produced

B

Power feed can be produced

C

Length taper can be produced

D

Only limited taper angle can be turned

Question 267 1 Marks

Calculate the length of metal passing by cutting tool in
one revolution if the diameter of work is 75mm and
cutting speed is 120m/min.

A

235.5 mm

B

295.7 mm

C

365.3 mm

D

485.7 mm

Question 268 1 Marks

What is the angle between the adjustable jaws of a three jaw chuck?

A

90 Degree

B

118 Degree

C

119 Degree

D

120 Degree

Question 269 1 Marks

What is the effect, if the cutting speed is more than the
recommanded?

A

Reduce the tool life

B

Better finish

C

Accurate dimension

D

Normal tool life

Question 270 1 Marks

Which code is suitable for multiple turning cycle in
FANUC CNC control system?

A

G71

B

G92

C

G96

D

G94

Question 271 1 Marks

Which cutting tools have highest cutting efficiency?

A

Mild steel

B

High carbon steel

C

High speed steel

D

Carbide

Question 272 1 Marks

Which mode is used to move the turret in micron
level?

A

Auto mode

B

Jog mode

C

MDI mode

D

Incremental jog mode

Question 273 1 Marks

Which part of lathe slides over the bedways between headstock and the tailstock?

A

Lead screw

B

Feed rod

C

Carriage

D

Spindle

Question 274 1 Marks

Which one is used for producing a bore to a high degree of
positional accuracy?

A

Reamer

B

Drill

C

Boring tool

D

Tool maker's button

Question 275 1 Marks

Which one of the following is the solid carburizing material?

A

Charcoal

B

Petrol

C

Ammonia

D

Kerosene

Question 276 1 Marks

Which grade of file is used for heavy reduction of material?

A

Smooth file

B

Bastard file

C

Second cut file

D

Dead smooth file

Question 277 1 Marks

Calculated the rpm of spindle if cutting speed ?V? is
120m/min and the diameter ?D? of the job is 50 mm?

A

500 rpm

B

764 rpm

C

856 rpm

D

975 rpm

Question 278 1 Marks

What does M20 stands for?

A

Metric thread 20 mm diameter

B

Metric thread 20 mm length

C

Metric thread 20 mm pitch

D

Metric thread 20 mm lead

Question 279 1 Marks

What is the use of drive pin in drive plate?

A

Hold the job

B

To rotate the job

C

To turn the job

D

To locate the job

Question 280 1 Marks

What is the advantage of follower steady rest over fixed steady rest?

A

Support at fixed place of work

B

Support continuous entire length of work

C

It rotate with the work

D

It rotate and moves along the work

Question 281 1 Marks

Where the knuckle threads are used?

A

Screw jack

B

Carpentry vice

C

Railway carriage couplings

D

Dead screw of lathe

Question 282 1 Marks

What does the letter Y stands in the formula d = Y ?
2 (s+r) in taper measurement?

A

Diameter over rollers at small end

B

Diameter over rollers at big end

C

Radius of the roller

D

Distance from the centre of the roller to the end of the component

Question 283 1 Marks

Which accessory is used in between centre work?

A

Face plate

B

Catch plate

C

Three chuck

D

Four jaw chuck

Question 284 1 Marks

How many number of teeth gear is used to as translating gear to cut metric thread on British lathe?

A

100

B

127

C

140

D

135

Question 285 1 Marks

How may roughness grade number are used?

A

N1 to N12

B

N1 to N25

C

N1 to N20

D

N1 to N30

Question 286 1 Marks

Which gas is used in nitriding process?

A

Ammonia

B

Helium

C

Carbon dioxide

D

Hydrogen

Question 287 1 Marks

What is the purpose of MDI mode?

A

For program execution

B

Move the axes by manually

C

Cross checking of the program graphically

D

Editing of programmable Data

Question 288 1 Marks

What are the possible surface that can be produced by
form turning?

A

To generating concave and convex profile

B

To generating cylindrical surface

C

To generate conical surface

D

To generate flat surface

Question 289 1 Marks

What is the term the distance moved by the tool along
the work for each revolution?

A

Speed

B

Feed

C

Cutting speed

D

Depth

Question 290 1 Marks

What is the recommended cutting speed for turning mild steel using H.S.S tool?

A

25-40 m/min

B

35-70 m/min

C

40-70 m/min

D

35-50 m/min

Question 291 1 Marks

Which type of thread cut on the screw shaft of an independent chuck?

A

Left hand V thread

B

Right hand V thread

C

Left hand square

D

Left hand acme thread

Question 292 1 Marks

Which material used for manufacturing a marking
table?

A

Cast iron

B

Aluminium

C

Tool steel

D

Mild steel

Question 293 1 Marks

Which one is chief constituent of ferrous tool material?

A

Iron

B

Tungsten

C

Vanadium

D

Carbon

Question 294 1 Marks

What does BIS stands for?

A

Bureau of International Standard

B

Bureau of Indian Standard

C

Bureau of International Society

D

Bereau of Indian Society

Question 295 1 Marks

A CNC machine tool has a continuous part control
both linear and circular along x,y,z and control of
table rotation about x axis and z axis, so the machine
should be called?

A

2C, L

B

3L,2C

C

5C

D

2L, 2C

Question 296 1 Marks

What does AQL stands for?

A

Aquired quality limit

B

Acceptance quality limit

C

Another quality limit

D

Acceptance quality level

Question 297 1 Marks

How many speed will obtained from a 3 stepped cone pulley headstock of lathe with back gear arrangement?

A

3

B

4

C

5

D

6

Question 298 1 Marks

What is the disadvantage of fixed steady rest over follower
steady rest?

A

Support at one fixed place only

B

Support continuous entire length

C

It rotate with the job

D

It rotate and moves along the work

Question 299 1 Marks

What is the use of gap bed lathe?

A

To turn larger diameter work

B

To turn small diameter work

C

To turn irregular shaped work

D

To turn lengthy work

Question 300 1 Marks

What is the types of fit for the expression 20H7/g6?

A

Interference fit

B

Clearance fit

C

Trasition fit

D

Force fit

Question 301 1 Marks

Which material is used to make the tool maker's button?

A

Hardened steel

B

Tool steel

C

Cast steel

D

Stainless steel

Question 302 1 Marks

What is the preheating temperature of steel?

A

Upto 400 Degree Centigrade

B

Upto 500 Degree Centigrade

C

Upto 600 Degree Centigrade

D

Upto 300 Degree Centigrade

Question 303 1 Marks

In Which case hardening process the ammonia gas is introduced?

A

Cyaniding

B

Gas nitriding

C

Carburizing

D

Induction hardening

Question 304 1 Marks

What is the meaning of M24 in M 24 x 3 single start thread?

A

Core dia of thread

B

Major dia of thread

C

Effective dia of thread

D

Depth of thread

Question 305 1 Marks

Where the follower is fixed to produce from turning?

A

Tool part

B

Top slide

C

Cross slide

D

Tail stook

Question 306 1 Marks

Which mode is used for five positioning (Micron level)
of the axis movement?

A

Auto mode

B

Incremental Jog mode

C

MDI mode

D

Edit mode

Question 307 1 Marks

What is 'L' in tailstock offset method?

A

Length of the taper

B

Length of the job

C

Amount taper

D

Length of offset

Question 308 1 Marks

What is the indication of 'z' axis in CNC lathe
machine?

A

The length of the component

B

The centre axis of the component

C

The radius of the component

D

The diameter of the component

Question 309 1 Marks

What is the recommended cutting speed for aluminium using H.S.S tool?

A

70 m/min - 100 m/min

B

50 m/min - 80 m/min

C

35 m/min - 50 m/min

D

25 m/min - 40 m/min

Question 310 1 Marks

What is the expanded form of ABC in first aid?

A

Airway, blood and circulation

B

Aspiration, blood and circulation

C

Airway, breathing and circulation

D

Aspiration, breathing and circulation

Question 311 1 Marks

Which type of thread have higher mechanical advantage?

A

V- thread

B

Acme thread

C

Square thread

D

Buttress thread

Question 312 1 Marks

What is the lead of M 10 x 1.5 double start thread?

A

2 mm

B

3 mm

C

3.5 mm

D

4 mm

Question 313 1 Marks

What is angle between the two faces of angle plate?

A

30 Degree

B

45 Degree

C

60 Degree

D

90 Degree

Question 314 1 Marks

Calculate pitch diameter of M16 x 2 mm square thread?

A

14 mm

B

15 mm

C

15.5 mm

D

16 mm

Question 315 1 Marks

Which one of the below is a work holding device?

A

Catch plate

B

Face plate

C

Driving plate

D

Four jaw chuck

Question 316 1 Marks

How much percentage of cutting speed could be
increased by using super HSS tools?

A

5% to 10%

B

10% to 15%

C

15% to 20%

D

20% to 25%

Question 317 1 Marks

What is the heating temperature in gas nitriding process?

A

Up 200 Degree Celsius

B

Up 300 Degree Celsius

C

Up 400 Degree Celsius

D

Up 500 Degree Celsius

Question 318 1 Marks

What is the use of roller steady rest?

A

To support the job and travel along job

B

To support long slender work

C

To support long thin and thick rod

D

To support irregular job

Question 319 1 Marks

What is an accuracy of an independent four chuck in metric system?

A

0.001mm

B

0.002mm

C

0.01mm

D

0.02mm

Question 320 1 Marks

How many adjusting bearing pad in fixed steady rest?

A

Two

B

Three

C

Four

D

Five

Question 321 1 Marks

Calculate the minor diameter of M 20 x 2.5 pitch thread?

A

15.933

B

16.933

C

17.933

D

18.933

Question 322 1 Marks

Which one of the following is possible in edit mode?

A

Can read only the program

B

Simulation of the program

C

Execute the program

D

Preparation of new programmable Data and correction / Alteration of an earlier program

Question 323 1 Marks

Which tool is used for cutting internal thread?

A

Die

B

Tap

C

Drill

D

Reamer

Question 324 1 Marks

Which work holding device of lathe is require to balance for irregular job?

A

Face plate

B

Catch plate

C

3 Jaw chuck

D

Four Jaw chuck

Question 325 1 Marks

Which is used to prevent concentration of abrasives on lapping surface?

A

Vehicle

B

Holder

C

Absorber

D

Retainer

Question 326 1 Marks

What is the inclined angle of dead centre conical point?

A

90 Degree

B

60 Degree

C

50 Degree

D

30 Degree

Question 327 1 Marks

Which type of angle plate is used to hold work at an
angle?

A

Solid

B

Slotted

C

Swivel

D

Box

Question 328 1 Marks

What is the minimum size of bore that can be checked with
telescopic gauge?

A

12.7 mm

B

13.7 mm

C

19.00 mm

D

31.7 mm

Question 329 1 Marks

How many standard wires are used to check effective
diameter very accurately?

A

One wire

B

Two wire

C

Three wire

D

Four wire

Question 330 1 Marks

Which part of screw rod of 4 jaw chuck permits the screws to rotate but not to advance?

A

Pinion

B

Finger pin

C

Taper pin

D

Locating pin

Question 331 1 Marks

Calculate the flat width of 10 mm pitch buttress
thread?

A

1.25 mm

B

2.25 mm

C

3.25 mm

D

4.25 mm

Question 332 1 Marks

What is the name of work holding device were the
irregular work could hold in lathe?

A

Face plate

B

Catch plate

C

B-Jaw chuck

D

Driving place

Question 333 1 Marks

Which material is to used to make body of three jaw chuck?

A

Cast iron

B

Cast steel

C

Alloy steel

D

Hardened steel

Question 334 1 Marks

Which is four jaw chuck?

A

Self centring chuck

B

Independent chuck

C

Self aligning chuck

D

Collect chuck

Question 335 1 Marks

What is the advantage of jig?

A

It holds the job

B

Hold and locate the work

C

Hold, locate and guide the tool

D

Cost is very low

Question 336 1 Marks

What is the angle of BSW thread?

A

60 Degree

B

55 Degree

C

29 Degree

D

45 Degree

Question 337 1 Marks

What is the included angle of acme thread?

A

55 Degree

B

45 Degree

C

30 Degree

D

29 Degree

Question 338 1 Marks

What do you mean by MPG?

A

Manual Program Graphics

B

Manually Pulse Generator

C

Manual Procedure to Calculate Geometrical Values

D

Manually Procure the Digital Graphics

Question 339 1 Marks

What is the purpose of lapping vehicles?

A

Regulate cutting action and lubricate surface

B

Smooth effective operation

C

Improves dimensional accuracy

D

Improves cutting ability

Question 340 1 Marks

How is the minor diameter of external thread checked
generally?

A

Using pitch gauge

B

Using knife edge of vernier caliper

C

Using screw thread gauge

D

Using thread ring gauge

Question 341 1 Marks

Which type of thread is used in lathe head screw?

A

Acme thread

B

Buttress thread

C

Knuckle thread

D

Square thread

Question 342 1 Marks

How multi start threads are specified?

A

By stating dia and pitch

B

By stating dia and angle of thread

C

By stating core dia and pitch

D

By stating dia, pitch, and no. of start

Question 343 1 Marks

Which one of the code is used to rewind the
program?

A

M38

B

M30

C

M39

D

M40

Question 344 1 Marks

Calculate pitch diameter of f 24 x 3 mm square thread?

A

21 mm

B

21.5 mm

C

22.5 mm

D

24 mm

Question 345 1 Marks

How many gears are assembled in tumbler gear mechanism?

A

2 gears

B

3 gears

C

4 gears

D

5 gears

Question 346 1 Marks

The CNC keyboards have with following keys?

A

Alphabetic control keys

B

Alphanumerical control keys electronic

C

CNC codes

D

Numerical Data based keys only

Question 347 1 Marks

What is the angle of saw tooth thread?

A

29 Degree

B

30 Degree

C

45 Degree

D

90 Degree

Question 348 1 Marks

Which part of the lathe is H shaped cast iron on the bed ways?

A

Saddle

B

Top slide

C

Tail stock

D

Cross slide

Question 349 1 Marks

What is the lead of M 24 x 3.5 triple start thread?

A

3.5 mm

B

8.5 mm

C

10.5 mm

D

12.8 mm

Question 350 1 Marks

What does QA and QC stand for?

A

Quality assurance and quenching control

B

Quality adjustment and quality complete

C

Quality assurance and quality control

D

Quality assurance and quenching control

Question 351 1 Marks

Which part of the lathe is situated at right hand side of the lathe bed?

A

Carriage

B

Tool post

C

Head stock

D

Tailstock

Question 352 1 Marks

Calculate the change gear to cut 8 mm pitch on a work
having a lead screw of 4 mm pitch gear 20 to 120 teeth
by 5 teeth range

A

Driver 40 teeth Driven 20 teeth

B

Driver 50 teeth Driven 60 teeth

C

Driver 80 teeth Driven 25 teeth

D

Driver 60 teeth Driven 35 teeth

Question 353 1 Marks

Why in CNC machine tool, the part program entered
in edit mode is stored into the computer memory?

A

Can be used only once

B

Can be used again and again

C

Can be used again but it has to be modified every time

D

Cannot say

Question 354 1 Marks

What is the purpose of change gear train in centre lathe?

A

Connecting spindle gear to fixed stud gear

B

Connecting fixed stud gear to quick change gear box

C

Connecting quick change gear box to lead screw

D

Connecting lead screw to changing dial

Question 355 1 Marks

What is the relationship between pitch and lead of a single start thread?

A

Lead is twice the pitch

B

Lead is half the pitch

C

Lead is equal to pitch

D

Lead is 1/4 pitch

Question 356 1 Marks

Which material in used to make back plate of a three jaw chuck?

A

Cast steel

B

Cast iron

C

Alloy steel

D

Wrought iron

Question 357 1 Marks

Which grade of angle plate are more accuracy and
used for tool room work?

A

Grade 1

B

Grade 2

C

Grade 3

D

Grade 4

Question 358 1 Marks

Which gas is used in Halon extinguisher?

A

Hydrogen

B

Carbon dioxide

C

Carbon monoxide

D

Carbon tetrachloride

Question 359 1 Marks

What is the name of the centre accommodates in the main spindle sleeve?

A

Dead centre

B

Half centre

C

Pipe centre

D

Live centre

Question 360 1 Marks

Which part is assembled in compound rest other than compound slide?

A

Swivel base

B

Cross slide

C

Saddle

D

Apron

Question 361 1 Marks

How the part programming mistakes can be avoided?

A

NC (Numerical control) machine only

B

CNC (Computer numerical control) machine only

C

Both NC and CNC machine

D

Cannot be avoided in CNC machine

Question 362 1 Marks

Find the lead of a 2 start thread having pitch 1.5
mm?

A

1.50 mm

B

3.00 mm

C

4.50 mm

D

6.00 mm

Question 363 1 Marks

Which lathe accessory is used to hold the previously bored job?

A

Face plate

B

Drive plate

C

Mandrel

D

Catch plate

Question 364 1 Marks

Which one of the advantage of mass production?

A

Special purpose machinery are necessary

B

Jigs and fixture are needed

C

Gauges are to be used

D

Time for manufacturing of components is reduced

Question 365 1 Marks

Which angle plate is used to support jobs in different
angles?

A

Box type

B

Plain type

C

Slotted type

D

Adjustable type

Question 366 1 Marks

Which part of the universal surface gauge is used for fine adjustment?

A

Scriber

B

Spindle

C

Guide pin

D

Rocker arm

Question 367 1 Marks

Which mode execute thet program continuosly one
block after another block?

A

Jog mode

B

Edit mode

C

MPG mode

D

Auto mode

Question 368 1 Marks

What is the term the distance from a point on thread to the corresponding point on next thread?

A

Depth

B

Effective diameter

C

Pitch

D

Minor diameter

Question 369 1 Marks

Which material used for manufacturing crown wheel of a three jaw chuck?

A

Alloy steel

B

Cast iron

C

High carbon steel

D

Chrome vanadium steel

Question 370 1 Marks

Which of the following used buttress thread?

A

Screw jack

B

Lead screw of lathe

C

Carpentry vice

D

General purpose nut and bolt

Question 371 1 Marks

Calculate the depth of buttress thread diameter 30 mm pitch 3 mm?

A

1.25 mm

B

1.5 mm

C

2.25 mm

D

3.00 mm

Question 372 1 Marks

What is the name of the pattern of work surface caused by the movement of cutting tool?

A

Surface texture

B

Roughness

C

Roughness facing

D

Waviness

Question 373 1 Marks

Which heat treatment process is used to reduce internal stresses of a hardened tool?

A

Stabilizing

B

Annealing

C

Normalizing

D

Tempering

Question 374 1 Marks

Calculate the pitch diameter of M 36 x 4 mm square thread?

A

32 mm

B

33 mm

C

34 mm

D

35 mm

Question 375 1 Marks

Calculate the change gear to cut 6 mm pitch on a work
having a lead screw of 5 mm pitch. Gears available
from 20 to 120 teeth by 5 teeth range.

A

Driver 60 driven 50

B

Driver 40 driven 20

C

Driver 85 teeth driven 60 teeth

D

Driver 100 teeth driven 25 teeth

Question 376 1 Marks

Which formula to be used to find core diameter?

A

Core diameter = Major diameter - 2 depth

B

Core diameter = Major diameter - depth

C

Core diameter = Major diameter - minor diameter

D

Core diameter = Major diameter - pitch

Question 377 1 Marks

What do you mean by simulation?

A

Cross checking of programmable DATA

B

Finding out of work offset values

C

Finding out of tool geometrical values

D

Editing of related part program

Question 378 1 Marks

Which is the operation in point to point system used?

A

Drilling

B

Parting

C

Grooving

D

Facing

Question 379 1 Marks

Which type of tool is suitable to produce form surface in
mass production activities?

A

Using carbide tipped form tool

B

High carbon steel tool

C

High speed steel cutting tool

D

Using single point cutting tool

Question 380 1 Marks

Which deviation is zero in shfrt basis system?

A

Upper devication is zero

B

Lower deviation is zero

C

Both upper and lower deviation is zero

D

Both upper and lower deviation is below basic size

Question 381 1 Marks

Which material is used to make angle plate?

A

Mild steel

B

Cast iron

C

Tool steel

D

Wrought iron

Question 382 1 Marks

What will be the effect in helix angle if lead
changes for a give diameter work?

A

Lead decreases helix angle increases

B

Lead decreases helix angle decreases

C

Helix angle have no change when lead decreases

D

Helix angle have no change when lead increases

Question 383 1 Marks

Which material is used to make radius gauge?

A

Cast steel

B

Tool steel

C

Hardened steel

D

Stainless steel

Question 384 1 Marks

Which type of jig is used for large awkward shaped piece part is to drilled in many directions?

A

Plate jig

B

Post jig

C

Table jig

D

Trunnion jig

Question 385 1 Marks

What is the type of fit if minimum size of hole is larger than maximum size of shaft?

A

Clearance

B

Interferance

C

Transition

D

Force

Question 386 1 Marks

What is the name of first member in a simple gear
train?

A

Driven

B

Driver

C

Idler

D

Reverible gear

Question 387 1 Marks

Which punch is used for locating center of the hole?

A

Dot punch

B

Prick punch

C

Center punch

D

Hollow Punch

Question 388 1 Marks

Where the fixed steady rest clamped on a lathe?

A

On a saddle

B

On a carriage

C

On tool post

D

On the lathe bed

Question 389 1 Marks

Which one of the following heat treatment process produces a scale free surface on the components?

A

Flame hardening

B

Case hardening

C

Nitriding

D

Induction hardening

Question 390 1 Marks

What is the ratio between the pitch diameter and number of teeth of gear?

A

Tooth thickness

B

Module

C

Dedendum

D

Addendum

Question 391 1 Marks

Which point in any CNC machine the position measuring systems has a starting point to each axis?

A

Work zero

B

Tool geometrical value

C

Machine zero

D

Reference mode

Question 392 1 Marks

How can the unexpected breakdowns of machines
reduced?

A

By preventive maintenance

B

By break down maintenance

C

By productive maintenance

D

By quality maintenance

Question 393 1 Marks

Which angle determines the rake angle at the cutting edge of twist drill?

A

Wedge angle

B

Helix angle

C

Point angle

D

Clearance angle

Question 394 1 Marks

What is the formula to calculate the core dia of the square thread?

A

Major dia - 2 x depth

B

Major dia - minor dia

C

Major dia - Pitch dia

D

Major dia - Depth of thread

Question 395 1 Marks

What is the included angle of prick punch used for marking light punch marks needed to position dividers?

A

30 Degree

B

45 Degree

C

60 Degree

D

90 Degree

Question 396 1 Marks

Which angle is preventing the cutting edge from rubbing action?

A

Web angle

B

Rake angle

C

Clearance angle

D

Point angle

Question 397 1 Marks

Which part of centre lathe make angular movement?

A

Saddle

B

Top slide

C

Cross slide

D

Compound slide

Question 398 1 Marks

Where the bend type lathe carrier is engaged?

A

Face plate

B

Angle plate

C

Catch plate

D

Driving plate

Question 399 1 Marks

Which axis is parallel to Z - axis?

A

X - axis

B

Spindle axis

C

Tool axis

D

Y-axis

Question 400 1 Marks

Which M code is used to activate coolant pump in
CNC machine?

A

M01

B

M06

C

M08

D

M09

Question 401 1 Marks

Why the ball centre is used in taper turning by offset method?

A

Minimum wear and strain

B

Minimum friction

C

Economical

D

Easy setting

Question 402 1 Marks

Which type of instrument is generally used to check
eccentricity?

A

Dial test indicator

B

Micrometer

C

Surface gauge

D

Vernier calipers

Question 403 1 Marks

Which code is suitable for tool nose radius
compensation at right side?

A

G50

B

G42

C

G40

D

G41

Question 404 1 Marks

What is the advantage of using idler gear in simple
gear train?

A

Affect gear ratio

B

Does not affect gear ratio

C

Change the speed

D

Easy to engage

Question 405 1 Marks

Which deviation is zero in hole basis system?

A

Lower deviation is zero

B

Upper deviation is zero

C

Both upper and lower deviation is zero

D

Both upper and lower deviation is below basic size

Question 406 1 Marks

Which gauge is generally used to check internal threads?

A

Thread ring gauge

B

Thread calliper gauge

C

Thread plug gauge

D

Thread snap gauge

Question 407 1 Marks

What is the type of fit for the expression Fit 25H7/p6?

A

Interference fit

B

Clearance fit

C

Trasition fit

D

Running fit

Question 408 1 Marks

What is the shape of buttress thread flank?

A

One flank is 90 Degree and the other 45 Degree

B

One flank is 30 Degree and the other 45 Degree

C

One flank is 60 Degree and the other 45 Degree

D

Two flanks are at 60 Degree

Question 409 1 Marks

Which work holding device is more suitable for accurate boring using tool maker's button?

A

3-Jaw chuck

B

Magnetic chuck

C

Collect

D

Face plate

Question 410 1 Marks

Which portion of a hammer head is not hardened or left soft?

A

Face

B

Pein

C

Cheek

D

Cross pein

Question 411 1 Marks

Which method of multi-start thread cutting is depends upon the graduations marked on the dial and the number of teeth in worm wheel?

A

Thread chasing dial method

B

Method by moving the top slide

C

Method using slotted face plate

D

Dividing the first drive method

Question 412 1 Marks

Which method of holding is used for lengthy work to avoid over hanging?

A

In between centres

B

In four jaw chuck

C

In face plate

D

Angle plate

Question 413 1 Marks

Which mechanism is also called as reversing gear unit?

A

Tumbler gear

B

Change gear unit

C

Quick change box

D

Apron mechanism

Question 414 1 Marks

Which of the following structures of steel is obtained due to the drastic cooling form the austenite structure?

A

Pearlite

B

Cementite

C

Martensite

D

Ferrite

Question 415 1 Marks

What is the name of precision finishing operation
carried out by using fine abrasive materials?

A

Grinding

B

Lapping

C

Filing

D

Polishing

Question 416 1 Marks

Which one of the following CNC control systems are used on CNC machines?

A

Siemens and FANUC

B

Adobe reader and Microsoft

C

Excel and MS power point

D

MS office only

Question 417 1 Marks

What does the letter 's' stands in the equation d =Y-2(s+r) in taper measurement?

A

Diameter over the roller at large end

B

Diameter over the rollers at small end

C

Radius of the rollers

D

Distance from the centre of the roller to the end of the component

Question 418 1 Marks

Which type of vice is used for marking of small jobs on the surface plate?

A

Pipe vice

B

Bench vice

C

Tool Makers vice

D

Quick releasing vice

Question 419 1 Marks

What is the drill point angle for drilling brass?

A

140 Degree

B

130 Degree

C

120 Degree

D

118 Degree

Question 420 1 Marks

What is the indication of 'x' axis in CNC lathe
machine?

A

The radius of the component

B

The length of the component

C

The diameter of the component

D

Centre axis of the component

Question 421 1 Marks

Which G-code is suitable for thread cutting?

A

G30

B

G32

C

G34

D

G01

Question 422 1 Marks

Which code suitable for circular interpolation counter
clockwise direction?

A

G01

B

G02

C

G03

D

G04

Question 423 1 Marks

Which is the internal part of a bench vice?

A

Handle

B

Box nut

C

Fixed jaw

D

Movable jaw

Question 424 1 Marks

What is the advantage of preventive maintenance
system?

A

Improves quantity and quality of product

B

Reduce the manpower for the maintenance

C

Reduce the cost of maintenance

D

Reduce the life of machine

Question 425 1 Marks

What is the specification for shape of file?

A

Cut

B

Grades

C

Length

D

Cross section

Question 426 1 Marks

How we can protect the surface of marking table to maintain accuracy?

A

By providing a guard

B

Providing plastic coating

C

By applying thin layers of oil

D

Provide a stand

Question 427 1 Marks

Which thread has only one helical formation?

A

Single start

B

Double start

C

Triple start

D

Quadrapple

Question 428 1 Marks

Which type of vice has a trigger for opening the movable jaw?

A

Pin vice

B

Pipe vice

C

Bench vice

D

Quick releasing vice

Question 429 1 Marks

Which mode the program will be executed
continuously one block after another block?

A

Jog mode

B

Auto mode

C

Edit mode

D

Manual mode

Question 430 1 Marks

What is the normal lip clearance angle for standard drill?

A

2 Degree- 4 Degree

B

5 Degree - 7 Degree

C

8 Degree - 12 Degree

D

13 Degree - 16 Degree

Question 431 1 Marks

What is the roughnes value of grade No N1?

A

6.3 microns

B

0.025 microns

C

12.5 microns

D

0.4 microns

Question 432 1 Marks

What is the included angle of center punch?

A

30 Degree

B

45 Degree

C

60 Degree

D

90 Degree

Question 433 1 Marks

Which material is used for making lathe bed?

A

Pig iron

B

Mild steel

C

Grey cast iron

D

Nodular cast iron

Question 434 1 Marks

What is the specific use of tool maker's button in lathe
operation?

A

For producing a tool to high degree accuracy

B

For producing bore to a high degree of positional accuracy

C

For producing a button to a high degree of positional accuracy

D

For producing tool to a high degree of positional accuracy

Question 435 1 Marks

Calculate the pitch diameter of M 64 x 6 mm square thread?

A

58 mm

B

60 mm

C

61 mm

D

62 mm

Question 436 1 Marks

Which one of the program block may suitable to
move the cutting tool 'x' axis 42.0 'z' axis 0.0 with the
feed of 0.1 mm?

A

G00 x 42.0 z 0.0 F 0.1;

B

G02 x 42.0 z 0.0 F 0.1;

C

G01 x 42.0 z 0.0 F 0.1;

D

G03 x 42.0 z 0.0 F 0.1;

Question 437 1 Marks

Which part of the lathe helps to give angular movement during taper turning?

A

Saddle

B

Tool Post

C

Cross slide

D

Compound slide

Question 438 1 Marks

What is the use of Goo activates the command?

A

Linear interpolation

B

Rapid traverse

C

Tool returns from reference point

D

Return to reference point

Question 439 1 Marks

Which one is example of ferrous tool material?

A

High carbon steel

B

Carbide tool

C

Stellite

D

Diamonds

Question 440 1 Marks

What is 7 with expression of fit 30H7/g6?

A

Hole tolerance grade

B

Shaft tolerance grade

C

Shaft and hole tolerance

D

Shaft and hole allowance

Question 441 1 Marks

What is the purpose of normalizing steel?

A

Remove induced stresses

B

Improve machinability

C

Soften the steel

D

Increase the toughness and reduce brittleness

Question 442 1 Marks

What defect may occur during grinding a form tool cutting edge?

A

Form tool getting broken

B

Shape of the form gets altered

C

Clearance angle changed

D

Thickness of the tool reduced

Question 443 1 Marks

What is the recommended feed rate for turning cast iron
(grey) using H.S.S tool?

A

0.08-0.03 mm/rev

B

0.2-1.00 mm/rev

C

0.2-1.5 mm/rev

D

0.15-0.7 mm/rev

Question 444 1 Marks

What type of taper provided on the shank of lathe center?

A

Jarno

B

Morse

C

Metric

D

Brown & sharp

Question 445 1 Marks

What is the process of increasing carbon percentage on the surface of low carbon steel?

A

Hardening

B

Nitriding

C

Carburizing

D

Tempering

Question 446 1 Marks

What is the purpose of preventive maintenance?

A

Maintain machine in good working order

B

Increase the cost of inspection

C

Reduce the vibration of machine

D

To keep the maintenance records

Question 447 1 Marks

Which one belongs to team work?

A

Soft skill

B

Hard skill

C

Knowledge

D

Technical skill

Question 448 1 Marks

What does Sq 60 x 9 IS 4694-1968 means?

A

Square Thread 60 mm dia, 9 mm pitch

B

Buttress thread 60 mm dia x 9 mm pitch

C

Acme thread 60 mm dia x 9 mm pitch

D

Worm thread 60 mm dia x 9 mm pitch

Question 449 1 Marks

Which one of the following M-code is suitable for spindle rotation stop?

A

M05

B

M03

C

M06

D

M04

Question 450 1 Marks

Which parameter will decide the driver and driven gear
ratio to cut thread on lathe?

A

Major dia of work

B

Pitch

C

Root dia of work

D

Angle of thread

Question 451 1 Marks

Calculate change gears to cut a three start thread having a pitch of 1.5 mm; the lead screw has a pitch of 6 mm.

A

Driver 45 teeth, Driven 60 teeth

B

Driver 60 teeth, Driven 50 teeth

C

Driver 30 teeth, Driven 70 teeth

D

Driver 50 teeth, Driven 100 teeth

Question 452 1 Marks

How does periodic inspection of the machines and equipments is carried out in preventive maintenance?

A

As per checklist

B

As per the knowledge of trainee

C

As per the knowledge of instructor

D

As per the knowledge of manager

Question 453 1 Marks

Where the grinding attachment is mounted in centre lathe?

A

Rear tool post

B

Compound rest

C

Tailstock

D

Lathe bed

Question 454 1 Marks

Which type taper is provided at the hollow end of the tailstock barrel/spindle?

A

Jarno taper

B

Morse taper

C

Metric taper

D

Brown & sharpe taper

Question 455 1 Marks

What is the use of inside micrometer?

A

To measure the depth of hole

B

Measuring keyways and small slots

C

Measuring the external surface

D

Determine the distance between internal parallel surface

Question 456 1 Marks

Which one of the following code is suitable for spindle rotation in clock wise direction?

A

G02

B

M03

C

G03

D

M04

Question 457 1 Marks

What is the type of fit if minimum size of the shaft is larger than maximum size of hole?

A

Interference

B

Clearance

C

Trasition

D

Running

Question 458 1 Marks

What is the purpose of idler gear in simple gear train?

A

Reduce gear ratio

B

Transmit power between driver and driven gears

C

Reduce spindle speed

D

Increase spindle speed

Question 459 1 Marks

Which gear drives the fixed stud gear in lathe?

A

Feed shaft

B

Tumbler gear

C

Norton gear box

D

Apron mechanism

Question 460 1 Marks

Which type of trapezoidal thread is used in places there motion is to be transmitted between shafts at right angle?

A

Acme thread

B

Buttress thread

C

Saw-tooth thread

D

Worm thread

Question 461 1 Marks

Why lapping tools are provided groove?

A

Expansion

B

For accommodate lapping compound

C

Clearance

D

Prevent damage to tool

Question 462 1 Marks

What is the shape of telescopic gauge?

A

C - shaped

B

U - shaped

C

T - shaped

D

S - shaped

Question 463 1 Marks

Which part of a lathe is used to catch thread
quickly?

A

Tool post

B

Top slide

C

Chasing dial

D

Cross - slide

Question 464 1 Marks

What is the advantage of roller steady rest over fixed rest?

A

It can fixed on saddle

B

Easy to rotate the work

C

It rotates and moves along the work

D

It can fixed on tool post

Question 465 1 Marks

Which is used to mark the center of a round rod?

A

Divider

B

Jenny caliper

C

Inside caliper

D

Outside caliper

Question 466 1 Marks

What is the advantage of maintenance records?

A

Reduce the clerical work

B

Monitor the frequent breakdown

C

Increase the cost of production

D

Zero breakdown maintenance

Question 467 1 Marks

Which type of tap wrench is used to minimise the damage of taps?

A

Bar type tap wrench

B

Solid type tap wrench

C

Double ended tap wrench

D

T handle type tap wrench

Question 468 1 Marks

Which thread is more suitable to hold the tool maker button
in position?

A

4BA thread

B

5BA thread

C

6BA thread

D

7BA thread

Question 469 1 Marks

Which safety practice refers, Do not wear the ring?

A

Road safety

B

General safety

C

Machine safety

D

Personal safety

Question 470 1 Marks

What is the tool life index of cemented carbide tool for
turning high carbon high chromium die steel?

A

0.15

B

0.2

C

0.4

D

0.35

Question 471 1 Marks

How the two halves of split bearing is joined?

A

On diameter line

B

On chord line

C

On length vice

D

On offset of shaft

Question 472 1 Marks

Which formula is used to find crest width of a buttress thread?

A

0.125 x pitch

B

0.317 x pitch

C

0.335 x pitch

D

0.5 x pitch

Question 473 1 Marks

What will be the effect in helix angle if diameter
changes for a given lead?

A

Diameters decreases helix angle increases

B

Diameters decreases helix angle decreases

C

No change in helix angle if diameter increases

D

No change in helix angle diameter decreases

Question 474 1 Marks

What is the length a spacing collar used in inside micrometer?

A

12 mm

B

13 mm

C

25 mm

D

38 mm

Question 475 1 Marks

Which material is used to make the stylus of mechanical surface indicator?

A

Mild steel

B

High carbon steel

C

High speed steel

D

Diamond

Question 476 1 Marks

What is the main use of using tool maker's button for face boring?

A

Easy to use

B

Unskilled labour can do

C

Truing is not necessary

D

Easy to set square to the axis of rotation

Question 477 1 Marks

How many precision rollers required for measuring
angle of tapered component?

A

1

B

2

C

3

D

4

Question 478 1 Marks

In Which mode we can input the program command
manually?

A

Auto mode

B

Jog mode

C

MDI mode

D

Edit mode

Question 479 1 Marks

Which method is suitable for measuring minor diameter of
internal thread?

A

By using screw thread micrometer

B

By using three wire method

C

By using slip gauge and precision roller

D

By using precision rolles and vernier calliper

Question 480 1 Marks

Which gauge is to be selected for checking the corner
radius of the job?

A

Radius gauge

B

Fillet gauge

C

Feeler gauge

D

Plug gauge

Question 481 1 Marks

What is the representation IT in limits and fits?

A

Tolerance

B

Tolerance grade

C

Tolerance unit

D

Tolerance number

Question 482 1 Marks

Where the driver pin is used?

A

Driving plate

B

Catch plate

C

Angle plate

D

Face plate

Question 483 1 Marks

Which jaw of 3 jaw chuck is used to hold hollow job?

A

Movable jaw

B

Fixed jaw

C

External jaw

D

Internal jaw

Question 484 1 Marks

How the roughness value is expressed?

A

Micrometer

B

Millimetre

C

Centimetre

D

Metre

Question 485 1 Marks

Which mode is used for moving the turret in X and Z
direction?

A

Jog mode

B

Edit mode

C

Auto mode

D

MDI mode

Question 486 1 Marks

Which one of the following M-code is suitable for
chuck close?

A

M09

B

M11

C

M10

D

M13

Question 487 1 Marks

What heat treatment process the nitriding comes under?

A

Hardening

B

Case hardening

C

Tempering

D

Normalizing

Question 488 1 Marks

Which type of chisel is used to cut key ways?

A

Flat chisel

B

Cross cut chisel

C

Diamond point chisel

D

Half round nose chisel

Question 489 1 Marks

What will happen to the tool life if the spindle is running
higher speed?

A

Less

B

More

C

Medium

D

Very less

Question 490 1 Marks

What is the accuracy of measurement by a try square?

A

0.002 mm / 10mm length

B

0.02 mm / 100mm length

C

0.2 mm / 1000 mm length

D

2 mm / 1 mm length

Question 491 1 Marks

Which is a non-metallic tool material?

A

High carbon steel

B

Diamonds

C

Stellite

D

Carbide

Question 492 1 Marks

What is the material of files?

A

Cast iron

B

Mild steel

C

Low alloy steel

D

High carbon steel

Question 493 1 Marks

Which metal is to be case hardened?

A

High carbon steel

B

Cast iron (heavy parts)

C

Low carbon steel parts

D

Alloy steel parts

Question 494 1 Marks

What is the hole basis system?

A

Size of shaft is constant

B

Size of hole is constant

C

Size of the hole is varied

D

Size of both hole and shaft are varied

Question 495 1 Marks

What is the point angle of cold chisel to cut aluminium?

A

30 Degree

B

45 Degree

C

55 Degree

D

60 Degree

Question 496 1 Marks

Which formula is used to find root width of a buttress thread?

A

0.125 x pitch

B

0.317 x pitch

C

0.335 x pitch

D

0.5 x pitch

Question 497 1 Marks

Which of the following property of metal is impart by annealing?

A

Hardness

B

Toughness

C

Ductility

D

Surface hardness

Question 498 1 Marks

How much angle is to be added for lead angle of a square thread as clearance to the helix angle?

A

1 Degree 55 Minutes

B

1 Degree 50 Minutes

C

1 Degree 45 Minutes

D

1 Degree 30 Minutes

Question 499 1 Marks

Which one of the following code used to switch off
the coolant pump?

A

M07

B

M08

C

M09

D

M30

Question 500 1 Marks

Which part of the lathe gives perpendicular movement to the tool?

A

Apron

B

Tailstock

C

Carriages

D

Cross slide

Question 501 1 Marks

Which surface is finished by honing?

A

External cylindrical surface

B

Internal cylindrical surface

C

Both external and internal surface

D

Flat surface

Question 502 1 Marks

Which command activates in automatic mode?

A

Work offset settings are taken

B

Tool changes automatically

C

Program executed

D

Program simulation

Question 503 1 Marks

Which of the following feed back devices can sense
both speed and position?

A

Resolver

B

Tachometer

C

Encoder

D

Motor

How many seconds is 1 Degree?

A thread is represented as M12 x 1.5. What does represent the letter 12?

Which chuck is mainly used for getting a very effective grip over the job?

What is the thread depth of square thread SQ60x9?

How can measure the minor diameter of a internal thread accurately?

Which is main criteria to increase the tool life?

What is the use of a sine bar?

Which is the welding process, if base metal and filler is melted to form the joint?

Calculate the depth of buttress thread diameter 30 mm of pitch 3mm?

Calculate the change gear required to cut 4mm pitch thread in a lathe having lead screw of 4mm (lathe stud gear (driver has 50 teeth)

Find the gears required to cut 4.5mm pitch on a lathe having a lead screw of 4 TPI. Gears available from 20 to 120 teeth by 5 teeth with a special gear of 127T.

What is the purpose of using thread micrometer?

Calculate the driven gear to cut 1.5mm pitch thread on a job using a lathe having lead screw of 4mm pitch with driver gear 30 teeth?

What is removing dull grain in order to make grinding wheel sharp?

Which formula is used to find depth of ACME thread?

What is the value of tool life index for cutting cast iron by cemented carbide tool?

What is the relationship between pitch and depth of a buttress thread?

What is the depth of cut for 10TPI BSW thread?

How is the filler material distributed in the joint in braze welding?

Which wheel is used for grinding tough materials?

Which device is used as datum while marking with Vernier height gauge?

Which method is used for turning steep taper?

What is the thread form cut by using chasers?

What is the minor diameter of screw thread SQ 62 x 10.5 with depth clearance of 0.12 mm?

How is the 'length of sine bars' specified?

What is the use of BSW thread?

Which is the cause of small particles of the material become embedded in the space between the grains of the grinding wheel?

What is the isolating medium to prevent rapid cooling after brazing a tipped tool?

Find the change gear (driven gear) to cut 2.5mm pitch thread using a lathe having lead screw of pitch 5mm with driver gear 60 teeth?

Which thread is used for general purpose fastening?

What is the main disadvantage of a braze welded joints?

Which terms are needed to calculate tool life index?

Which method of thread forming does not produce chips and used in mass production?

What is the name of thread producing method by cold forging and by plastic deformation?

What is the least count of vernier height gauge?

How the thread are formed in thread rolling?

What is calculated by formula 0.75 x pitch?

What is the formula for finding the depth of a BIS metric thread?

Calculate the driven gear to cut 1.5mm pitch thread on a job using a lathe having lead screw of 5mm pitch with driver gear of 30 teeth?

What is thread element that determine the direction of rotation on screw thread?

How metric chasing dial differ from British chasing dial?

What is the shape of buttress thread flank?

Which mandrels is NOT used in between lathe centres?

What is the minor diameter of Trapezoidal square thread Tr 40 x 7 depth clearance of 0.01 mm?

Which type of thread is produced by tap and die?

Which one is the example for transmission of motion using thread

What is the angle of metric ACME thread

What will happen if threading tool is set below centre height?

What is the disadvantage of chaser?

What is the use of hand chaser?

What is the reason for providing buttress thread in carpentry vice?

What is the purpose of using v prism method in thread measurement?

What is the formula for finding gear ratio for fractional pitch thread?

Which mandrel is used for machining similar part where internal diameter vary slightly?

Which one of the following factor greatly causes to reduce tool life?

What is the reason for using ACME thread in lathe lead screw?

Which angle is ground on ACME threading tool?

What is the width of the tool to cut square thread of 30 x 3 mm pitch?

Which part of the combination set is used for measuring the angles?

How many carriers are available in a set?

Calculate the amount of off-set if total length of job = 80 mm and tan = 5 Degree 45 minutes?

Which material is used for making nozzle for gas welding?

Which is the method to produce accurate internal thread?

Calculate the change gear (driven gear) if driver is 50 teeth to cut 2.5mm pitch thread on a job by lathe having a lead screw of 5mm pitch?

Which is the form of Trapezoidal thread?

Which diameter is maintained in a job for making threads by rolling?

Which type thread is used in lathe lead screw?

Calculate the least count of V.B.P if 23 div on main scale is divided into 12 equal parts

What percentage of cutting speed is reduced for tool life dubling?

What is the formula used to find flat width of a buttress thread?

What is the core dia of square thread 75 x 11 mm pitch?

Which is the angle of buttress thread?

What are the uses of B.S.P thread?

Calculate the flat width of 10 mm pitch buttress thread?

What is the name of device used to drive the work during turning between centres?

What is the core diameter of BSW thread of 1 inch outer dia and 8 TPI

Calculate the driven gear to cut 2mm pitch on a job using a lathe having lead screw of 4mm pitch with driven gear 50 teeth?

Convert 8 Degree 44 minutes into minutes?

Which formula is used to find root width of a buttress thread?

Which chuck is mainly used for getting a
very effective grip over the job?

Which wheel is used for grinding tough
materials?

What is the thread form cut by using
chasers?

Which thread is used for general purpose
fastening?

What is the least count of vernier height
gauge?

What is the formula for finding the depth of
a BIS metric thread?

Which part of the combination set is used
for measuring the angles?

Which is the method to produce accurate
internal thread?

Calculate the least count of V.B.P if 23 div on
main scale is divided into 12 equal parts

What is the purpose of using taper parallels
in thread measurement?

Which is the term used to express grinding
wheels to hold the abrasive particle together?

Which bonding material is not affected by
water, acid or normal temperature?

Which thread is recommended for pipe and
pipe fittings?

What is the schedule of lubrication for
lathe bed?

What is the accuracy of the protractor head
of a combination set?

How can measure the minor diameter of a
internal thread?

Find the gears for simple gear train, if pitch
of lead screw is 6 mm and pitch of thread to be cut
is 2 mm?

Which mechanism is used for converting
linear motion into rotary motion in plunger dial
gauge?

What is the purpose of the beveled edges of
the rule in a vernier bevel protractor?