Quiz Questions

ITI Quiz - 25-May-2026 09:26 PM (ITISKILL1668TL)

Q-Paper A-Paper
Question 1 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 2 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 3 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 4 1 Marks
Which thread is used for general purpose
fastening?
A
BSW
B
BSF
C
BA
D
Unified
Question 5 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 6 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 7 1 Marks
Which material is used for making nozzle for gas welding?
A
Mild steel
B
High carbon steel
C
Copper
D
Bronze
Question 8 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 9 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 10 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 11 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 12 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 13 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 14 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 15 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 16 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 17 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 18 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 19 1 Marks
What is removing dull grain in order to make grinding wheel sharp?
A
Loading
B
Glazing
C
Dressing
D
Trueing
Question 20 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 21 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 22 1 Marks
How the thread are formed in thread rolling?
A
Grinding
B
Casting
C
Plastic deformation
D
Milling
Question 23 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 24 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 25 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 26 1 Marks
Which is the angle of buttress thread?
A
30 Degree
B
45 Degree
C
55 Degree
D
60 Degree
Question 27 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 28 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 29 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 30 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 31 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 32 1 Marks
Which part is pivoted to the disc of vernier bevel protractor?
A
Disc
B
Stock
C
Dial
D
Blade
Question 33 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 34 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 35 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 36 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 37 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 38 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 39 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 40 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 41 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 42 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 43 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 44 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 45 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 46 1 Marks
What is the angle of ACME thread
A
29 Degree
B
45 Degree
C
55 Degree
D
60 Degree
Question 47 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 48 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 49 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 50 1 Marks
Which type thread is used in lathe lead screw?
A
Metric
B
Buttress
C
Square
D
ACME
Question 51 1 Marks
Which is the method to produce accurate
internal thread?
A
Thread chasers
B
Thread rolling
C
Thread milling
D
Using dies
Question 52 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 53 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 54 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 55 1 Marks
Which wheel is used for grinding tough
materials?
A
Silicon carbide
B
Aluminium oxide
C
Cemented carbide
D
Ceramic
Question 56 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 57 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 58 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 59 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 60 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 61 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 62 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 63 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 64 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 65 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 66 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 67 1 Marks
Which is main criteria to increase the tool life?
A
Feed
B
Depth of cut
C
Material
D
Cutting speed
Question 68 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 69 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 70 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 71 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 72 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 73 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 74 1 Marks
Which is the smallest unit of angular measurement?
A
Radian
B
Degree
C
Minutes
D
Seconds
Question 75 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 76 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 77 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 78 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 79 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 80 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 81 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 82 1 Marks
How many un-numbered divisions on the British chasing dial?
A
3
B
4
C
12
D
18
Question 83 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 84 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 85 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 86 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 87 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 88 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 89 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 90 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 91 1 Marks
Which angle is ground on ACME threading tool?
A
29 Degree
B
45 Degree
C
55 Degree
D
60 Degree
Question 92 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 93 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 94 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 95 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 96 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 97 1 Marks
Select a suitable instrument for measuring angles?
A
Vernier caliper
B
Calipers
C
Vernier bevel protractor
D
Vernier height gauge
Question 98 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 99 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 100 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 101 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 102 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 103 1 Marks
What is the angle of saw tooth thread?
A
29 Degree
B
30 Degree
C
45 Degree
D
90 Degree
Question 104 1 Marks
Which is used to support hollows end jobs?
A
Ball centre
B
Pipe centre
C
Female centre
D
Tipped centre
Question 105 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 106 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 107 1 Marks
Which is the chip less method of thread production?
A
Die head
B
Thread rolling
C
Thread milling
D
Thread grinding
Question 108 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 109 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 110 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 111 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 112 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 113 1 Marks
Which bonding material is not affected by
water, acid or normal temperature?
A
Vetrified
B
Resinoid
C
Backlite
D
Rubber
Question 114 1 Marks
How many seconds is 1 Degree?
A
6000%
B
36000%
C
360000%
D
3600000%
Question 115 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 116 1 Marks
What term indicate actual size of the
abrasive grain?
A
Structure
B
Grit size
C
Grade of bond
D
Abrassive type
Question 117 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 118 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 119 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 120 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 121 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 122 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 123 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 124 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 125 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 126 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 127 1 Marks
Which is the form of Trapezoidal thread?
A
BSW
B
Metric
C
BSF
D
ACME
Question 128 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 129 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 130 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 131 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 132 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 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
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 135 1 Marks
What is the angle of metric ACME thread
A
29 Degree
B
30 Degree
C
45 Degree
D
47.5 Degree
Question 136 1 Marks
Convert 8 Degree 44 minutes into minutes?
A
424
B
428
C
524
D
536
Question 137 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 138 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 139 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 140 1 Marks
What is the schedule of lubrication for
lathe bed?
A
Daily
B
Weekly
C
Monthly
D
Frequently
Question 141 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 142 1 Marks
Which method is non metallic threads are produced?
A
Thread milling
B
Thread casting
C
Thread grinding
D
Thread chasing
Question 143 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 144 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 145 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 146 1 Marks
Which thread is recommended for pipe and
pipe fittings?
A
BSW thread
B
BSF thread
C
BSP thread
D
BA thread
Question 147 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 148 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 149 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 150 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 151 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 152 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 153 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 154 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 155 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 156 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 157 1 Marks
How many carriers are available in a set?
A
4 numbers
B
6 numbers
C
8 numbers
D
10 numbers
Question 158 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 159 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 160 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 161 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 162 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 163 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 164 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 165 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 166 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