Quiz Questions - ITI Quiz - 05-Feb-2026 08:49 AM

Question 1 1 Marks

What will happen if the current is low while arc welding?

A

Formed over lap

B

Spatterns are more

C

Electrode fused speedly

D

Base metal edges not melt properly

Question 2 1 Marks

Which system of welding is free from 'Arc blow'?

A

AC welding

B

DC Reverse polarity

C

DC straight polarity

D

Welding with long arc

Question 3 1 Marks

Which test indicates the hardness of a metal?

A

Brinell test

B

Tensile test

C

Charpy izod test

D

Ultrasonic inspection

Question 4 1 Marks

What is the main purpose of 'Normalising' steel?

A

To control hardness

B

To prevent cracking

C

To make welding operation easier

D

To produce fine grain of uniform structure

Question 5 1 Marks

What is the pre-heating temperature of cast iron?

A

200 to 310 Degree Centigrade

B

250 to 350 Degree Centigrade

C

300 to 350 Degree Centigrade

D

350 to 450 Degree Centigrade

Question 6 1 Marks

Which is used to cut thin pipes of smaller sizes?

A

Chisel

B

Hack sawing

C

Pipe cutter

D

Lathe parting tool

Question 7 1 Marks

Which process causes the increase in the strength of part after fabrication?

A

Hardening

B

Tempering

C

Quenching

D

Normalising

Question 8 1 Marks

Which heat treatment process causes the reduction of brittleness in the steel?

A

By annealing

B

By hardening

C

By tempering

D

By normalising

Question 9 1 Marks

What is the name of last bit of an discarded electrode?

A

Red end

B

Dead end

C

Stub end

D

Waste end

Question 10 1 Marks

What type of preheating is done only at the portions to be welded?

A

Full preheating

B

Local preheating

C

Direct preheating

D

Indirect preheating

Question 11 1 Marks

Which type of cast iron possess higher compressive strength?

A

Grey cast iron

B

White cast iron

C

Nodular cast iron

D

Malleable cast iron

Question 12 1 Marks

What is the cause of hair line separation in the bead in arc welding?

A

Fast cooling

B

Slow cooling

C

Long arc length

D

Wrong selection of electrode

Question 13 1 Marks

How a pipe is specified?

A

Dia only

B

Length only

C

Outer dia only

D

Outer dia x inner dia x length

Question 14 1 Marks

What is the process of hot weld joint rapidly hammered to relieve internal stresses?

A

Peening

B

Annealing

C

Heat treatment

D

Straightening

Question 15 1 Marks

How the construction of a nozzle for gouging is identified?

A

Straight nozzle with single preheating hole

B

Bent nozzle with sectorial preheating holes

C

Fully bent nozzle with circular preheating holes

D

Slightly bent nozzle with circular preheating six holes

Question 16 1 Marks

Which type of cast iron offers greater resistance to shock?

A

Grey cast iron

B

White cast iron

C

Nodular cast iron

D

Malleable cast iron

Question 17 1 Marks

What type of defect will occur due to evaporation of the trapped gas from the liquid metal?

A

Arc blow

B

Porosity

C

Over lap

D

Crack

Question 18 1 Marks

Which of the following produces unstable arc?

A

Long arc length

B

Short arc length

C

Normal arc length

D

Too long arc length

Question 19 1 Marks

What is the angle of pipe axis with the base for making an elbow joint?

A

30 Degree

B

45 Degree

C

75 Degree

D

90 Degree

Question 20 1 Marks

What is the grade of hacksaw blades with pitch 0.8mm?

A

Fine

B

Medium

C

Course

D

Rough

Question 21 1 Marks

How many segments are to be selected for welding 50 mm j pipe?

A

3 segments

B

4 segments

C

6 segments

D

8 segments

Question 22 1 Marks

What are the defects in generated acetylene gas?

A

Oxygen, hydrogen & carbon

B

Carbon monoxide unburit ash

C

Hydrogen, dust particles, ash

D

Hydrogen, lime dust, ammonia & water vapour

Question 23 1 Marks

What is the welding defect, with no fusion of base metal on root face, side face or between the weld run?

A

Porosity

B

Under cut

C

Lack of fusion

D

Lack of penetration

Question 24 1 Marks

What is the range of pressure used in an oxygen cylinder used in gas welding?

A

120 to 150 Kg/cm2

B

110 to 150 Kg/cm2

C

100 to 150 Kg/cm2

D

90 to 150 Kg/cm2

Question 25 1 Marks

Which element is present in contact electrodes in large proportion?

A

Carbon

B

Silicon

C

Manganese

D

Iron powder

Question 26 1 Marks

What is the bevel angle for pipe welding butt joint if wall thickness is more than 5mm?

A

60 Degree

B

75 Degree

C

80 Degree

D

90 Degree

Question 27 1 Marks

What is the composition of acetylene gas?

A

C - 72.3% H - 27.7%

B

C - 82.3% H - 17.7%

C

C - 90% H - 10%

D

C - 92.3% H - 7.7%

Question 28 1 Marks

How many equal divisions should be made while developing a 'T' pipe joint?

A

4 equal divisions

B

6 equal divisions

C

9 equal divisions

D

12 equal divisions

Question 29 1 Marks

What does the third digit of AWS codification in EB 5426HJX represent?

A

Type of current

B

Type of covering

C

Type of tensile strength

D

Type of welding position

Question 30 1 Marks

What are the standard electrode lengths available?

A

250 mm and 350 mm

B

350 mm and 450 mm

C

400 mm and 500 mm

D

500mm and 600mm

Question 31 1 Marks

What makes for the buckling of weld joint, in stainless steel during cooling?

A

Over heated zone

B

Low thermal conductivity

C

Chromium contamination

D

High thermal conductivity

Question 32 1 Marks

What is the name of the steel material which are not weldable?

A

High carbon steel

B

Medium carbon steel

C

Austenitic stainless steel

D

Ferrite and martensitic stainless steel

Question 33 1 Marks

What should be the pre - heating temperature of aluminium job for gas welding?

A

200 Degree Centigrade - 400 Degree Centigrade

B

250 Degree Centigrade - 400 Degree Centigrade

C

300 Degree Centigrade - 400 Degree Centigrade

D

350 Degree Centigrade - 400 Degree Centigrade

Question 34 1 Marks

What is the defect due to non cleaning the surfaces before welding?

A

Over lap

B

Lack of fusion

C

Surface porosity

D

Small cracks in bead

Question 35 1 Marks

Which one of the following methods of welding is not a method used to control distortion?

A

Skip welding

B

Back step welding

C

Right hand welding

D

Intermittent welding

Question 36 1 Marks

What is the base for selecting the nozzle size for gas welding of a pipe?

A

Groove angle

B

Welding position

C

Diameter of pipe

D

Pipe wall thickness

Question 37 1 Marks

Which welding process enables to weld dissimilar metals?

A

Brazing

B

Seam welding

C

Spot welding

D

Fusion welding

Question 38 1 Marks

Which filler rod to be used for gas welding aluminium?

A

Silicon - brass

B

Silicon - manganese

C

Copper - Silver alloy

D

Pure aluminium, 5% silicon aluminium alloy

Question 39 1 Marks

What is the defect of metal flowing into the surface of base metal without fusing it?

A

Over lap

B

Under cut

C

Lack of fusion

D

Lack of penetration

Question 40 1 Marks

What is the welding position as per ASME for a pipe joint held vertically, welding in a horizontal line?

A

1G

B

2G

C

5G

D

6G

Question 41 1 Marks

What is the name of small metal particles which are thrown out of the arc during welding?

A

Slag

B

Spatters

C

Stub end

D

Weld metal

Question 42 1 Marks

Which accessory is used to protect the eyes during gas welding?

A

Helmet

B

Hand screen

C

Colour goggles

D

Grinding goggles

Question 43 1 Marks

What method is followed to make a circular gas cutting?

A

Using hand as a guide

B

Using a guide clamp fitted to torch body

C

Step by step cutting circular segments

D

Manual rotation on the circumference of the circle

Question 44 1 Marks

What is the reason for the defect of more spatter during arc welding?

A

Insufficient root gap

B

Welding current too high

C

Wrong angle of electrode

D

Use of a very short arc length

Question 45 1 Marks

Which type of polarity is used in welding non ferrous metals?

A

AC Transformer

B

Reverse polarity

C

Straight polarity

D

DC Motor generator

Question 46 1 Marks

What should be the angle of filler rod, by rightward welding?

A

30 Degree - 40 Degree

B

40 Degree - 50 Degree

C

50 Degree - 60 Degree

D

60 Degree - 70 Degree

Question 47 1 Marks

What size of CCMS filler rod is used for finish run of Dia 50mm pipe root welded using Dia 1.65 filler?

A

Dia 1.6 mm

B

Dia 3.0 mm

C

Dia 3.5 mm

D

Dia 4.0 mm

Question 48 1 Marks

How the repairs of cracks in cast iron component carried out?

A

By using clamps during welding process

B

Similar to arc welding mild steel plate

C

Local preheating, leftward welding technique flame heating each layer

D

Cracks repaired using appropriate electrode

Question 49 1 Marks

What do you call the non - coated electrodes?

A

Row electrode

B

Bare electrode

C

Base electrode

D

Deep penetration electrode

Question 50 1 Marks

Which one of the defect is caused by low current in arc welding?

A

Poracity

B

Under cut

C

Lack of fusion

D

Excessive penetration

Question 51 1 Marks

What is the base for selecting the nozzle size for gas welding of a pipe?

A

Groove angle

B

Welding position

C

Diameter of pipe

D

Pipe wall thickness

Question 52 1 Marks

What flux is to be used for gas welding stainless steel plates?

A

Borox flux

B

Anti - Borox

C

Cryolite and berium chloride

D

Zinc chloride and potassium dichromate paste

Question 53 1 Marks

What is the percentage of carbon in medium carbon steel?

A

0.05% to 0.30%

B

0.05% to 0.8%

C

0.30% to 0.6%

D

0.6% to 1.2%

Question 54 1 Marks

How is the scale and oxide removed from stainless steel weld?

A

Peening

B

Cooling in oil

C

Cooling in sand

D

Heating up to 9500 to 11000C and quenched in water

Question 55 1 Marks

Which one of the below is to control distortion?

A

Use large size electrode

B

Use small size electrode

C

Use few passes with large dia electrode

D

Use more passes with small electrode

Question 56 1 Marks

Which type of filler rod shall contain higher percentage of iron?

A

Ferrous

B

Non - ferrous

C

Alloy type of ferrous metals

D

Alloy type of non - ferrous metals

Question 57 1 Marks

What is the process of heating steel to specific temperature and cooling suddenly?

A

Annealing

B

Hardening

C

Tempering

D

Quenching

Question 58 1 Marks

What is the root run?

A

Backing run

B

The first run is root run

C

The third run is root run

D

The second run is root run

Question 59 1 Marks

What procedure is followed in welding pipe in 5 G position?

A

Rotate pipe and weld vertically

B

Pipe not rotated weld verticality

C

Pipe not rotated and pipe axis 450

D

Pipe welded 12'o clock to 6'o clock downhill

Question 60 1 Marks

Which are the common alloying element of brass?

A

Copper and tin

B

Bismuth and tin

C

Antimony and tin

D

Copper & zinc

Question 61 1 Marks

What is the rule for deciding the length of intermediate tacks?

A

3 to 4 times plate thickness

B

2 to 3 times plate thickness

C

5 times the plate thickness

D

50mm irrespective of plate thickness

Question 62 1 Marks

What does the fourth digit indicate as per AWS electrode coding?

A

Welding current

B

Tensile strength

C

Welding position

D

Type of flux coating

Question 63 1 Marks

What is the main function of the flux coating in electrodes?

A

To prevent rusting

B

To stabilize the arc

C

To control arc temperature

D

To increase welding current

Question 64 1 Marks

Which type of stainless steel is weldable?

A

Nickel type

B

Ferrite type

C

Stabilized type

D

Chromium type

Question 65 1 Marks

What are the four clock positions, in pipe welding?

A

6, 12, 3, 9'o clock points

B

11, 5, 8, 2'o clock points

C

10,4, 1, 7'o clock points

D

9,3, 12, 6'o clock points

Question 66 1 Marks

What thickness of plate, gas welding by forehand technique can be used without edge preparation?

A

Up to 2.5 mm

B

Up to 3.15 mm

C

Up to 4 mm

D

Up to 5 mm

Question 67 1 Marks

What is the purpose of setting root gap?

A

To over some under cut

B

To control distortion

C

To get good penetration

D

Gap get closed due to expansion

Question 68 1 Marks

What should be the bevel angle for edge preparation of 6mm thick pipe welding?

A

30 Degree - 35 Degree

B

40 Degree - 45 Degree

C

60 Degree - 65 Degree

D

70 Degree - 75 Degree

Question 69 1 Marks

Which element filler rod is used to weld stainless steel plates?

A

Osmium

B

Punodium

C

Argentinum

D

Molybdenum, columbiam

Question 70 1 Marks

What flux is used in welding brass?

A

Anti - borax

B

Borax paste

C

Cryolite and berium chloride

D

Zinc chloride and potassium dichromate

Question 71 1 Marks

What is the result of inner cone of flame touching the molten metal while welding?

A

Cause to over lap

B

Cause to back fire

C

Cause to porosity

D

Cause to flame snape out

Question 72 1 Marks

What is the reason for lack of fluidity in molten metal in braze welding?

A

Over heating

B

Improper flame

C

Inadequate preheating

D

Improper cleaning and less use of flux

Question 73 1 Marks

Which type of cast iron possess higher hardness?

A

Grey cast iron

B

White cast iron

C

Nodular cast iron

D

Malleable cast iron

Question 74 1 Marks

Which of the following aluminium alloys consists of 1% iron & silicon?

A

Duralumin

B

Wrought alloy

C

Aluminium cast alloy

D

Commercially pure aluminium

Question 75 1 Marks

What is the effect of expansion and contraction due to heat in welding?

A

Peening

B

Arc blow

C

Distortion

D

Metal force

Question 76 1 Marks

Which size of filler rod should be used to weld 2mm thick MS sheet?

A

1.6 mm

B

2.0 mm

C

2.5 mm

D

3.15 mm

Question 77 1 Marks

How many groups of mild steel pipes are there?

A

Two groups

B

Five groups

C

Four groups

D

Three groups

Question 78 1 Marks

What size of electrode is used to weld 5 mm wall thickness pipe?

A

Dia 2.5 mm

B

Dia 3.15 mm

C

Dia 4.00 mm

D

Dia 5.00 mm

Question 79 1 Marks

What is the purpose of oxygen lever in gas cutting?

A

Pre heat the base metal

B

Push the molten metal

C

Remove the excess metal

D

Release excess oxygen and to push the molten metal

Question 80 1 Marks

Which welding the slag inclusion defect will occur?

A

Manual metal arc welding

B

Tungsten invert gas welding

C

Malattic invert gas welding

D

Oxy - acetylene gas welding

Question 81 1 Marks

What defect will occur due to incorrect tilt of blow pipe?

A

Crater at end

B

Weld porosity

C

Lack of root penetration

D

Under cut in weld joints

Question 82 1 Marks

Why deposited bead is not in uniform size?

A

Incorrect flame setting

B

Wrong angle of blow pipe

C

Wrong angle of filler rod

D

Variation in speed of travel and angle

Question 83 1 Marks

How is the electrode size identified?

A

Length of electrode

B

Thickness of flux coated

C

Diameter (over all) of electrode

D

Diameter of inner core wire

Question 84 1 Marks

What is the purpose of copper coating on mild steel filler rod used in gas welding?

A

Rust proof

B

Water proof

C

Moisture proof

D

Increased filler dia

Question 85 1 Marks

What is the welding defect in base metal gets melted and a groove formed along the toe of the weld?

A

Undercut

B

Blow holes

C

Reinforcementc

D

Lack of penetration

Question 86 1 Marks

What is the purpose of cleaning of sheets before doing gas welding?

A

To avoid over lap

B

To avoid porosity

C

To avoid under cut

D

To Control distortion

Question 87 1 Marks

Which gauging nozzle is selected for rivet head cutting?

A

Bent nozzle with three pre-heating holes

B

Straight nozzle with six pre-heating holes

C

Bent nozzle with six holes

D

Flute cutting straight with six holes

Question 88 1 Marks

What type of gas flame is used to weld 2mm mild steel by brazing method?

A

Neutral flame

B

Carburising flame

C

Oxidising flame

D

Oxy-hydrogen flame

Question 89 1 Marks

What method of heating is done to remove bending distortion of weld joint with wedge shaped area?

A

Spot heating

B

Pipe - needle heating

C

Triangular heating

D

Checker - board heating

Question 90 1 Marks

Which metal in welding process is subjected to ?Weld decay? defect?

A

Brass

B

Copper

C

Mild steel

D

Stainless steel

Question 91 1 Marks

What procedure is to be followed for welding pipes under 6G position?

A

Pipe not rotated weld vertical

B

Rotate pipe and deposit weld vertical

C

Pipe not rotated weld deposit horizontal

D

Pipe not rotated and pipe axis 45 Degree angle deposit weld flat, vertical

Question 92 1 Marks

Which type of arc does not have control on the molten pool?

A

Long arc length

B

Short arc length

C

Normal arc length

D

Too short arc length

Question 93 1 Marks

What is the current range required for 3.15mm dia MS electrode in arc welding?

A

40 - 50 A

B

50 - 60 A

C

70 - 80 A

D

100 - 110 A

Question 94 1 Marks

What benefit we get out of a carburising flame?

A

Suitable for brass, copper welding

B

Suitable for stellite, flame cleaning

C

Suitable for mildsteel, stainless steel

D

Suitable for pure aluminium, cast iron & brass welding

Question 95 1 Marks

What is the 6?o clock position in CW pipe welding refers to in 5G position?

A

Down hand position

B

Horizontal position

C

Over head position

D

Vertical up hill position

Question 96 1 Marks

What is the name of the steel material that is not weldable?

A

High carbon steel

B

Medium carbon steel

C

Austenitic stainless steel

D

Ferrite and martensitic stainless steel

Question 97 1 Marks

Which type of cast iron is soft?

A

Grey cast iron

B

White cast iron

C

Nodular cast iron

D

Malleable cast iron

Question 98 1 Marks

Which size of filler rod should be used to weld 2.5mm thickplates,using nozzle 5 by leftward technique?

A

1.60 mm

B

2.00 mm

C

2.50 mm

D

3.15 mm

Question 99 1 Marks

Which type welding uses a non - ferrous filler with melting point above 450 Degree, than base metal?

A

Brazing

B

Soldering

C

Arc welding

D

Gas welding

Question 100 1 Marks

Which filler rod is used for bronze welding of cast iron, malleable iron and copper?

A

Manganese, Bronze, filler rod

B

Copper, Phosperous, filler rod

C

Copper, Phosperous alloy filler rod

D

Copper, Zinc, Nickel filler rod

Question 101 1 Marks

What type of edge preparation is needed, for gas welding a pipe, with wall thickness 6mm?

A

Single -V

B

Single bevel

C

Square edge with root gap

D

Square edge without root gap

Question 102 1 Marks

What is the main reason, that aluminium is difficult to weld?

A

Less weight

B

Oxide formation

C

High thermal conductivity

D

Better strength weight ratio

Question 103 1 Marks

Which size of CCMS filler rod is to be used for welding plate of 8mm thick with ?V? edge preparation?

A

Dia 3.15 mm

B

Dia 4.0 mm

C

Dia 5.0 mm

D

Dia 6.3 mm

Question 104 1 Marks

What does the letter ?X? indicate in the electrode classification of EB5426 H1 J X?

A

Covered electrode

B

Increase metal recovery

C

Hydrogen controlled electrode

D

Radio graphic quality electrode

Question 105 1 Marks

Which of the following metals have high thermal conductivity?

A

Brass

B

Bronze

C

Copper

D

Aluminium

Question 106 1 Marks

What is the name of short weld made prior to the welding to hold the plates in perfect alignment?

A

Bead weld

B

Tack weld

C

String bead

D

Strong weld

Question 107 1 Marks

What is the cause of porosity in arc welding?

A

Damp electrodes

B

Carbon electrodes

C

Over size electrodes

D

Low hydrogen electrodes

Question 108 1 Marks

Which type of arc length produces poor penetration?

A

Long arc length

B

Short arc length

C

Normal arc length

D

Too long arc length

Question 109 1 Marks

What is the use of intermediate tacks on a weld setting of plates?

A

To reduce the welding run

B

To control defects in weld joint

C

To speed up the welding joint

D

Align and to maintain the position of joint