Quiz Questions - ITI Quiz - 05-Feb-2026 08:41 AM

Question 1 1 Marks

What are the types of joint in friction welding?

A

T joint

B

Lap joint

C

Butt joint

D

Corner joint

Question 2 1 Marks

Which is adjusted in Electron beam welding to eliminate the defect of porosity?

A

Spot size

B

Deflection

C

Weld penetration

D

Focal position / focus current

Question 3 1 Marks

What is the bore dia of ceramic nozzle to avoid porosity while doing TIG, welding?

A

Small sized

B

Large sized

C

Correct sized

D

Too small sized

Question 4 1 Marks

Which welding machine is to be used for welding of aluminium by TIG welding process?

A

AC welding machine

B

DC welding machine

C

AC DC transformer

D

DC transformer

Question 5 1 Marks

Which welding process is effective for nickel and titanium?

A

Arc welding

B

TIG welding

C

Gas welding

D

MIG welding

Question 6 1 Marks

What type of metals joined in friction welding?

A

Similar metal

B

Dissimilar metal

C

Non metal group

D

Any metal flat type

Question 7 1 Marks

What is the approximate revolution of rotating member in friction welding process, to effect the weld joint?

A

1500 rpm

B

2000 rpm

C

2500 rpm

D

3000 rpm

Question 8 1 Marks

What is the name of the defect in which the weld metal did not melt with base metal in TIG process?

A

Porosity

B

Lack of penetration

C

Lack of fusion

D

Under cut

Question 9 1 Marks

What is the name of the part of TIG torch for holding tungsten electrode?

A

Collet

B

Adaptor

C

Ceramic nozzle

D

Electrode cap

Question 10 1 Marks

Which process can easily weld thin metal?

A

MIG welding

B

Tungsten arc welding

C

Submerged arc welding

D

Manual metal arc welding

Question 11 1 Marks

Which gas is generally used in gas laser type welding?

A

Carbon - di - oxide

B

Neon gas

C

Argon gas

D

Oxygen

Question 12 1 Marks

What is the process of replacing the air in a pipe with argon gas that will not react with the root of the weld?

A

Pouring

B

Purging

C

Pre filling

D

Pool weld

Question 13 1 Marks

What is the source of heat in friction welding process?

A

Chemical heating

B

Electrical heating

C

Mechanical friction

D

Thread heating

Question 14 1 Marks

Which gas is inactive or deficient is active chemical properties in TIG welding?

A

Argon

B

Oxygen

C

Hydrogen

D

Acetylene

Question 15 1 Marks

Which gas is used as inert gas in GTAW for increased speed?

A

Oxygen

B

Helium

C

Acetylene

D

Hydrogen

Question 16 1 Marks

Which gas is chemically inactive with any metals in hot or cold condition in TIG welding?

A

Argon

B

Oxygen

C

Nitrogen

D

Hydrogen

Question 17 1 Marks

Why argon gas is used in welding of stainless steel welding in TIG welding process?

A

Inert gas protects the weld

B

It helps in melting the electrode

C

It prevents porosity

D

It is cheap

Question 18 1 Marks

In which welding process the work pieces are melted and jointed by narrow beam of light source?

A

Electron beam welding

B

Laser beam welding

C

Plasma arc welding

D

Micro plasma arc welding

Question 19 1 Marks

What is the full form of GTAW?

A

Groove tungsten arc welding

B

Grip tungsten arc welding

C

Gas tungsten arc welding

D

Galvanised tungsten arc welding

Question 20 1 Marks

Which type of tungsten electrode is suitable for welding of SS by TIG process with DC?

A

Pure tungsten electrode

B

Cerium tungsten electrode

C

Thoriated tungsten electrode

D

Zirconium tungsten electrode

Question 21 1 Marks

What is the defect caused by high current in TIG welding?

A

Crack

B

Porosity

C

Under cut

D

Lack of penetration

Question 22 1 Marks

Which welding process does not require the supply of external heat?

A

Seam welding

B

Friction welding

C

Flash butt welding

D

Spot welding

Question 23 1 Marks

What is the non-consumable electrode of high melting point used in TIG welding?

A

Carbon electrode

B

Copper electrode

C

Tungsten electrode

D

Aluminium electrode

Question 24 1 Marks

Which type of material friction welding is more suitable, for joining?

A

Similar metal

B

Dissimilar metals

C

Non metal group

D

Any metal flat type

Question 25 1 Marks

How much temperature GTAW process can produce?

A

3000 Degree F

B

3500 Degree F

C

4000 Degree F

D

4500 Degree F

Question 26 1 Marks

What is also referred as a GTAW?

A

TIG welding

B

MIG welding

C

STUD welding

D

GAS welding

Question 27 1 Marks

Which will not be present on the weld bead due to use of shielding gas in TIG welding process?

A

Slag

B

Over lap

C

Under cut

D

Penetration

Question 28 1 Marks

Which part the equipment the electron beam is direct and controlled in an electron beam welding process?

A

Electron gun

B

Electron beam

C

Vacuum chamber

D

Atmosphere

Question 29 1 Marks

What type of metal section can be welded by friction welding?

A

Pipe and round rods

B

Flats and square roof

C

Think sheet

D

Heavy sheet

Question 30 1 Marks

Which of the following properties of metal will not allow the application of friction welding?

A

Metals with high compressive strength

B

Metals with low compressive strength

C

Metals with high tensile strength

D

Metals with low carbon content

Question 31 1 Marks

Which electrode is used in TIG welding process?

A

Zinc electrode

B

Carbon electrode

C

Tungsten

D

Magnesium electrode

Question 32 1 Marks

What devices are provided to reflect the light coming to the ends of ruby rod in laser beam welding?

A

Laser tube

B

Reflecting mirrors

C

Flash lamps

D

Shutter

Question 33 1 Marks

What is the purpose of inert gas used in TIG welding?

A

Contamination in the weld metal

B

To protect the molten metal from the atmospheric contamination

C

To stabilize the Arc

D

To get more spatters

Question 34 1 Marks

Which type of cooling system is used in heavy duty welding operations?

A

Air cooled

B

Oil cooled

C

Gas cooled

D

Water cooled

Question 35 1 Marks

How is the inert gas directed to flow over weld pool, in TIG welding?

A

Through copper nozzle

B

Through brass nozzle

C

Through ceramic nozzle

D

Through metal nozzle

Question 36 1 Marks

How heat effected zone is covered and protected from atmospheric contaminations in GTAW?

A

Argon gas

B

Oxygen gas

C

Fuel gas

D

Active gas

Question 37 1 Marks

How molten metal is shielded from the atmospheric contamination as a blanket in GTAW?

A

By using inert gas

B

By using fuel gas

C

By using supportable gas

D

By using fuel and supportable gas

Question 38 1 Marks

How to avoid burning fast of tungsten in TIG welding process?

A

Long arc length

B

By using DCEP

C

By not using shielding

D

By using contaminated base metal

Question 39 1 Marks

What is the cause for poor weld bead colour in TIG welding process?

A

Too much arc length

B

Excessive heating in torch

C

Tungsten melting into weld puddle

D

Contaminated or improper filler metal

Question 40 1 Marks

What is the defect while TIG welding if the current is too low?

A

Crack

B

Porosity

C

Under cut

D

Lack of fusion

Question 41 1 Marks

What is the purpose of H.F. unit in TIG welding?

A

To produce the AC

B

To change AC to DC

C

To produce power supply

D

To initiate the arc without touching the electrode on the base metal

Question 42 1 Marks

What is principle of friction welding?

A

One member stationary and another rotating type

B

Both members rotates

C

Both members are heated

D

One member is heated and another rotating

Question 43 1 Marks

Which electrode is used to produce arc in GTAW process?

A

M.S electrode

B

Cast iron electrode

C

Tungsten electrode

D

Stainless steel electrode

Question 44 1 Marks

What is right about DCRP electrode TIG welding ?

A

Improper tungsten size

B

Improper shielding gas flow

C

Improperly prepared tungsten

D

Weld circuit polarity is incorrect

Question 45 1 Marks

What is the angle of electrode tip by setting DCEN for SS welding by TIG welding process?

A

50 Degree Centigrade

B

40 Degree Centigrade

C

45 Degree Centigrade

D

60 Degree Centigrade

Question 46 1 Marks

What is the main source of heat to the workpiece in TIG welding?

A

Cable current

B

By Torch

C

By tube

D

By electrode

Question 47 1 Marks

Which is the welding process that maintains electric arc between non-consumable tungsten electrode and the base metal?

A

SAW

B

MMAW

C

MIG

D

TIG

Question 48 1 Marks

What stage of the metal the friction welding is completed by applying high pressure?

A

Fusion stage

B

Non fusion stage

C

Plastic stage

D

Only heating stage

Question 49 1 Marks

What is the use of a little hydrogen added to argon for welding of stainless steel in GTAW process?

A

Improcess heat

B

Improves heat transfer

C

Improves good welding

D

Improves metal property

Question 50 1 Marks

What crystal (rod) is used in laser beam welding?

A

Iron

B

Ruby

C

Copper

D

Stainless steel

Question 51 1 Marks

What is the device used to show the volume of the inert gas allowed to go to the welding torch in TIG welding?

A

Flow meter

B

CO2 regulator

C

Pressure meter

D

Argon regulator