Semester 2: Module 4 - Plasma Arc Cutting and Resistance Welding

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All Type Welder Trades

NAME *

NAME OF THE ITI *

MOBILE NUMBER *

1 : What is the temperature in the weld are a plasma arc welding process? *

2 points

A : 15,000°K to 20,000°K

B : 20,000°K to 30,000°K

C : 30,000°K to 35,000°K

D : 35,000°K to 40,000°K

2 : What material is used to make electrode in spot welding? *

2 points

A : Iron electrode

B : Copper alloy electrodes

C : Silicon electrodes

D : Cast iron electrodes

3 : Which resistance welding machine is provided with an electrode in wheel shape? *

2 points

A : Spot welding

B : Seam welding

C : Projection welding

D : Flash butt welding

4 : What is the name of part marked as ‘X’ in the plasma arc welding? *

2 points

A : Nozzle

B : Outer gascup

C : Electrode

D : Resistor

5 : What is the name of part marked as ‘X’ in the plasma arc welding? *

2 points

A : Nozzle

B : Outer gascup

C : Electrode

D : Resistor

6 : What is the name of part marked as ‘X’ in the spot welding machine? *

2 points

A : Air cylinder

B : Pivot point

C : Rocker arm

D : Electrode

7 : What is the name of part marked as ‘X’ in the spot welding machine? *

2 points

A : Air cylinder

B : Pivot point

C : Rocker arm

D : Electrode

8 : What is the name of part marked as ‘X’ in the spot welding *

2 points

A : Air cylinder

B : Pivot point

C : Rocker arm

D : Electrode

9 : Which welding process effects weld joints under heavy pressure, with supply cut off? *

2 points

A : Flash-butt welding

B : Fusion welding

C : Thermit welding

D : Spot welding

10 : Which resistance welding process produces a bulge at weld joint? *

2 points

A : Flash butt

B : Spot

C : Seam

D : Projection

11 : What is the angle of “off set tip” electrode used in spot welding? *

2 points

A : 30°

B : 40°

C : 50°

D : 60°

12 : Which electrode is movable in spot welding? *

2 points

A : Both moved

B : Both not moved

C : Upper electrode

D : Lower electrode

13 : Which electrode is used in plasma arc welding? *

2 points

A : Cast iron

B : Mild steel

C : Tungsten

D : Stainless steel

14 : Which welding process where a ‘nugget’ is formed in the weld joint? *

2 points

A : Arc welding

B : Seam welding

C : Spot welding

D : Percussion welding

15 : Which welding process is used to weld stainless steel wire mesh and surgical instruments *

3 points

A : Electrode beam welding

B : Electro slag welding

C : Micro plasma welding

D : Plasma welding

16 : Which process is used to cut stainless steel metal? *

2 points

A : Plasma arc cutting process

B : Micro plasma cutting process

C : Key hole plasma process

D : Plasma cutting

17 : Which gas is suitable for welding of stainless steel, nickel alloys by plasma arc welding? *

3 points

A : Argon

B : Helium

C : Hydrogen

D : Neon

18 : Which gas is suitable for welding of carbon steel and titanium by plasma arc welding process? *

3 points

A : Helium

B : CO2

C : Argon

D : Neon

19 : Which is the process to attain full penetration of weld in 10 mm stainless steel? *

2 points

A : Laser beam

B : Micro plasma

C : Electron beam

D : Key hole plasma

20 : What is the current range in micro plasma arc welding process? *

3 points

A : 0.05 to 25 Amps

B : 0.05 to 20 Amps

C : 0.05 to 15 Amps

D : 0.05 to 10 Amps

21 : What is the cause for nugget in spot welding process? *

2 points

A : Sufficient current

B : Incorrect setting electrode

C : Insufficient electrode diameter

D : Insufficient heating of base metal

22 : Which welding process spot welding is belonging? | *

2 points

A : Gas welding

B : Arc welding

C : Resistance welding

D : Jig welding

23 : Which process cuts the stainless steel,carbon steel with the help of high jet velocity? *

2 points

A : Plasma arc process

B : Micro plasma cutting process

C : Key hole plasma process

D : Non-transferred plasma

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