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Joining Questions Set 20:

Quiz Mode

Which of the following materials are not suited for cold welding?

steel

brass

gold

silver

Solution:

The _____ generated during friction welding is coherent.

Burr

Molten metal

Flash curl

Fly ash

Solution:

What material are electrodes used in spot welding primarily made of?

Chromium

Tungsten

Aluminum

Copper

Solution:

In which type of welding can the weld be made either from left to right or from right to left?

Backhand

Forehand

Vertical

Horizontal

Solution:

In submerged arc welding, the arc is:

maintained under a blanket flux

submerged in molten metal bath

there is no arc

none of the above

Solution:

In resistance welding, the source of supply is

a low voltage and high current

a low voltage and low current

a high voltage and low current

a high voltage and high current

Solution:

Which effect is not seen in alloys on weldability?

Provision for oxidation to molten metal

Reduction in segregation

Grain refinement

Control of ductile-malleable transformation temperature

Solution:

Which welding process has a higher rate of heating, gas welding or electric arc welding?

Electric arc welding

Gas welding

Gas welding and electric arc welding have equal rate of heating

Cannot be determined

Solution:

During friction welding, why is a low pressure initially applied?

For slowly increasing the surface temperature

For melting the surface coating on the materials

To check weldabilty of two materials

For initial cleaning of the surface

Solution:

In fusion welding, the parts to be welded are:

Heated to a molten state and then allowed to solidify

Heated to a plastic state and then pressure is applied to form a joint

Heated to a temperature below the solidus and welded by alloy formation

None of the above

Joining Questions Set 20:

Which of the following materials are not suited for cold welding?

Solution:

The _____ generated during friction welding is coherent.

Solution:

What material are electrodes used in spot welding primarily made of?

Solution:

In which type of welding can the weld be made either from left to right or from right to left?

Solution:

In submerged arc welding, the arc is:

Solution:

In resistance welding, the source of supply is

Solution:

Which effect is not seen in alloys on weldability?

Solution:

Which welding process has a higher rate of heating, gas welding or electric arc welding?

Solution:

During friction welding, why is a low pressure initially applied?

Solution:

In fusion welding, the parts to be welded are:

Solution:

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