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Joining Questions Set 1:

Quiz Mode

In gas welding, the combustion takes place by mixing oxygen with

CO2

C2H2

Solution:

In resistance welding, filler metal is:

always used

generally used

occasionally used

never used

Solution:

In thermite welding, the mass ratio of iron oxide and aluminum oxide is

1 : 1

2 : 1

3 : 1

4 : 1

Solution:

In friction welding, the heat required for welding is obtained from:

inertia of flywheel

friction

none of the above

either of the above

Solution:

Edge preparation is done in welding to:

Improve penetration

Reduce welding time

Reduce heat affected zone

Stabilize the molten metal pool

Solution:

In liquid state welding, the joint is formed due to fusion of:

base metals only

filler metal only

both filler and base metals

none of the above

Solution:

The selection of welding electrodes depends upon:

The thickness of the metal to be joined

The type of metal to be joined

All of the above

Position of welding

Strength of joint

Solution:

In a balanced or neutral flame, the intermediate flame zone:

exits as a secondary luminous zone

does not exist

exits and contains some free oxygen

exits but is not distinguished

Solution:

In thermite welding, the thermite reaction is started by

friction lighter for safety

electric lighter for safety

all of the above

burning of magnesium ribbon dipped in the mixture

Solution:

The main characteristics of laser beam welding include:

Vacuum is not required, unlike in electron beam welding

The process can be easily automated

The process does not generate X-rays

All of the above

Joining Questions Set 1:

In gas welding, the combustion takes place by mixing oxygen with

Solution:

In resistance welding, filler metal is:

Solution:

In thermite welding, the mass ratio of iron oxide and aluminum oxide is

Solution:

In friction welding, the heat required for welding is obtained from:

Solution:

Edge preparation is done in welding to:

Solution:

In liquid state welding, the joint is formed due to fusion of:

Solution:

The selection of welding electrodes depends upon:

Solution:

In a balanced or neutral flame, the intermediate flame zone:

Solution:

In thermite welding, the thermite reaction is started by

Solution:

The main characteristics of laser beam welding include:

Solution:

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