In Oxyacetylene gas welding, temperature at the inner cone of the flame is around

The oxyacetylene gas used in gas welding produce a flame temperature of

A

1800°C

B

2100°C

C

2400°C

D

3200°C

Oxyacetylene reducing flame is used while carrying out welding on

A

Alloy steel

B

Grey cast iron

C

Mild steel

D

High carbon steel

If the flame of the welding torch is directed towards the progress of welding, then what will you call the welding technique?

A

Forehand welding

B

Flux cored ARC welding

C

Electro slag welding

D

Pulsed spray welding

Most of the oxyacetylene welding is done with

A

Neutral flame

B

Oxidizing flame

C

Carburising flame

D

All of these

The temperature of the inner luminous cone of neutral flame is about

A

1000°C

B

1250°C

C

2100°C

D

3200°C

Actual flame temperature is always lower than the adiabatic flame temperature, because there is

A

No possibility of obtaining complete combustion at high temperature

B

Always loss of heat from the flame

C

Both A & B

D

Neither A nor B

The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen.

A

Lower than

B

Higher than

C

Same as

D

Not related to

The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.

A

Lower than

B

Higher than

C

Same as

D

Not related to

In backhand welding, the angle between the welding rod and the work is ________ as compared to forehand welding.

A

Same

B

Less

C

More

D

None of these

In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.

A

Same

B

Less

C

More

D

None of these

In Oxyacetylene gas welding, temperature at the inner cone of the flame is around

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