Steel is welded using the __________ flame.

The brass and bronze are welded by _________ flame.

A

Neutral

B

Oxidizing

C

Carburising

D

All of these

Chromium molybdenum steel can not be welded using __________ welding.

A

Thermit

B

Electrical resistance

C

Oxy-acetylene

D

Any of these

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

Stainless steel is welded using

A

oxy-acetylene flame

B

oxy-hydrogen flame

C

arc welding

D

inert gas arc welding

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

Stainless steel is welded with difficulty because of

A

Its high melting temperature

B

Chances of cracking

C

Oxide film formation

D

Chromium carbide formation

Titanium can be easily welded using __________ welding.

A

Submerged arc

B

TIG

C

Shielded metal arc

D

Electroslag

The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.

A

0.5

B

3

C

10

D

25

Titanium alloys are welded using the Following process:

A

TIG welding

B

Submerged arc welding

C

Butt welding

D

Electron beam welding

Steel is welded using the __________ flame.

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