CHEMICAL ENGINEERING

Question: In electrical resistance welding, distortion results from the use of improper
[A].

clamping methods

[B].

electrodes

[C].

current

[D].

filler material

Answer: Option A

Explanation:

No answer description available for this question.

Question: Oxygen cylinders used for autogenous (cutting/welding) purposes are
[A].

seamless & made of steel.

[B].

heat treated before use.

[C].

made by sand casting.

[D].

welded steel cylinders.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which of the following will resist maxi-mum shock & vibration without cracking?
[A].

Grey cast iron

[B].

White cast iron

[C].

Malleable iron

[D].

Graphite

Answer: Option C

Explanation:

No answer description available for this question.

Question: During brazing, if the fluxes are entrapped, it results in the
[A].

distortion of brazed joints.

[B].

cracking of joints.

[C].

presence of gas pockets.

[D].

corrosion.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Filler material used in welding having the lowest melting point out of the following is
[A].

aluminium

[B].

soft solder

[C].

silver solder

[D].

brazing spelter

Answer: Option B

Explanation:

No answer description available for this question.

Question: Joining of thin foils is preferred to be done by
[A].

gamma rays

[B].

X-rays

[C].

microwaves

[D].

gas welding

Answer: Option C

Explanation:

No answer description available for this question.

Question: Chromium molybdenum steel can not be welded using __________ welding.
[A].

thermit

[B].

electrical resistance

[C].

oxy-acetylene

[D].

any of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Cold heading or upsetting is categorised as the __________ process.
[A].

extrusion

[B].

bending

[C].

rolling

[D].

forging

Answer: Option D

Explanation:

No answer description available for this question.

Question: Needles are produced by
[A].

forging

[B].

swaging

[C].

extrusion

[D].

machining

Answer: Option B

Explanation:

No answer description available for this question.

Question: In continuous casting process, graphite moulds are used with a view to providing
[A].

heat resisting medium.

[B].

self lubricating qualities.

[C].

non-wetting surfaces.

[D].

chilling effect.

Answer: Option B

Explanation:

No answer description available for this question.