Chemical Engineering Basics

Question: Boiler tube size is specified by its thickness and __________ diameter.
[A].

outside

[B].

inside

[C].

mean

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: A material subjected __________ must have high resilience.
[A].

shockloading

[B].

vibration

[C].

fatigue

[D].

tension

Answer: Option A

Explanation:

No answer description available for this question.

Question: Batch process is preferred over continuous process, when the
[A].

product yields and quality can not be achieved in continuous process, because of long residence time.

[B].

sales demand of product is not steady.

[C].

same equipment can not be used for several processes of the same nature.

[D].

all (a), (b) & (c)

Answer: Option B

Explanation:

No answer description available for this question.

Question: Large diameter shafts are manufactured by
[A].

hot rolling.

[B].

cold drawing.

[C].

casting and turning to size.

[D].

forging and turning to size.

Answer: Option D

Explanation:

No answer description available for this question.

Question: The basic constituent of vegetable oils is
[A].

triglyceride

[B].

fatty acids

[C].

fatty alcohol

[D].

mono esters

Answer: Option B

Explanation:

No answer description available for this question.

Question: Fatigue limit of a material should not be increased by
[A].

shot peening

[B].

surface decarburisation

[C].

understressing

[D].

cold working

Answer: Option B

Explanation:

No answer description available for this question.

Question: The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.
[A].

tension

[B].

shear

[C].

compression

[D].

bending & tension

Answer: Option A

Explanation:

No answer description available for this question.

Question: Endurance is a measure of fatigue limit of a metal. Fatigue crack in nitrided machine parts originates
[A].

at the surface.

[B].

within the core.

[C].

just below the surface.

[D].

anywhere on the surface.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails
[A].

below the yield point.

[B].

above the yield point.

[C].

below the elastic limit.

[D].

at the elastic limit.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Machine tool bodies are usually made of
[A].

cast iron

[B].

mild steel

[C].

wrought iron

[D].

copper alloys

Answer: Option A

Explanation:

No answer description available for this question.