Chemical Engineering Basics

Question: The basic function of the drum in a boiler is to
[A].

act as a storage for feed water.

[B].

act as a storage for steam.

[C].

separate steam from water.

[D].

remove settling impurities from steam.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Function of fusible plug in a boiler is to
[A].

drain out water and sludge from the boiler during repair.

[B].

put off fire in the furnace when water level in the boiler falls to unsafe limit.

[C].

guard the boiler in case of abnormal rise in steam pressure.

[D].

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

Answer: Option B

Explanation:

No answer description available for this question.

Question: Blow off cock is provided in steam boiler to
[A].

guard the boiler in case of abnormal rise in steam pressure.

[B].

drain out water and sludge during its repair.

[C].

regulate the supply of water in boiler.

[D].

put out the fire in the furnace when the water level in the boiler falls to unsafe limit.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Feed check valve is used in steam boilers to
[A].

check the water level in the boiler.

[B].

check the feed water flow rate.

[C].

feed high pressure water to boiler and guard against its backflow through it.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: With increase in pressure, the latent heat of steam
[A].

increases.

[B].

decreases.

[C].

remains unchanged.

[D].

data insufficient; can’t be predicted.

Answer: Option B

Explanation:

No answer description available for this question.

Question: With increase in steam pressure, its specific volume decreases
[A].

rapidly first and then slowly.

[B].

linearly.

[C].

slowly first and then rapidly.

[D].

exponentially.

Answer: Option A

Explanation:

No answer description available for this question.

Question: With increase in pressure, the saturation temperature of steam
[A].

increases rapidly first and then slowly.

[B].

increases slowly first and then rapidly.

[C].

first increases and then decreases.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Out of the following, the rays having the lowest wavelength is the
[A].

radio waves

[B].

ultrasonic waves

[C].

infra red rays

[D].

X-rays

Answer: Option A

Explanation:

No answer description available for this question.

Question: Fatigue strength of a material can not be increased by
[A].

cold working

[B].

hot working

[C].

shot peening

[D].

any of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: An ideal fluid is
[A].

viscous & incompressible.

[B].

non-viscous & compressible.

[C].

non-viscous & incompressible.

[D].

viscous & compressible.

Answer: Option C

Explanation:

No answer description available for this question.