Chemical Engineering

Question: Euler’s equation of motion states, that at every point, the
[A].

fluid momentum is constant.

[B].

force per unit mass equals acceleration.

[C].

rate of mass outflow is equal to the rate of mass inflow.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: A centrifugal pump is called a turbine pump, if it is having a
[A].

turbine type impeller.

[B].

vaned diffusion casing.

[C].

rotating vaned volute.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: A hydraulic ram acts as a/an __________ pump.
[A].

centrifugal

[B].

reciprocating

[C].

impulse

[D].

parallel cylinder

Answer: Option C

Explanation:

No answer description available for this question.

Question: Foot valves provided in pumps are __________ valves.
[A].

relief

[B].

three/four way

[C].

pressure reducing

[D].

directional control

Answer: Option D

Explanation:

No answer description available for this question.

Question: In parallel pipe problems, the
[A].

head loss is the same through each pipe.

[B].

discharge is the same through all the pipes.

[C].

total head loss is equal to the sum of the head losses through each pipe.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Centrifugal pump is normally classified on the basis of the
[A].

rpm.

[B].

type of casing.

[C].

impeller blade angle.

[D].

number of blades in impeller.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Design of the casing of centrifugal pump should be such as to minimise the
[A].

back flow through impeller

[B].

loss of kinetic head

[C].

loss of static head

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: A relief valve
[A].

provides back pressure for a cylinder.

[B].

unloads a pump.

[C].

is a directional control valve.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Cavitation in a centrifugal pump can be avoided by keeping the
[A].

inlet pressure high

[B].

outlet pressure low

[C].

inlet pressure low

[D].

outlet pressure high

Answer: Option A

Explanation:

No answer description available for this question.

Question: Acceleration head in a reciprocating pump
[A].

increases the work done during delivery stroke.

[B].

decreases the work done during suction stroke.

[C].

does not change the work requirement of the pump.

[D].

increases the work done during suction stroke.

Answer: Option C

Explanation:

No answer description available for this question.