Question: In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).
[A].

mechanical

[B].

overall

[C].

volumetric

[D].

impeller

Answer: Option A

Explanation:

No answer description available for this question.

Question: Good design of the casing of a centrifugal pump aims at minimising the
[A].

cavitation

[B].

frictional losses

[C].

kinetic energy loss

[D].

static head

Answer: Option C

Explanation:

No answer description available for this question.

Question: Friction factor for fluid flow in pipe does not depend upon the
[A].

pipe length.

[B].

pipe roughness.

[C].

fluid density & viscosity.

[D].

mass flow rate of fluid.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Internal energy of a gas obeying Vanderwall’s equation of state, , depends upon its
[A].

pressure & temperature.

[B].

pressure & specific volume.

[C].

temperature & specific volume.

[D].

temperature only.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Joule-Thomson co-efficient is the ratio of
[A].

pressure change to temperature change occuring during adiabatic compression of a gas.

[B].

pressure change to temperature change occuring during adiabatic throttling of a gas.

[C].

temperature change to pressure change occuring during adiabatic compression of a gas.

[D].

temperature change to pressure change occuring during adiabatic throttling of a gas.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Increase in the entropy of a system represents the
[A].

degradation of energy.

[B].

decrease in system pressure.

[C].

increase in the availability of energy.

[D].

increase in the temperature.

Answer: Option A

Explanation:

No answer description available for this question.

Question: In case of compression of one kg of air, the work done will be the least, when the value of polytropic index ‘n’ is
[A].

1

[B].

1.4

[C].

1.5

[D].

Y = Cp/Cv

Answer: Option A

Explanation:

No answer description available for this question.

Question: An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section.
[A].

adiabatic

[B].

isothermal

[C].

isentropic

[D].

isochoric

Answer: Option B

Explanation:

No answer description available for this question.

Question: Carnot cycle is also termed as the constant __________ cycle in thermodynamics.
[A].

entropy

[B].

pressure

[C].

volume

[D].

heat

Answer: Option D

Explanation:

No answer description available for this question.