Fluid Mechanics

Question: Bernoulli’s equation accounts for the
[A].

various momentums

[B].

various masses

[C].

different forms of mechanical energy

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: In power law, , then the fluid is
[A].

Newtonian

[B].

dilatant

[C].

thixotropic

[D].

rheopectic

Answer: Option A

Explanation:

No answer description available for this question.

Question: Nominal size of a pipe is an indication of its __________ diameter.
[A].

inner

[B].

outer

[C].

approximate

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: In an incompressible fluid, the density is
[A].

greatly affected by moderate changes in pressure.

[B].

greatly affected only by moderate changes in temperature.

[C].

not affected with moderate change in temperature & pressure.

[D].

sensible to changes in both temperature & pressure.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Check valve is used for __________ flow.
[A].

very precise control of

[B].

unidirectional

[C].

multidirectional

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Cocks are used to control
[A].

water

[B].

any liquid

[C].

solids

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Diaphragm pumps are used to transport
[A].

solids

[B].

liquids

[C].

fluids

[D].

slurries

Answer: Option D

Explanation:

No answer description available for this question.

Question: For the transfer of solution of thick slurry, the pump used is a __________ pump.
[A].

reciprocating

[B].

gear

[C].

diaphragm

[D].

centrifugal

Answer: Option C

Explanation:

No answer description available for this question.

Question: Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will
[A].

increase

[B].

decrease

[C].

remain same

[D].

be quadrupled

Answer: Option A

Explanation:

No answer description available for this question.

Question: A centrifugal pump used to pump water is used to pump an oil with specific gravity of 0.8 at the same rate. The power consumption will now
[A].

increase

[B].

decrease

[C].

remain same

[D].

data insufficient to predict

Answer: Option B

Explanation:

No answer description available for this question.