Fluid Mechanics

Question: Capacity of a hydraulic accumulator is defined in terms of maximum
[A].

amount of energy stored.

[B].

flow rate through accumulator.

[C].

rate of falling of ram.

[D].

volume available in the cylinder.

Answer: Option A

Explanation:

No answer description available for this question.

Question: A stream line is
[A].

fixed in space in steady flow.

[B].

always the path of particle.

[C].

drawn normal to the velocity vector at every point.

[D].

a line connecting the mid points of flow cross-section.

Answer: Option A

Explanation:

No answer description available for this question.

Question: An equipotential line is __________ to the velocity vector at every point.
[A].

normal

[B].

abnormal

[C].

tangential

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: For steady ideal fluid flow, the Bernoulli’s equation states that the
[A].

velocity is constant along a stream line.

[B].

energy is constant throughout the fluid

[C].

energy is constant along a stream line, but may vary across stream lines

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: During ageing of fluid carrying pipes, the
[A].

pipe becomes smoother with use.

[B].

friction factor increases linearly with time.

[C].

absolute roughness decreases with time.

[D].

absolute roughness increases linearly with time.

Answer: Option D

Explanation:

No answer description available for this question.

Question: The blades of a centrifugal impeller are said to be curved forward, if the __________ of the motion of impeller blades.
[A].

inlet tip of a blade curves in a direction opposite to that

[B].

outlet tip of a blade curves in a direction opposite to that

[C].

inlet tip of a blade is towards the direction

[D].

outlet tip of a blade is towards the direction

Answer: Option D

Explanation:

No answer description available for this question.

Question: A mixed flow centrifugal pump
[A].

employs such an impeller, through which the flow is a combination of radial & axial flow.

[B].

mixes the two fluids before pumping them.

[C].

pumps the two fluids separately and then mixes them.

[D].

employs impellers in both the radial & axial directions.

Answer: Option A

Explanation:

No answer description available for this question.

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.