Fluid Mechanics

Question: Manometers measure the __________ pressure.
[A].

vacuum as well as the atmospheric

[B].

difference in

[C].

absolute

[D].

gage

Answer: Option B

Explanation:

No answer description available for this question.

Question: Existence of boundary layer in fluid flow is because of the
[A].

surface tension

[B].

fluid density

[C].

fluid viscosity

[D].

gravity forces

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ forces act on a particle moving through a stationary fluid.
[A].

Gravity

[B].

Drag

[C].

Buoyant

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: In case of supersonic flow of a fluid through pipeline, the ‘Mach number’ is
[A].

0

[B].

1

[C].

< 1

[D].

> 1

Answer: Option D

Explanation:

No answer description available for this question.

Question: In area meter (e.g., rotameter), with increase in the fluid flow rate, the
[A].

pressure drop increases linearly.

[B].

pressure drop is almost constant.

[C].

area through which fluid flows does not vary.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: A perfect gas
[A].

does not satisfy PV = nRT.

[B].

is incompressible and has zero viscosity.

[C].

has constant specific heat.

[D].

can’t develop shear stresses.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Non-colloidal solution is an example of the __________ fluid.
[A].

non-Newtonion

[B].

Newtonion

[C].

dilatent

[D].

pseudoplastic

Answer: Option B

Explanation:

No answer description available for this question.

Question: Absolute viscosity of a fluid is a function of the __________ of the fluid.
[A].

motion

[B].

pressure & temperature

[C].

shearing stress

[D].

both(b)&(c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: f = 16/NRe, is valid for
[A].

turbulent flow

[B].

laminar flow through an open channel

[C].

steady flow

[D].

none of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: Foot valve provided in the pump is a __________ valve.
[A].

direction control

[B].

back pressure

[C].

relief

[D].

pressure reduction

Answer: Option B

Explanation:

No answer description available for this question.