Fluid Mechanics

Question: A venturimeter can not be used for the direct measurement of
[A].

datum difference in the stretch of pipeflow

[B].

pressure difference in the flow throughpipeline.

[C].

friction loss in pipe flow.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: In case of end to end connection of two or more pipes in series, the __________ each pipe.
[A].

same rate of flow passes through

[B].

head loss is same through

[C].

rate of flow in each pipe is proportional to the length of

[D].

total flow rate is the sum of flow rate in

Answer: Option A

Explanation:

No answer description available for this question.

Question: The boundary layer thickness at a given section along a flat plate __________ with increasing Reynold’s number.
[A].

increases

[B].

decreases

[C].

remains same

[D].

may increase or decrease

Answer: Option B

Explanation:

No answer description available for this question.

Question: For a given Reynolds number, in a hydraulically smooth pipe, further smoothening __________ the friction factor.
[A].

brings about no further reduction of

[B].

increases

[C].

decreases

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Each term in Bernaulli’s equation represents the __________ of the fluid.
[A].

energy per unit mass

[B].

energy per unit weight

[C].

force per unit mass

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: A gas
[A].

signifies absence of density.

[B].

can resist shearing action.

[C].

is incompressible.

[D].

is a supercritical vapor.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Paper pulp is an example of __________ fluid.
[A].

dilatant

[B].

bingham plastic

[C].

Newtonion

[D].

pseudoplastic

Answer: Option B

Explanation:

No answer description available for this question.

Question: Bernoulli’s equation is not applicable, when the flow is
[A].

irrotational.

[B].

incompressible.

[C].

viscous.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: In case of a __________ the energy of flow is considerably decreased downstream of the machine.
[A].

blower

[B].

turbine

[C].

centrifugal pump

[D].

centrifugal fan

Answer: Option B

Explanation:

No answer description available for this question.

Question: Capillary tube method of viscosity measurement is based on the
[A].

Hagen-Poiseulle’s equation

[B].

Stoke’s law

[C].

Navier-stokes equation

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.