The increase in meta centric height_________________?

Question: In case of turbulent flow of a Newtonion fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)
[A].

Vavg

[B].

1.2 Vavg

[C].

1.5 Vavg

[D].

1.8 Vavg

Answer: Option B

Explanation:

No answer description available for this question.

Question: A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity
[A].

same as that of A.

[B].

one fourth as that of A.

[C].

twice as that of A.

[D].

four times as that of A.

Answer: Option B

Explanation:

No answer description available for this question.

Question: In case of turbulent flow of fluid through a circular pipe, the
[A].

mean flow velocity is about 0.5 times the maximum velocity.

[B].

velocity profile becomes flatter and flatter with increasing Reynolds number.

[C].

point of maximum instability exists at a distance of 2r/3 from the pipe wall (r = pipe radius).

[D].

skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Check in a centrifugal pump is
[A].

provided in the discharge line.

[B].

generally a globe valve.

[C].

provided to prevent liquid from backing up through the pump when the pump is turned off or accidently stops running.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.