Question: Creeping flow around a sphere is defined, when particle Reynolds number is
[A].< 2100
< 0.1
> 2.5
< 500
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Fluid Mechanics
Equivalent length of a pipe fitting is
Question: Equivalent length of a pipe fitting is
[A].dependent on Reynolds number.
independent of Reynolds number.
dependent on the length of the pipe.
none of these.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
At a constant speed of the centrifugal pump . it __________ the impeller diameter.
Question: At a constant speed of the centrifugal pump . it __________ the impeller diameter.
[A].capacity varies directly with
head varies as the square of
horsepower varies as the cube of
all (a), (b) and (c)
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
With a constant diameter impeller of a centrifugal pump
Question: With a constant diameter impeller of a centrifugal pump
[A].its capacity varies directly as the square of speed.
head varies as the square of speed.
horsepower input varies as the square of speed.
head varies as the speed.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
A centrifugal pump designed to pump water is employed to pump a more viscous oil. In the later case, the pump
Question: A centrifugal pump designed to pump water is employed to pump a more viscous oil. In the later case, the pump
[A].develops a lower head.
capacity is reduced.
requires more power.
all (a), (b) and (c).
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Mass velocity is independent of temperature & pressure, when the flow is
Question: Mass velocity is independent of temperature & pressure, when the flow is
[A].unsteady through unchanged cross-section.
steady through changing cross-section.
steady and the cross-section is unchanged.
unsteady and the cross-section is changed.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Cavitation in a centrifugal pump results from
Question: Cavitation in a centrifugal pump results from
[A].high discharge pressure
low barometric pressure
high discharge velocity
high discharge rate
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Check in a centrifugal pump is
Question: Check in a centrifugal pump is
[A].provided in the discharge line.
generally a globe valve.
provided to prevent liquid from backing up through the pump when the pump is turned off or accidently stops running.
all (a), (b) and (c).
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Fanning friction factor equation applies to the __________ fluid flow.
Question: Fanning friction factor equation applies to the __________ fluid flow.
[A].non-isothermal condition of
compressible
both (a) and (b)
neither (a) nor (b)
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
With increase in the schedule number of a pipe of a particular nominal size, the
Question: With increase in the schedule number of a pipe of a particular nominal size, the
[A].wall thickness also increases.
I.D. of the pipe decreases.
O.D. of the pipe remains constant.
all (a), (b) and (c)
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.