Question: A mono pump is a __________ pump.
[A].centrifugal
piston
positive acting rotary
a group of vacuum
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Fluid Mechanics
Characteristic curves for a centrifugal pump plotted against its capacity is shown in the diagram. x, y and z denote respectively
Question: Characteristic curves for a centrifugal pump plotted against its capacity is shown in the diagram. x, y and z denote respectively
[A].efficiency, head and B.H.P.
head, efficiency and B.H.P.
B.H.P., efficiency and head
efficiency, B.H.P. and head
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Deformation drag, which is caused by widespread deformation of fluid around the immersed body
Question: Deformation drag, which is caused by widespread deformation of fluid around the immersed body
[A].occurs when NRe is very small.
is primarily a friction drag.
is independent of body length.
depends mainly on cross-sectional shape.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is
Question: In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is
[A].the velocity of sound.
dependent on its cross-sectional area.
dependent on fluid viscosity.
dependent on fluid density.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Laminar flow of a Newtonion fluid ceases to exist, when the Reynolds number exceeds
Question: Laminar flow of a Newtonion fluid ceases to exist, when the Reynolds number exceeds
[A].4000
2100
1500
3000
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
For the production of very high vacuum, a __________ pump is normally used.
Question: For the production of very high vacuum, a __________ pump is normally used.
[A].diffusion
centrifugal
jet ejector
piston
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
For the free settling of a spherical particle through a fluid, the slope of, CD-log NRe , plot is
Question: For the free settling of a spherical particle through a fluid, the slope of, CD-log NRe , plot is
[A].1
-1
0.5
-0.5
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
With increase in the shear rate, the apparent viscosity of pseudoplastic fluids
Question: With increase in the shear rate, the apparent viscosity of pseudoplastic fluids
[A].increases
decreases
remains same
may increase or decrease; depends on the magnitude of shear rate
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the
Question: With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the
[A].velocity increases
pressure decreases
both (a) & (b)
neither (a) nor (b)
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance).
Question: For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance).
[A].V/Vmax = (x/r)1/7
V/Vmax = (r/x)1/7
V/Vmax = (x.r)1/7
none of these
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.