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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 5
16.
The ratio of hydrodynamic boundary layer to thermal boundary layer thickness in case of liquid metals is
< 1
1
> 1
2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
The general relationship between speed N, head H, power P and discharge Q for a centrifugal pump is
Q∝N : H∝N2 : P∝N3
Q∝N2 : H∝N3 : P∝N
Q∝N : H∝N3 : P∝N2
Q∝N3 : H∝N : P∝N2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
What is the ratio of the velocity at the axis of the pipe to the mean velocity of flow in case of pipe flow under viscous condition ?
0.5
0.67
1
2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Foot valve provided in the pump is a __________ valve.
direction control
back pressure
relief
pressure reduction
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The discharge co-efficient for an orificemeter does not depend upon the
pipe length.
ratio of pipe diameter to orifice diameter.
type of orifice & the Reynolds number.
pipe diameter.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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