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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 14
11.
With increase in pump speed, its NPSH requirement
decreases
increases
remains unaltered
can either increase or decrease ; depends on other factors
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
In the Newton's law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.
directly proportional to
inversely proportional to
inversely proportional to the square root of
independent of
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Gear pump
is a positive displacement pump.
is a centrifugal pump.
is a non-positive displacement pump.
can be started with delivery valve closed.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Most of the centrifugal pumps used in chemical plants are usually __________ driven.
steam
diesel engine
electric motor
gas turbine
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the
back flow of fluid in the event of stoppage of pump.
discharge pressure.
flow of liquid during operation of the pump.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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