Chemical Engineering - Fluid Mechanics

21. 

Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.

A.
B.
C.
D.

Answer: Option B

Explanation:

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22. 

What is the maximum theoretical suction lift (metres) of a reciprocating pump ?

A. 5
B. 10
C. 50
D. 100

Answer: Option B

Explanation:

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23. 

The terminal velocity of a particle moving through a fluid varies as dpn. The value of n is equal to __________ in Stoke's law regime.

A. 1
B. 0.5
C. 2
D. 1.5

Answer: Option C

Explanation:

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24. 

Function of air vessel provided in a reciprocating pump is to

A. reduce discharge fluctuation.
B. reduce the danger of cavitation.
C. avoid the necessity of priming.
D. increase the pump efficiency.

Answer: Option A

Explanation:

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25. 

The Prandtl pitot tube measures the

A. velocity at a point in the flow.
B. pressure at a point.
C. average flow velocity.
D. pressure difference in pipe flow.

Answer: Option A

Explanation:

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