Chemical Engineering - Fluid Mechanics

1. 

Two dimensional stream function

A. relates velocity and pressure.
B. is constant along a stream line.
C. is constant along an equipotential surface.
D. none of these.

Answer: Option B

Explanation:

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2. 

What causes cavitation in centrifugal pump ?

A. High suction pressure
B. Low barometric pressure
C. Low suction pressure
D. High suction velocity

Answer: Option C

Explanation:

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3. 

Draining of shallow pits or sump is done by a sump pump, which is a __________ pump.

A. single stage vertical
B. centrifugal
C. plunger
D. diffuser

Answer: Option A

Explanation:

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4. 

A hydraulic ram acts as a/an __________ pump.

A. centrifugal
B. reciprocating
C. impulse
D. parallel cylinder

Answer: Option C

Explanation:

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5. 

The ratio of average fluid velocity to the maximum velocity in case of laminar flow of a Newtonion fluid in a circular pipe is

A. 0.5
B. 1
C. 2
D. 0.66

Answer: Option A

Explanation:

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