Chemical Engineering - Fluid Mechanics

1. 

__________ is an example of axial flow impeller.

A. Paddle
B. Turbine
C. Propeller
D. all (a), (b) and(c)

Answer: Option C

Explanation:

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2. 

Froude number is not a factor

A. for Reynolds number greater than 300.
B. when there is no vortex formation.
C. for unbaffled tank.
D. none of these.

Answer: Option B

Explanation:

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3. 

If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor).

A. Q = Q1 + Q2 + Q3
B. V1 = V2 = V3
C. Q1 = Q2 = Q3
D. f = f1 + f2 + f3

Answer: Option A

Explanation:

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4. 

Horsepower requirement for given pump capacity depends upon the

A. specific gravity of the liquid
B. suction lift
C. discharge head
D. all (a), (b) and (c)

Answer: Option D

Explanation:

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5. 

Bernoulli's equation accounts for the

A. various momentums
B. various masses
C. different forms of mechanical energy
D. none of these

Answer: Option C

Explanation:

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