HR Interview Interview Category

Discharge of a centrifugal pump is (where N = Speed of the pump impeller)

A. directly proportional to N
B. inversely proportional to N
C. directly proportional to N2
D. inversely proportional to N2

Read Solution (Total 1)

As per Affinity Laws:

Speed Constant:

Q1/Q2 = (N1/N2)^1

So, its directly proportional to N.

so option (A) is the answer
8 years agoHelpfull: Yes(0) No(0)

HR Interview Other Question

Geometric similarity is said to exist between the model and the prototype, if both of them

A. have identical velocities
B. are equal in size and shape
C. are identical in shape, but differ only in size
D. have identical forces

In a reaction turbine, the draft tube is used

A. to run the turbine full
B. to prevent air to enter the turbine
C. to increase the head of water by an amount equal to the height of the runner outlet above the tail race
D. to transport water to downstream