if in a centrifugal pump suction, discharge ,& impeller size constant &

if in a centrifugal pump suction, discharge ,& impeller
size constant & motor rpm increases . What is the effect on
pressure and flow ?

Question Posted / sumit5409

3 Answers
9520 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

if in a centrifugal pump suction, discharge ,& impeller size constant & motor rpm increase..

Answer / wael

the flow as well as the head will be increasing uopn the
increase of the pump RPM

Is This Answer Correct ?

11 Yes

2 No

if in a centrifugal pump suction, discharge ,& impeller size constant & motor rpm increase..

Answer / arul - mz

Mr.Wael pl see any centrifugal pump...The suction will have
a greater dia than discharge...

This is to make the suction side flooded to prevent
cavitation.... and avoiding the pump to run to operate only
for a liquid and not for other fluids like air or vapours...

However if the situation as stated above comes in picture
CAVITATION will surely occur, which will heat the pump...
This will inturn reduce the life of the pump.

Is This Answer Correct ?

3 Yes

0 No

if in a centrifugal pump suction, discharge ,& impeller size constant & motor rpm increase..

Answer / ramesh kansagra

If we increase motor rpm by 10% so flow will increase by
10%. If we increase motor rpm by 10% so head pressure will
increase by 21%.If we increase motor rmp by 10% so power
will increase by 33%.

Is This Answer Correct ?

1 Yes

1 No

Post New Answer

More Mechanical Engineering Interview Questions

Explain the difference between the flight of a plane and a helicopter?

0 Answers

What is the name of vice used in fitting shop?

0 Answers

i am preparing for vsp management trainee technical 2010.can any one send me modelpapers of preliminary written test.

0 Answers

WHY DOES LORRY TANKERS DESINGNED TO BE IN SPHERICAL(CURVED,ROUND), WHY DOESNOT IT DESIGNED TO BE AS SQUARE OR REACTANGLE IN SHAPE.