Answer / ramkkumar v.s.

centrifugal pump is a rotodynamic pump where as positive
displacement pumps include reciprocating pump.In centrifugal
pump a rotating rotor and a stationary stator(casing) are
used to increase the fluid pressure.In reciprocating pump,a
piston is used to increase the fluid pressure.

Answer / hiren

in centrifugal pump gives continuous out put and where pdp
gives cyclic output

Answer / abdul hameed

In general:
centrifugal pumps are Flow oriented.
Positive displacement pumps are Pressure oriented.

Answer / vinothkumarbbsva

+ve displacement pump gives const. flow whereas centrifugal pump gives variable flow indirect to pressure...

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