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# A double acting reciprocating pump having piston area

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## A double acting reciprocating pump having a piston area of 0.1 m2 has a stroke length of 0.30 m. The pump is discharging 2.4 m3 of water per minute at 45 r.p.m. through a height of 10 m. What is the slip of the pump?

### Detailed Solution for Civil Engineering Exam

Given data

Double acting reciprocating pump

A = 0.1m2

L = 0.30m

Q = 2.4 m2/min. N = 45rpm

H = 10 m

Slip of pump

Slip = Qth – Qout

Qth = 2ALN/60

Qth = ( 2 * 0.1 * 0.30 * 45 ) /60

Qth = 0.045 m3/s = 2.7 m3/min

Slip = Qth – Qout

Slip = 2.7 – 2.4 = 0.3 m3/min

0.005 m3/sec

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