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Water at 20 ºC is to be pumped through the system.

The operating data for this motor-driven pump are as follows:

Capacity, m^3/s x 10^4 Developed head, m Efficiency, %

0 36.6 0

10 35.9 19.1

20 34.1 32.9

30 31.2 41.6

40 27.5 42.2

50 23.3 39.7

The inlet pipe to the pump is 0.06 m in diameter commercial steel and 8.5 m in length with a

fanning friction factor of 0.0046. The discharge line consists of 60 m of 0.06 m diameter steel

pipe. All valves are fully open globe valves. Determine the flow rate through the system.