Water is pumped between two reservoirs at 4.20 kg/s through a 120 m length pipeline of 50 mm diameter. (Water density is 1000 kg/m3 , viscosity is 0.001 kg/ms and assume surface roughness k= 0.15 mm)...

Water is pumped between two reservoirs at 4.20 kg/s through a 120 m length pipeline of 50 mm diameter.

(Water density is 1000 kg/m3 , viscosity is 0.001 kg/ms and assume surface roughness k= 0.15 mm)

Motor efficiency is 90% and pump efficiency is 80%. From Moody diagram f =0.0065

Determine the power input to the electric motor with the given data for the system shown below?