> What is the power input to the motor ?

What is the power input to the motor ?

Posted at: 2015-01-07 
A compressor motor provides 10 hp to a pump. if the motor is 85% efficient , What is the power input to the motor ?

" So is this power input to the motor?"



No, it is actually the output power of the motor. To get the input power to the motor you just divide it by the efficiency, remembering that the input is greater.

(output power)/(Input power) = efficiency



Input power = (output power)/(efficiency)



Input Watts to this particular motor = [(10hp)*(746W/hp)] /(.85) = 8776.5 Watts

Pin=Pout/eff=10/.85=11.76 hp.

Rick is correct .ASWe need more input.11.6



Power i watts =11.6x746

85% of 10HP = 8.5 HP

A compressor motor provides 10 hp to a pump. if the motor is 85% efficient , What is the power input to the motor ?