finding efficiency

Question

A water pump requires an input of 0.65hp and delivers 11,900 lbs of water per hour to a house 7ft. above the pump. Find its efficiency. (1hp= 550 ft/s.) Retain the proper number of significant digits in your answer.

Answer 1

Hello Sara,

 

Some data in your question is wrong.

Since the output is more than the input as per calculations.

 

Further 1 HP=550 ft lbs/ sec

 

Not. 550ft/sec