posted by blast on .
A 120-V motor has mechanical power output of 3.00 hp. It is 94.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Find the energy delivered to the motor by electrical transmission in 2.00 h of operation. Do i divide the power by .94 or time it by .94
Divide by 0.94. It will take about 6% more electrical power than the mechanical power delivered to the output.