A 120-V motor has mechanical power output of 2.50 hp. It is 90.0% efficient in converting...

 

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A 120-V motor has mechanical power output of 2.50 hp. It is 90.0% efficient in converting power that it takes in by electrical transmission into mechanical power. a) Find the current in the motor. b) Find the energy delivered to the motor by electrical transmission in 3.00 h of operation. c) If the electric company charges $0.110/kWh, what does it cost to run the motor for 3.00 h? A 120-V motor has mechanical power output of 2.50 hp. It is 90.0% efficient in converting power that it takes in by electrical transmission into mechanical power. a) Find the current in the motor. b) Find the energy delivered to the motor by electrical transmission in 3.00 h of operation. c) If the electric company charges $0.110/kWh, what does it cost to run the motor for 3.00 h?

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How to determine the current in A delivered to the motor Assuming this electric m... View the full answer