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The mechanical power output of an electric motor is 2.60 hp. The motor is connected to a 120 V source and is 84.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Determine the following.
(a)
current (in A) delivered to the motor
 A
(b)
energy (in MJ) delivered to the motor by electrical transmission in 3.80 h of operation
 MJ
(c)
the cost to run the motor (in dollars) for 3.80 h, if the electric company charges $0.110/kWh
**Problem: Electric Motor Power Calculations** The mechanical power output of an electric motor is **2.60 hp**. The motor is connected to a **120 V** source and is **84.0%** efficient in converting the power it takes in by electrical transmission into mechanical power. Determine the following: (a) **Current (in A) delivered to the motor** - **Answer:** _______ A (b) **Energy (in MJ) delivered to the motor by electrical transmission in 3.80 h of operation** - **Answer:** _______ MJ (c) **The cost to run the motor (in dollars) for 3.80 h, if the electric company charges $0.110/kWh** - **Answer:** $_______
Transcribed Image Text:**Problem: Electric Motor Power Calculations** The mechanical power output of an electric motor is **2.60 hp**. The motor is connected to a **120 V** source and is **84.0%** efficient in converting the power it takes in by electrical transmission into mechanical power. Determine the following: (a) **Current (in A) delivered to the motor** - **Answer:** _______ A (b) **Energy (in MJ) delivered to the motor by electrical transmission in 3.80 h of operation** - **Answer:** _______ MJ (c) **The cost to run the motor (in dollars) for 3.80 h, if the electric company charges $0.110/kWh** - **Answer:** $_______
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