If the energy input to an electric motor is 560J/s and 170J/s of energy is transferred to thermal energy when in use, the efficiency of the motor would be
It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.
As given in the problem If the energy input to an electric motor is 560J/s and 170J/s of energy is transferred to thermal energy when in use,
Useful energy = electrical energy - thermal energy lost
=560 J/s - 170 J/s
= 390 J/s
the efficiency of the motor = useful energy /electrical energy ×100
= 390/560 ×100
=69.64%
Thus, the efficiency of the motor would be 69.64%.
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