what is its efficiency ?

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A motor operating on 120 V draws a current of 2 A. If the heat is developed in the motor at the rate of 9 cal/s, what is its efficiency ?
15
Nov
A motor operating on 120 V draws a current of 2 A. If the heat is developed in the motor at the rate of 9 cal/s, what is its efficiency ? A motor operating on 120 V draws a current of 2 A. If the heat is developed in the motor at the rate of [...]
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