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The ratio of the rotor copper loss and air gap power is _______

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in Electric Drives by (99.8k points)
The ratio of the rotor copper loss and air gap power is _______

(a) s

(b) 1-s

(c) 1+s

(d) 0

I have been asked this question during an interview.

Question is taken from Induction Motors in section Braking of DC Motors & Induction Motors of Electric Drives

1 Answer

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Best answer
The correct answer is (a) s

Explanation: The ratio of the rotor copper loss and air gap power is s. The air gap power in the induction motor is Pg and the rotor copper loss is s×Pg. The ratio is s.

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