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Calculate the frequency of the stator side of the IM if the value of slip is 0.04 and rotor frequency is 2 Hz.

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Calculate the frequency of the stator side of the IM if the value of slip is 0.04 and rotor frequency is 2 Hz.

(a) 50 Hz

(b) 49 Hz

(c) 45 Hz

(d) 51 Hz

I have been asked this question in semester exam.

My question is from Motors Rating and Heating in portion Rating and Heating of Motors of Electric Drives

1 Answer

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The correct answer is (a) 50 Hz

The best I can explain: The frequency of the stator side is high as compared to the rotor side. The stator frequency is (rotor frequency) ÷ slip = 2÷.04 = 50 Hz.

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