UPSC ESE 2026 Electrical Engineering Paper

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Question : 49 of 150

Marks: +1, -0

A 50 Hz induction motor wound for pole-amplitude modulation has 20 initial poles and the modulating function has 8 poles. At what two speeds will the motor run?

300 rpm and $214 \cdot 286 \text{ rpm}$
400 rpm and 318.524 rpm
150 rpm and $414 \cdot 495 \text{ rpm}$
450 rpm and $115 \cdot 359 \text{ rpm}$

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