ISRO Electrical Engineering (EE) 2013 - Question 31

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The synchronous speed of a four-pole induction motor operating at 50Hz is

  • A. 25rps
  • B. 1560 rpm
  • C. 3000rpm
  • D. 1000rpm

Answer: A. 25rps

Explanation: Ns = 120×50/4 = 1500 rpm = 25 rps.

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