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Mr. Dubey • 100.64K Points
Coach

Q. Two three phase induction motors A and B are identical in all respects except that motor A has a larger air-gap than motor B. Which motor will have poorer power factor?

  • (A) a
  • (B) b
  • (C) both a and b
  • (D) neither a nor b
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Explanation by: Mr. Dubey
due to larger air gap of motor a, it will need more of exciting current. so the no load angle will increase and power factor will deteriorate.

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