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For motoring mode, the phase angle between the stator phase voltage and stator phase current should be _______(a) < 90°(b) > 90°(c) < 40°(d) 180°This question was posed to me during an interview for a job.The query is from Induction Motors topic in portion Braking of DC Motors & Induction Motors of Electric Drives |
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Answer» CORRECT CHOICE is (a) < 90° Explanation: For motoring mode, the phase angle between the stator phase voltage and stator phase current should be < 90°. The rotor magnetic FIELD tries to catch up the stator magnetic field. |
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