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For motoring mode, the phase angle between the stator phase voltage and stator phase current should be _______

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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

1 Answer

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Best 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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