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For a slip ring induction motor having leakage impedance of (1+j), the maximum generated emf would be attained at _________

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For a slip ring induction motor having leakage impedance of (1+j), the maximum generated emf would be attained at _________

(a) 135°

(b) 45°

(c) -45°

(d) 0°

The question was asked by my school teacher while I was bunking the class.

The question is from Flux and MMF Phasors and Waves in Induction Motors topic in section Induction Machines of Electrical Machines

1 Answer

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Best answer
Right choice is (a) 135°

Best explanation: Due to leakage reactance there will be a lagging of angle θ in the excitation voltage with the main flux. So the maximum is attained at 90°+θ.

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