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Mark the stable operating point when the load torque shifts from Tl1 to Tl2.

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Mark the stable operating point when the load torque shifts from Tl1 to Tl2.

(a) A

(b) A,B

(c) B,C

(d) A,C

I have been asked this question in unit test.

This intriguing question originated from Operating (or Performance) Characteristics of Induction Motors in chapter Induction Machines of Electrical Machines

1 Answer

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Best answer
The correct choice is (a) A

Easy explanation: For the stable operation, (dTl/dn)>(dTe/dn).

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