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Large stiffness coefficient represents ____________

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Large stiffness coefficient represents ____________

(a) motor speed remains practically constant

(b) large fluctuations due to mechanical load

(c) motor speed is variable to changes

(d) no such significance with speed

I had been asked this question in final exam.

This question is from Synchronizing Power and Synchronizing Torque in division Synchronous Machine Stability of Electrical Machines

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Best answer
Right answer is (a) motor speed remains practically constant

Best explanation: Large stiffness represents the tight coupling in the machine and more stability.

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