Electrical Machines
In salient pole synchronous machine, if direct axis reactance and quadrature axis reactance is equal, then power developed due to reluctance is

 zero
 any of the above
 infinite value
 maximum

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Electrical Machines
In the 3-phase induction motor, the resultant flux is of a constant nature and is

 3 times maximum value of flux due to any phase
 3/2 times maximum value of flux due to any phase
 equal to φm, where φm is the maximum flux due to any phase
 1/2 times maximum value of flux due to any phase

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