mcqs

1. Electromagnetic torque in rotating electrical machinery is present when ________

1. Both stator and rotor windings carry current
2. Air gap is uniform
3. Stator winding alone carries current
4. Rotor winding alone carries current

2. In a rotating electrical machine with 2 poles on the stator and 4 poles on the rotor, spaced equally, the net electromagnetic torque developed is ____________

1.  maximum
2.  zero or no torque is developed
3. minimum
4. none of the mentioned