Electrical Machines
Which of the following induction motor has the highest starting torque?

 Same in both induction motors.
 Slip ring induction motor.
None of these
 Squirrel cage induction motor.

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Electrical Machines
If the applied voltage of a certain transformer is increased by 50% and the frequency is reduced by 50%, the maximum flux density will (assuming that the magnetic circuit remains unsaturated)

 changes to 0.5 times the original value
 changes to 1.5 times the original value
 changes to three times the original value
 remain the same as the original

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