AC 3 PHASE INDUCTION MOTOR - Quiz

1) Which speed control method of 3 f motor is used only induction motor supplied by generator?

Casecade operation method By changing the number of stator poles By injection Emf in rotor circuit By changing the supplied voltage

2) Which method of speed control is only applicable for 3 phase slipring induction motor?

Casecade operation method Rotor rheostat speed control Changing the applied frequency method Changing the number of stator poles method

3) Which method of speed control of 3 phase induction motor above and below normal speed can be obtained?

By rotor rheostat control By changing applied voltage By injecting EMF in rotor circuit By changing the number of stator poles

4) Which method of speed control of 3 phase induction motor only two speeds can be obtained?

By cascade operation By changing the applied voltage By changing the supply frequency By changing the number of stator poles

5) Which method of speed control can be obtained from rotor side of 3 phase induction motor?

Voltage control Cascade operation Pole changing control Supply frequency control