Electric Machine Daily Quiz #22

Pony motor is used for-

1. Starting the synchronous motors
2. Starting the synduction motor
3. In place of synchronous motors
4. None of the above

Application guide for using the motors states-

1. Sync motors are suitable for both high speed and high power.
2. Induction motors are suitable for both high speed and high power.
3. Synchronous motors are suitable for high power and Induction motors are for higher speeds.
4. Synchronous motors are suitable for high speed and Induction motors are for high power.

Which of the power has double frequency than the normal-

1. Excitation power
2. Reluctance power
3. Air gap power
4. Conductive power

Envelope frequency is-

1. Equal to slip frequency
2. Double of slip frequency
3. Half of slip frequency
4. Equal to system frequency

Slip frequency is the reading of the frequency meter connected across-

1. Armature wdg
2. Field wdg
3. Damper wdg
4. Stabilizing wdg