AC 3 PHASE INDUCTION MOTOR - Quiz

1) Which speed of 3-phase induction motor runs?

Above synchronous speed Below synchronous speed Equal to synchronous speed At slip speed

2) What is the value of slip at the time of starting of 3 phase induction motor?

Two Three One Zero

3) Which is directly proportional to torque in 3 phase induction motor?

Rotor power factor Stator frequency Number of poles Supply voltage

4) What is phase angle difference between three windings in three phase squirrel cage induction motor?

360 Degree 90 Degree 120 Degree 30 Degree

5) Which material is used to wound outer cage rotor bars of a double squirrelcage induction motor?

Brass Aluminium Copper Silicon steel