No load test on three phase induction motor
The absolute speed of the magnetic field in space of a 3-phase rotor-fed IM is
A voltmeter gives 120 oscillations per minute when connected to the rotor of an IM. The stator frequency is 50 Hz. The slip of the motor is (a) (b) (c) 4% (d) 5%
Semiclosed slots or totally enclosed slots are used in 3-phase induction motors, essentially to
The rotor power output of 3-phase IM is 15 kW and corresponding slip is 4%. The rotor ohmic loss will be
Which one of the following can be obtained by the equivalent circuit of an electrical machine?