Three Phase Induction Motors A 3 phase 440 v, 50 Hz induction motor has 4% slip. The frequency of rotor emf will be 200 Hz 50 Hz 2 Hz 20 Hz 200 Hz 50 Hz 2 Hz 20 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Slip of an induction motor is negative when None of these Rotor speed is less than the synchronous speed of the field and are in the same direction Rotor speed is more than the synchronous speed of the field and are in the same direction Magnetic field and rotor rotate in opposite direction None of these Rotor speed is less than the synchronous speed of the field and are in the same direction Rotor speed is more than the synchronous speed of the field and are in the same direction Magnetic field and rotor rotate in opposite direction ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 3 phase induction motor is running at a slip S, then approximate efficiency of the motor is ______ None of the listed here 1-S S-1 1+S None of the listed here 1-S S-1 1+S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The 3- phase induction motor is so designed that the rotor should have ______ under running conditions. High reactance Low resistance high resistance Large slip High reactance Low resistance high resistance Large slip ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In the circle diagram for induction motor, the diameter of the circle represents Running torque Rotor current Slip Line voltage Running torque Rotor current Slip Line voltage ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors For higher efficiency of 3-phase induction motor, the slip should be 1 Large Very large As small as possible 1 Large Very large As small as possible ANSWER DOWNLOAD EXAMIANS APP
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