Three Phase Induction Motors A 3 phase induction motor is ________ Essentially a constant speed motor A variable speed motor Not easily maintainable Very costly Essentially a constant speed motor A variable speed motor Not easily maintainable Very costly ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the air gap between the rotor and stator of a 3-phase induction motor is increased, then_______ Leakage reactances are decreased None of the listed here Leakage reactances are increased No load current is decreased Leakage reactances are decreased None of the listed here Leakage reactances are increased No load current is decreased ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Slip of an induction motor is negative when None of these Rotor speed is more than the synchronous speed of the field and are in the same direction Rotor speed is less 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 more than the synchronous speed of the field and are in the same direction Rotor speed is less 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 For higher efficiency of 3-phase induction motor, the slip should be 1 As small as possible Large Very large 1 As small as possible Large Very large ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a 3 phase induction motor, the rotor speed is _____ the synchronous speed. Equal to Greater than Smaller than None of the listed here Equal to Greater than Smaller than None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase 440 v, 50 Hz induction motor has 4% slip. The frequency of rotor emf will be 20 Hz 200 Hz 50 Hz 2 Hz 20 Hz 200 Hz 50 Hz 2 Hz ANSWER DOWNLOAD EXAMIANS APP
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