Three Phase Induction Motors A high starting torque can be obtained in a 3phase induction motor by _______ None of the listed here Increasing rotor resistance Increasing rotor reactance Decreasing rotor resistance None of the listed here Increasing rotor resistance Increasing rotor reactance Decreasing rotor resistance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The starting torque of a 3-phase induction motor is _______ supply voltage. Directly proportional to sqaure of None of the listed here Directly proportional to Independent of Directly proportional to sqaure of None of the listed here Directly proportional to Independent of ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of induction motor Insufficient data Always revolves in the direction of stator flux Always revolves in the direction opposite to stator flux None of the listed here Insufficient data Always revolves in the direction of stator flux Always revolves in the direction opposite to stator flux None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, no load the slip is generally 4% 1.5 % 2% Less than 1% 4% 1.5 % 2% Less than 1% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have High value for the satisfactory speed control The same phase as the rotor e.m.f. The same frequency as the slip frequency Zero frequency High value for the satisfactory speed control The same phase as the rotor e.m.f. The same frequency as the slip frequency Zero frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The low power factor of induction motor is due to Stator reactance All of these The reactive lagging magnetizing current necessary to generate the magnetic flux Rotor leakage reactance Stator reactance All of these The reactive lagging magnetizing current necessary to generate the magnetic flux Rotor leakage reactance ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS