Three Phase Induction Motors A 3 phase 440 v, 50 Hz induction motor has 4% slip. The frequency of rotor emf will be 50 Hz 20 Hz 2 Hz 200 Hz 50 Hz 20 Hz 2 Hz 200 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the frequency of 3-phase supply to the stator of a 3-phase induction motor is increased, then synchronous speed ______ Is decreased None of the listed here Is increased Remains unchanged Is decreased None of the listed here Is increased Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The advantage of wound rotor motor is that _______ It is inexpensive None of the listed here External resistance can be inserted in the rotor circuit It requires less maintenance It is inexpensive None of the listed here External resistance can be inserted in the rotor circuit It requires less maintenance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, no load the slip is generally 4% 2% Less than 1% 1.5 % 4% 2% Less than 1% 1.5 % ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The maximum torque of a 3-phase induction motor under running conditions is Directly proportional to rotor resistance inversely proportional to rotor reactance at standstill Inveresly proportional to supply voltage None of the listed here Directly proportional to rotor resistance inversely proportional to rotor reactance at standstill Inveresly proportional to supply voltage None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, the ratio of rotor cu loss and rotor input is given by S 1-S 1/S S/1-S S 1-S 1/S S/1-S ANSWER DOWNLOAD EXAMIANS APP
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