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 ______ None of the listed here Is decreased Remains unchanged Is increased None of the listed here Is decreased Remains unchanged Is increased ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, no load the slip is generally 4% 2% 1.5 % Less than 1% 4% 2% 1.5 % Less than 1% 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
Three Phase Induction Motors The speed of a squirrel-cage induction motor can be controlled by all of the following except Changing winding resistance Changing supply frequency Reducing supply voltage Changing number of poles Changing winding resistance Changing supply frequency Reducing supply voltage Changing number of poles ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The advantage of wound rotor motor is that _______ External resistance can be inserted in the rotor circuit It is inexpensive It requires less maintenance None of the listed here External resistance can be inserted in the rotor circuit It is inexpensive It requires less maintenance None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The torque developed by a 3 phase induction motor least depends on Shaft diameter Rotor emf Rotor power factor Rotor current Shaft diameter Rotor emf Rotor power factor Rotor current ANSWER DOWNLOAD EXAMIANS APP
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