Three Phase Induction Motors The complete circle diagram of induction motor can be drawn with the help of data found from No-load test All of these Blocked rotor test Stator resistance test No-load test All of these Blocked rotor test Stator resistance test ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have 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 High value for the satisfactory speed control ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of an induction motor runs at Below synchronous speed Synchronous speed Above synchronous speed Any of the above Below synchronous speed Synchronous speed Above synchronous speed Any of the above 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 increased None of the listed here No load current is decreased Leakage reactances are decreased Leakage reactances are increased None of the listed here No load current is decreased Leakage reactances are decreased ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is preferred to a dc motor because it _______ Provides fine speed control Has simple and rugged construction Provides high starting torque None of the listed here Provides fine speed control Has simple and rugged construction Provides high starting torque 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 S/1-S 1/S S 1-S S/1-S 1/S ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS