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 increased None of the listed here Remains unchanged Is decreased Is increased None of the listed here Remains unchanged Is decreased ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is preferred to a dc motor because it _______ Provides high starting torque None of the listed here Has simple and rugged construction Provides fine speed control Provides high starting torque None of the listed here Has simple and rugged construction Provides fine speed control ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The shaft of an induction motor is made of Carbon steel Cast iron Stainless steel High speed steel Carbon steel Cast iron Stainless steel High speed steel ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is so called because its operation depends on Mutual induction Self induction Eddy currents Hysteresis Mutual induction Self induction Eddy currents Hysteresis ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 3-phase induction motor is running at slip S, then rotor copper loss is equal to (1+S) × rotor input S × rotor input None of the listed here (1-S) × rotor input (1+S) × rotor input S × rotor input None of the listed here (1-S) × rotor input ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The low power factor of induction motor is due to Stator reactance The reactive lagging magnetizing current necessary to generate the magnetic flux Rotor leakage reactance All of these Stator reactance The reactive lagging magnetizing current necessary to generate the magnetic flux Rotor leakage reactance All of these ANSWER DOWNLOAD EXAMIANS APP
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