Three Phase Induction Motors An induction motor is preferred to a dc motor because it _______ 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 Provides fine speed control Has simple and rugged construction ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor at stand still resemble those of a transformer whose secondady is _______ None of the listed here Supplying a variable resistive load Open circuited Short circuited None of the listed here Supplying a variable resistive load Open circuited Short circuited ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The direction of rotation of field in a 3 phase induction motor depends upon _____ Number of poles Supply frequency Phase sequence of supply voltage Magnitude of supply voltage Number of poles Supply frequency Phase sequence of supply voltage Magnitude of supply voltage 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 (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 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The no load speed of an induction motor depends on The number of its poles The maximum flux/poles Both supply frequency and number of poles The supply frequency The number of its poles The maximum flux/poles Both supply frequency and number of poles The supply frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The low power factor of induction motor is due to The reactive lagging magnetizing current necessary to generate the magnetic flux All of these Rotor leakage reactance Stator reactance The reactive lagging magnetizing current necessary to generate the magnetic flux All of these Rotor leakage reactance Stator reactance ANSWER DOWNLOAD EXAMIANS APP
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