Three Phase Induction Motors A wound rotor motor is mainly used in applications where ______ High rotor resistance is required during running Less costly motor is not required Speed control is required High starting torque is required High rotor resistance is required during running Less costly motor is not required Speed control is required High starting torque is required ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a squirrel cage induction motor, the number of rotor bars is generally ________ Equal to stator poles Prime number Even number None of the listed here Equal to stator poles Prime number Even number None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a double squirrel cage induction motor, the outer cage winding has _______ Low resistance High inductance High resistance None of the listed here Low resistance High inductance High resistance None of the listed here 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 Stator reactance All of these Rotor leakage reactance The reactive lagging magnetizing current necessary to generate the magnetic flux Stator reactance All of these Rotor leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The magnetising current drawn by a 3 phase induction motor is about _______ of full load stator current. 10 to 15% 15 to 20 % 5% 30 to 50% 10 to 15% 15 to 20 % 5% 30 to 50% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The 3- phase induction motor is so designed that the rotor should have ______ under running conditions. High reactance high resistance Low resistance Large slip High reactance high resistance Low resistance Large slip ANSWER DOWNLOAD EXAMIANS APP
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