Three Phase Induction Motors An induction motor is so called because its operation depends on Eddy currents Self induction Mutual induction Hysteresis Eddy currents Self induction Mutual induction Hysteresis 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% 5% 15 to 20 % 30 to 50% 10 to 15% 5% 15 to 20 % 30 to 50% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors As load on an induction motor goes on increasing Its power factor remains constant Its power factor goes on decreasing Its power factor goes on increasing even after full load Its power factor goes on increasing up to full load and then it falls again Its power factor remains constant Its power factor goes on decreasing Its power factor goes on increasing even after full load Its power factor goes on increasing up to full load and then it falls again ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Slip rings are usually made of Carbon Copper Phospor bronze Aluminium Carbon Copper Phospor bronze Aluminium ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Insertion of resistance in the rotor of an induction motor to develop a given torque Rotor current remains same Decreases the rotor current Rotor current becomes zero Increases the rotor current Rotor current remains same Decreases the rotor current Rotor current becomes zero Increases the rotor current ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The low power factor of induction motor is due to 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 Stator reactance The reactive lagging magnetizing current necessary to generate the magnetic flux ANSWER DOWNLOAD EXAMIANS APP
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