Three Phase Induction Motors The low power factor of induction motor is due to Rotor leakage reactance 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 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The maximum torque of a 3-phase induction motor under running conditions is None of the listed here inversely proportional to rotor reactance at standstill Inveresly proportional to supply voltage Directly proportional to rotor resistance None of the listed here inversely proportional to rotor reactance at standstill Inveresly proportional to supply voltage Directly proportional to rotor resistance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the rotor slots are made deeper, rotor resistance is ______ Decreased at starting None of the listed here Increased at starting Increased under running conditions Decreased at starting None of the listed here Increased at starting Increased under running conditions ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The torque developed in the cage induction motor with auto-starter is k/torque with direct switching k2/torque with direct switching K2 × torque with direct switching K × torque with direct switching k/torque with direct switching k2/torque with direct switching K2 × torque with direct switching K × torque with direct switching 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. 5% 15 to 20 % 30 to 50% 10 to 15% 5% 15 to 20 % 30 to 50% 10 to 15% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a double squirrel cage induction motor, the outer cage winding has _______ None of the listed here High resistance High inductance Low resistance None of the listed here High resistance High inductance Low resistance ANSWER DOWNLOAD EXAMIANS APP
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