Three Phase Induction Motors The advantage of wound rotor motor is that _______ None of the listed here It is inexpensive It requires less maintenance External resistance can be inserted in the rotor circuit None of the listed here It is inexpensive It requires less maintenance External resistance can be inserted in the rotor circuit 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 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 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Slip of an induction motor is negative when Magnetic field and rotor rotate in opposite direction Rotor speed is more than the synchronous speed of the field and are in the same direction None of these Rotor speed is less than the synchronous speed of the field and are in the same direction Magnetic field and rotor rotate in opposite direction Rotor speed is more than the synchronous speed of the field and are in the same direction None of these Rotor speed is less than the synchronous speed of the field and are in the same direction ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 4 pole induction motor has a synchronous speed of 1500 rpm, then supply frequency is _____ None of the listed here 60 Hz 25 Hz 50 Hz None of the listed here 60 Hz 25 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is so called because its operation depends on Self induction Mutual induction Eddy currents Hysteresis Self induction Mutual induction Eddy currents Hysteresis 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 becomes zero Decreases the rotor current Rotor current remains same Increases the rotor current Rotor current becomes zero Decreases the rotor current Rotor current remains same Increases the rotor current ANSWER DOWNLOAD EXAMIANS APP
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