Three Phase Induction Motors The starting torque of an induction motor is maximum when rotor resistance per phase is _____ rotor reactance / phase. None of the listed here Two times Four times Equal to None of the listed here Two times Four times Equal to ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A wound rotor motor is mainly used in applications where ______ Speed control is required High rotor resistance is required during running Less costly motor is not required High starting torque is required Speed control is required High rotor resistance is required during running Less costly motor is not required High starting torque is required ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the supply voltage of a 3-phase induction motor is increased two times, then torque is _______ Increased four times Decreased four times Increased two times Decreased two times Increased four times Decreased four times Increased two times Decreased two times ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors For higher efficiency of 3-phase induction motor, the slip should be 1 Very large As small as possible Large 1 Very large As small as possible Large ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Slip of an induction motor is negative when Magnetic field and rotor rotate in opposite direction None of these Rotor speed is more than the synchronous speed of the field and are in the same direction 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 None of these Rotor speed is more than the synchronous speed of the field and are in the same direction 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 The magnetising current drawn by a 3 phase induction motor is about _______ of full load stator current. 30 to 50% 15 to 20 % 10 to 15% 5% 30 to 50% 15 to 20 % 10 to 15% 5% ANSWER DOWNLOAD EXAMIANS APP
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