Three Phase Induction Motors The torque developed in the cage induction motor with auto-starter is 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 K × torque with direct switching ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The frame of an induction motor is usually made of Bronze Cast iron Aluminium Silicon steel Bronze Cast iron Aluminium Silicon steel ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The maximum torque of a 3-phase induction motor under running conditions is 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 None of the listed here inversely proportional to rotor reactance at standstill Inveresly proportional to supply voltage ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The air gap between stator and rotor of 3-phase induction motor ranges from ______ 1 cm to 2 cm 2 cm to 4 cm 4 cm to 6 cm 0.4 mm to 4 mm 1 cm to 2 cm 2 cm to 4 cm 4 cm to 6 cm 0.4 mm to 4 mm 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 less than the synchronous speed of the field and are in the same direction Rotor speed is more than the synchronous speed of the field and are in the same direction None of these Magnetic field and rotor rotate in opposite direction Rotor speed is less than the synchronous speed of the field and are in the same direction Rotor speed is more than the synchronous speed of the field and are in the same direction None of these ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A high starting torque can be obtained in a 3phase induction motor by _______ Increasing rotor resistance None of the listed here Increasing rotor reactance Decreasing rotor resistance Increasing rotor resistance None of the listed here Increasing rotor reactance Decreasing rotor resistance ANSWER DOWNLOAD EXAMIANS APP
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