Three Phase Induction Motors If a 4 pole induction motor has a synchronous speed of 1500 rpm, then supply frequency is _____ 60 Hz None of the listed here 25 Hz 50 Hz 60 Hz None of the listed here 25 Hz 50 Hz 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 An induction motor with 1000 r.p.m. speed will have 4 poles 2 poles 6 poles 8 poles 4 poles 2 poles 6 poles 8 poles ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The direction of rotation of field in a 3 phase induction motor depends upon _____ Phase sequence of supply voltage Number of poles Magnitude of supply voltage Supply frequency Phase sequence of supply voltage Number of poles Magnitude of supply voltage Supply frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The crawling in an induction motor is caused by Improper design of machine High loads Harmonics developed in the rotor Low voltage supply Improper design of machine High loads Harmonics developed in the rotor Low voltage supply ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The shape of the torque/slip curve of induction motor is Parabola Hyperbola Rectangular parabola Straight line Parabola Hyperbola Rectangular parabola Straight line ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS