Three Phase Induction Motors A 3 phase induction motor is ________ Essentially a constant speed motor A variable speed motor Very costly Not easily maintainable Essentially a constant speed motor A variable speed motor Very costly Not easily maintainable ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Slip rings are usually made of Aluminium Carbon Copper Phospor bronze Aluminium Carbon Copper Phospor bronze ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The low power factor of induction motor is due to Rotor leakage reactance Stator reactance The reactive lagging magnetizing current necessary to generate the magnetic flux All of these Rotor leakage reactance Stator reactance The reactive lagging magnetizing current necessary to generate the magnetic flux All of these ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 3 phase induction motor is running at a slip S, then approximate efficiency of the motor is ______ 1+S None of the listed here S-1 1-S 1+S None of the listed here S-1 1-S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor with 1000 r.p.m. speed will have 8 poles 4 poles 6 poles 2 poles 8 poles 4 poles 6 poles 2 poles ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of induction motor Always revolves in the direction of stator flux Insufficient data None of the listed here Always revolves in the direction opposite to stator flux Always revolves in the direction of stator flux Insufficient data None of the listed here Always revolves in the direction opposite to stator flux ANSWER DOWNLOAD EXAMIANS APP
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