Three Phase Induction Motors The shape of the torque/slip curve of induction motor is Hyperbola Straight line Parabola Rectangular parabola Hyperbola Straight line Parabola Rectangular parabola ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The approximate efficiency of a 3-phase , 50 Hz, 4 pole induction motor running at 1350 rpm is ______ 40% 65% None of the listed here 90% 40% 65% None of the listed here 90% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is Self starting with low torque Self starting with high torque Self starting with zero torque Non self starting Self starting with low torque Self starting with high torque Self starting with zero torque Non self starting ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The speed of a squirrel-cage induction motor can be controlled by all of the following except Changing winding resistance Reducing supply voltage Changing number of poles Changing supply frequency Changing winding resistance Reducing supply voltage Changing number of poles Changing supply frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 3-phase induction motor is running at slip S, then rotor copper loss is equal to S × rotor input (1-S) × rotor input (1+S) × rotor input None of the listed here S × rotor input (1-S) × rotor input (1+S) × rotor input None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If an induction motor is running at slip S, then rotor output is ______ (S-1) × rotor input S × rotor input (1+S) × rotor input (1-S) × rotor input (S-1) × rotor input S × rotor input (1+S) × rotor input (1-S) × rotor input ANSWER DOWNLOAD EXAMIANS APP
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