Three Phase Induction Motors The starting torque of an induction motor is maximum when rotor resistance per phase is _____ rotor reactance / phase. Four times None of the listed here Equal to Two times Four times None of the listed here Equal to Two times 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 supply frequency Changing number of poles Changing winding resistance Reducing supply voltage Changing supply frequency Changing number of poles Changing winding resistance Reducing supply voltage ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The power factor of an induction motor under no load conditions will be closer to 0.5 leading Unity 0.2 leading 0.2 lagging 0.5 leading Unity 0.2 leading 0.2 lagging ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The efficiency of an induction motor can be expected to be nearly 80 to 90% 95 to 98 % 99% 60 to 90% 80 to 90% 95 to 98 % 99% 60 to 90% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The frame of an induction motor is usually made of Aluminium Bronze Silicon steel Cast iron Aluminium Bronze Silicon steel Cast iron 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
EXAMIANS