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 None of the listed here (1-S) × rotor input S × rotor input (1+S) × rotor input None of the listed here (1-S) × rotor input 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 0.4 mm to 4 mm 4 cm to 6 cm 1 cm to 2 cm 2 cm to 4 cm 0.4 mm to 4 mm 4 cm to 6 cm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If an induction motor is running at slip S, then rotor output is ______ S × rotor input (1-S) × rotor input (S-1) × rotor input (1+S) × rotor input S × rotor input (1-S) × rotor input (S-1) × rotor input (1+S) × rotor input 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 number of poles Changing supply frequency Reducing supply voltage Changing winding resistance Changing number of poles Changing supply frequency Reducing supply voltage Changing winding resistance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is so called because its operation depends on Eddy currents Hysteresis Self induction Mutual induction Eddy currents Hysteresis Self induction Mutual induction ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is preferred to a dc motor because it _______ Provides high starting torque Has simple and rugged construction None of the listed here Provides fine speed control Provides high starting torque Has simple and rugged construction None of the listed here Provides fine speed control ANSWER DOWNLOAD EXAMIANS APP
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