Three Phase Induction Motors If a 3-phase induction motor is running at slip S, then rotor copper loss is equal to (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 S × rotor input ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, the ratio of rotor cu loss and rotor input is given by S 1/S S/1-S 1-S S 1/S S/1-S 1-S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor on load resemble those of a transformer whose secondady is _______ Supplying a variable resistive load None of the listed here Short circuited Open circuited Supplying a variable resistive load None of the listed here Short circuited Open circuited ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors For higher efficiency of 3-phase induction motor, the slip should be Large 1 As small as possible Very large Large 1 As small as possible Very large ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The starting torque of a squirrel cage induction motor is Same as full load torque Negligible Slightly more than full load torque Low Same as full load torque Negligible Slightly more than full load torque Low ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is so called because its operation depends on Hysteresis Self induction Eddy currents Mutual induction Hysteresis Self induction Eddy currents Mutual induction ANSWER DOWNLOAD EXAMIANS APP
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