Three Phase Induction Motors As load on an induction motor goes on increasing Its power factor goes on decreasing Its power factor remains constant Its power factor goes on increasing up to full load and then it falls again Its power factor goes on increasing even after full load Its power factor goes on decreasing Its power factor remains constant Its power factor goes on increasing up to full load and then it falls again Its power factor goes on increasing even after full load ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The starting torque of a squirrel cage induction motor is Same as full load torque Low Slightly more than full load torque Negligible Same as full load torque Low Slightly more than full load torque Negligible ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is preferred to a dc motor because it _______ None of the listed here Has simple and rugged construction Provides high starting torque Provides fine speed control None of the listed here Has simple and rugged construction Provides high starting torque Provides fine speed control 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% 90% None of the listed here 40% 65% 90% None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The efficiency of an induction motor can be expected to be nearly 60 to 90% 95 to 98 % 80 to 90% 99% 60 to 90% 95 to 98 % 80 to 90% 99% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the air gap between the rotor and stator of a 3-phase induction motor is increased, then_______ Leakage reactances are decreased None of the listed here No load current is decreased Leakage reactances are increased Leakage reactances are decreased None of the listed here No load current is decreased Leakage reactances are increased ANSWER DOWNLOAD EXAMIANS APP
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