Three Phase Induction Motors Slip of an induction motor is negative when Magnetic field and rotor rotate in opposite direction Rotor speed is less than the synchronous speed of the field and are in the same direction Rotor speed is more than the synchronous speed of the field and are in the same direction None of these Magnetic field and rotor rotate in opposite direction Rotor speed is less than the synchronous speed of the field and are in the same direction Rotor speed is more than the synchronous speed of the field and are in the same direction None of these ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors As load on an induction motor goes on increasing Its power factor goes on increasing even after full load Its power factor goes on increasing up to full load and then it falls again Its power factor goes on decreasing Its power factor remains constant Its power factor goes on increasing even after full load Its power factor goes on increasing up to full load and then it falls again Its power factor goes on decreasing Its power factor remains constant ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors DOL starting of induction motors is usually restricted to Low horsepower motors High speed motors High horsepower motors Variable speed motors Low horsepower motors High speed motors High horsepower motors Variable speed motors ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In induction motor, percentage slip depends on Copper losses in motor None of these Supply voltage Supply frequency Copper losses in motor None of these Supply voltage Supply frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Reduced voltage starter can be used with Squirrel cage induction motor only but not with slip ring motor Slip ring motor only but not with squirrel cage induction motor Squirrel cage as well as slip ring induction motor None of these Squirrel cage induction motor only but not with slip ring motor Slip ring motor only but not with squirrel cage induction motor Squirrel cage as well as slip ring induction motor None of these 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 ______ 90% 40% 65% None of the listed here 90% 40% 65% None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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