Three Phase Induction Motors When a 3-phase induction motor is at no load, the slip is ______ 0.2 1 0.5 Practically zero 0.2 1 0.5 Practically zero ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors 5 H.P., 50Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest? 2880 rpm 1440 rpm 730 rpm 1000 rpm 2880 rpm 1440 rpm 730 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have The same frequency as the slip frequency Zero frequency High value for the satisfactory speed control The same phase as the rotor e.m.f. The same frequency as the slip frequency Zero frequency High value for the satisfactory speed control The same phase as the rotor e.m.f. ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If any two phases for an induction motor are interchanged The motor will not run The motor will burn The motor will run in reverse direction The motor will run at reduced speed The motor will not run The motor will burn The motor will run in reverse direction The motor will run at reduced speed ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The low power factor of induction motor is due to Rotor leakage reactance The reactive lagging magnetizing current necessary to generate the magnetic flux All of these Stator reactance Rotor leakage reactance The reactive lagging magnetizing current necessary to generate the magnetic flux All of these Stator reactance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor at no load resemble those of a transformer whose secondady is _______ Supplying a variable resistive load Open circuited Short-circuited None of the listed here Supplying a variable resistive load Open circuited Short-circuited None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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