Three Phase Induction Motors The no load speed of an induction motor depends on Both supply frequency and number of poles The supply frequency The maximum flux/poles The number of its poles Both supply frequency and number of poles The supply frequency The maximum flux/poles The number of its poles ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a squirrel cage induction motor, the number of rotor bars is generally ________ Even number None of the listed here Equal to stator poles Prime number Even number None of the listed here Equal to stator poles Prime number ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The low power factor of induction motor is due to Rotor leakage reactance Stator reactance The reactive lagging magnetizing current necessary to generate the magnetic flux All of these Rotor leakage reactance Stator reactance The reactive lagging magnetizing current necessary to generate the magnetic flux All 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 ______ 65% 40% 90% None of the listed here 65% 40% 90% None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Very large 3-phase induction motors (greater than 25 HP) are started _____ By auto transformer starting None of the listed here Direct on line Star-delta starting By auto transformer starting None of the listed here Direct on line Star-delta starting ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a double squirrel cage induction motor, the outer cage winding has _______ Low resistance None of the listed here High resistance High inductance Low resistance None of the listed here High resistance High inductance ANSWER DOWNLOAD EXAMIANS APP
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