Three Phase Induction Motors Size of a high speed motor as compared to low speed motor for the same HP will be Any of the listed here Smaller Same Bigger Any of the listed here Smaller Same Bigger ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the rotor slots are made deeper, rotor resistance is ______ Increased under running conditions Decreased at starting None of the listed here Increased at starting Increased under running conditions Decreased at starting None of the listed here Increased at starting ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 3 phase induction motor is running at a slip S, then approximate efficiency of the motor is ______ 1+S 1-S None of the listed here S-1 1+S 1-S None of the listed here S-1 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The frequency of rotor current in a 6-pole , 50 Hz, 3-phase induction motor running at 950 rpm is 2.5 Hz 5 Hz 0.05 Hz 1.5 Hz 2.5 Hz 5 Hz 0.05 Hz 1.5 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The synchronous speed of a 3-phase induction motor having 20 poles and connected to a 50 Hz source is _____ 600 rpm 300 rpm 1200 rpm 1000 rpm 600 rpm 300 rpm 1200 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The speed of a squirrel-cage induction motor can be controlled by all of the following except Reducing supply voltage Changing number of poles Changing supply frequency Changing winding resistance Reducing supply voltage Changing number of poles Changing supply frequency Changing winding resistance ANSWER DOWNLOAD EXAMIANS APP
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