Three Phase Induction Motors A four speed squirrel cage induction motor uses______ stator windings. One Four Three Two One Four Three Two 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
Three Phase Induction Motors The air gap between stator and rotor of 3-phase induction motor ranges from ______ 1 cm to 2 cm 0.4 mm to 4 mm 2 cm to 4 cm 4 cm to 6 cm 1 cm to 2 cm 0.4 mm to 4 mm 2 cm to 4 cm 4 cm to 6 cm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In medium sized induction motor, the slip is generally around 0.04 % 0.4 % 14% 4 % 0.04 % 0.4 % 14% 4 % ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the rotor slots are made deeper, rotor resistance is ______ Decreased at starting Increased under running conditions None of the listed here Increased at starting Decreased at starting Increased under running conditions None of the listed here Increased at starting ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The crawling in an induction motor is caused by High loads Improper design of machine Low voltage supply Harmonics developed in the rotor High loads Improper design of machine Low voltage supply Harmonics developed in the rotor ANSWER DOWNLOAD EXAMIANS APP
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