Three Phase Induction Motors Friction and windage loss of a 3 phase induction motor are Remains the same at all loads Minimum at no load Maximum at no load None of the listed here Remains the same at all loads Minimum at no load Maximum at no load None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase 440 v, 50 Hz induction motor has 4% slip. The frequency of rotor emf will be 200 Hz 20 Hz 50 Hz 2 Hz 200 Hz 20 Hz 50 Hz 2 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have Zero frequency High value for the satisfactory speed control The same frequency as the slip frequency The same phase as the rotor e.m.f. Zero frequency High value for the satisfactory speed control The same frequency as the slip frequency The same phase as the rotor e.m.f. ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The magnetising current drawn by a 3 phase induction motor is about _______ of full load stator current. 15 to 20 % 30 to 50% 5% 10 to 15% 15 to 20 % 30 to 50% 5% 10 to 15% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, no load the slip is generally 2% 1.5 % Less than 1% 4% 2% 1.5 % Less than 1% 4% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The number of slip rings on a squirrel cage induction motor is usually One None Three Two One None Three Two ANSWER DOWNLOAD EXAMIANS APP
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