Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have 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. The same frequency as the slip frequency Zero frequency ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor at no load resemble those of a transformer whose secondady is _______ Short-circuited Open circuited Supplying a variable resistive load None of the listed here Short-circuited Open circuited Supplying a variable resistive load None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In medium sized induction motor, the slip is generally around 0.4 % 4 % 14% 0.04 % 0.4 % 4 % 14% 0.04 % ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The number of slip rings on a squirrel cage induction motor is usually Three None Two One Three None Two One ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The starting torque of an induction motor is maximum when rotor resistance per phase is _____ rotor reactance / phase. Four times Two times None of the listed here Equal to Four times Two times None of the listed here Equal to ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors At no load the rotor core loss of a 3 phase induction motor is Small Practically zero Large None of the listed here Small Practically zero Large None of the listed here ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS