Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have 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. Zero frequency High value for the satisfactory speed control ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Friction and windage loss of a 3 phase induction motor are Maximum at no load Remains the same at all loads None of the listed here Minimum at no load Maximum at no load Remains the same at all loads None of the listed here Minimum at no load ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Less maintenance troubles are experienced in case of None of these Squirrel cage induction motor Slip ring induction motor Both (A) and (B) None of these Squirrel cage induction motor Slip ring induction motor Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The direction of rotation of field in a 3 phase induction motor depends upon _____ Number of poles Phase sequence of supply voltage Supply frequency Magnitude of supply voltage Number of poles Phase sequence of supply voltage Supply frequency Magnitude of supply voltage ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of induction motor Insufficient data None of the listed here Always revolves in the direction of stator flux Always revolves in the direction opposite to stator flux Insufficient data None of the listed here Always revolves in the direction of stator flux Always revolves in the direction opposite to stator flux ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors One of the speeds of a 2 speed squirrel cage induction motor is 800 rpm. The other speed will be _____ 1600 rpm 400 rpm 2400 rpm 1200 rpm 1600 rpm 400 rpm 2400 rpm 1200 rpm ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS