Three Phase Induction Motors If the rotor slots are made deeper, rotor resistance is ______ 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 Decreased at starting ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The maximum torque in an induction motor depends on All of the listed here Frequency Square of supply voltage Rotor inductive reactance All of the listed here Frequency Square of supply voltage Rotor inductive reactance 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 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 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 ______ None of the listed here 40% 65% 90% None of the listed here 40% 65% 90% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Less maintenance troubles are experienced in case of Slip ring induction motor None of these Squirrel cage induction motor Both (A) and (B) Slip ring induction motor None of these Squirrel cage induction motor Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors When the rotor of a 3-phase induction motor is blocked, the slip is _____ 0.5 1 0.1 0 0.5 1 0.1 0 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS