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 A high starting torque can be obtained in a 3phase induction motor by _______ Decreasing rotor resistance Increasing rotor reactance Increasing rotor resistance None of the listed here Decreasing rotor resistance Increasing rotor reactance Increasing rotor resistance None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The cogging of an induction motor can be avoided by Proper ventilation Auto transformer starter Using DOL starter Having number of rotor slots more or less than the number of stator slots Proper ventilation Auto transformer starter Using DOL starter Having number of rotor slots more or less than the number of stator slots ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of an induction motor runs at Synchronous speed Below synchronous speed Any of the above Above synchronous speed Synchronous speed Below synchronous speed Any of the above Above synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The complete circle diagram of induction motor can be drawn with the help of data found from Blocked rotor test No-load test Stator resistance test All of these Blocked rotor test No-load test Stator resistance test All of these ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor at stand still resemble those of a transformer whose secondady is _______ None of the listed here Open circuited Supplying a variable resistive load Short circuited None of the listed here Open circuited Supplying a variable resistive load Short circuited ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS