Three Phase Induction Motors Slip of an induction motor is negative when None of these Rotor speed is less than the synchronous speed of the field and are in the same direction Rotor speed is more than the synchronous speed of the field and are in the same direction Magnetic field and rotor rotate in opposite direction None of these Rotor speed is less than the synchronous speed of the field and are in the same direction Rotor speed is more than the synchronous speed of the field and are in the same direction Magnetic field and rotor rotate in opposite direction ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The cogging of an induction motor can be avoided by Using DOL starter Having number of rotor slots more or less than the number of stator slots Auto transformer starter Proper ventilation Using DOL starter Having number of rotor slots more or less than the number of stator slots Auto transformer starter Proper ventilation 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 _____ 1200 rpm 1600 rpm 2400 rpm 400 rpm 1200 rpm 1600 rpm 2400 rpm 400 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a squirrel cage rotor, the bars are not placed parallel to the shaft but are skewed to have ______ Less rotor losses Uniform torque None of the listed here Greater mechanical strength Less rotor losses Uniform torque None of the listed here Greater mechanical strength 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 Short circuited Supplying a variable resistive load None of the listed here Open circuited Short circuited Supplying a variable resistive load ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors For higher efficiency of 3-phase induction motor, the slip should be As small as possible 1 Large Very large As small as possible 1 Large Very large ANSWER DOWNLOAD EXAMIANS APP
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