Three Phase Induction Motors The complete circle diagram of induction motor can be drawn with the help of data found from All of these Stator resistance test Blocked rotor test No-load test All of these Stator resistance test Blocked rotor test No-load test ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The shape of the torque/slip curve of induction motor is Straight line Rectangular parabola Parabola Hyperbola Straight line Rectangular parabola Parabola Hyperbola ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Very large 3-phase induction motors (greater than 25 HP) are started _____ None of the listed here Direct on line By auto transformer starting Star-delta starting None of the listed here Direct on line By auto transformer starting Star-delta starting 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 ______ 90% 65% None of the listed here 40% 90% 65% None of the listed here 40% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Slip of an induction motor is negative when Rotor speed is less than the synchronous speed of the field and are in the same direction Magnetic field and rotor rotate in opposite direction Rotor speed is more than the synchronous speed of the field and are in the same direction None of these Rotor speed is less than the synchronous speed of the field and are in the same direction Magnetic field and rotor rotate in opposite direction Rotor speed is more than the synchronous speed of the field and are in the same direction None of these ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the air gap between the rotor and stator of a 3-phase induction motor is increased, then_______ Leakage reactances are increased None of the listed here Leakage reactances are decreased No load current is decreased Leakage reactances are increased None of the listed here Leakage reactances are decreased No load current is decreased ANSWER DOWNLOAD EXAMIANS APP
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