Three Phase Induction Motors As load on an induction motor goes on increasing Its power factor goes on increasing up to full load and then it falls again Its power factor goes on increasing even after full load Its power factor remains constant Its power factor goes on decreasing Its power factor goes on increasing up to full load and then it falls again Its power factor goes on increasing even after full load Its power factor remains constant Its power factor goes on decreasing ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the frequency of 3-phase supply to the stator of a 3-phase induction motor is increased, then synchronous speed ______ Remains unchanged Is increased None of the listed here Is decreased Remains unchanged Is increased None of the listed here Is decreased ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The no load speed of an induction motor depends on Both supply frequency and number of poles The number of its poles The supply frequency The maximum flux/poles Both supply frequency and number of poles The number of its poles The supply frequency The maximum flux/poles ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor at stand still resemble those of a transformer whose secondady is _______ Open circuited None of the listed here Supplying a variable resistive load Short circuited Open circuited None of the listed here Supplying a variable resistive load Short circuited ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase induction motor is running at 2% slip. If the input to rotor is 1000 W, then mechanical power developed by the motor is _______ 980 W 20 W 200 W 500 W 980 W 20 W 200 W 500 W ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the supply voltage of a 3-phase induction motor is increased two times, then torque is _______ Decreased two times Increased two times Increased four times Decreased four times Decreased two times Increased two times Increased four times Decreased four times ANSWER DOWNLOAD EXAMIANS APP
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