Three Phase Induction Motors If the supply voltage of a 3-phase induction motor is increased two times, then torque is _______ Increased two times Decreased two times Decreased four times Increased four times Increased two times Decreased two times Decreased four times Increased four times ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor if air gap increased Bearing friction will reduce Windage losses will be more The power factor will be low Copper loss will reduce Bearing friction will reduce Windage losses will be more The power factor will be low Copper loss will reduce ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The induction motor has lagging power factor during Starting only None of the listed here Both starting and operation Operation only Starting only None of the listed here Both starting and operation Operation only ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The shape of the torque/slip curve of induction motor is Parabola Hyperbola Rectangular parabola Straight line Parabola Hyperbola Rectangular parabola Straight line ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The 3- phase induction motor is so designed that the rotor should have ______ under running conditions. high resistance Low resistance Large slip High reactance high resistance Low resistance Large slip High reactance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The frequency of rotor current in a 6-pole , 50 Hz, 3-phase induction motor running at 950 rpm is 1.5 Hz 5 Hz 0.05 Hz 2.5 Hz 1.5 Hz 5 Hz 0.05 Hz 2.5 Hz ANSWER DOWNLOAD EXAMIANS APP
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