Three Phase Induction Motors At starting of a double squirrel cage induction motor _______ Lower winding is more effective None of the listed here Lower cage winding has low reactance Outer cage winding has good pf Lower winding is more effective None of the listed here Lower cage winding has low reactance Outer cage winding has good pf ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The maximum torque of a 3-phase induction motor under running conditions is Inveresly proportional to supply voltage inversely proportional to rotor reactance at standstill Directly proportional to rotor resistance None of the listed here Inveresly proportional to supply voltage inversely proportional to rotor reactance at standstill Directly proportional to rotor resistance None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In medium sized induction motor, the slip is generally around 4 % 14% 0.04 % 0.4 % 4 % 14% 0.04 % 0.4 % 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 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 The frame of an induction motor is usually made of Aluminium Cast iron Silicon steel Bronze Aluminium Cast iron Silicon steel Bronze ANSWER DOWNLOAD EXAMIANS APP
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