Three Phase Induction Motors The speed of a squirrel-cage induction motor can be controlled by all of the following except Changing winding resistance Changing supply frequency Changing number of poles Reducing supply voltage Changing winding resistance Changing supply frequency Changing number of poles Reducing supply voltage 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 ______ None of the listed here Is decreased Remains unchanged Is increased None of the listed here Is decreased Remains unchanged Is increased ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 3 phase induction motor is running at a slip S, then approximate efficiency of the motor is ______ 1-S S-1 None of the listed here 1+S 1-S S-1 None of the listed here 1+S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is Self starting with high torque Self starting with low torque Non self starting Self starting with zero torque Self starting with high torque Self starting with low torque Non self starting Self starting with zero torque 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 Directly proportional to rotor resistance None of the listed here inversely proportional to rotor reactance at standstill Inveresly proportional to supply voltage Directly proportional to rotor resistance None of the listed here inversely proportional to rotor reactance at standstill ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In the circle diagram for induction motor, the diameter of the circle represents Slip Running torque Line voltage Rotor current Slip Running torque Line voltage Rotor current ANSWER DOWNLOAD EXAMIANS APP
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