Three Phase Induction Motors The maximum torque of a 3-phase induction motor under running conditions is inversely proportional to rotor reactance at standstill Inveresly proportional to supply voltage None of the listed here Directly proportional to rotor resistance inversely proportional to rotor reactance at standstill Inveresly proportional to supply voltage None of the listed here Directly proportional to rotor resistance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is preferred to a dc motor because it _______ Has simple and rugged construction None of the listed here Provides fine speed control Provides high starting torque Has simple and rugged construction None of the listed here Provides fine speed control Provides high starting torque ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The number of slip rings on a squirrel cage induction motor is usually None Two Three One None Two Three One ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 4 pole induction motor has a synchronous speed of 1500 rpm, then supply frequency is _____ 60 Hz None of the listed here 25 Hz 50 Hz 60 Hz None of the listed here 25 Hz 50 Hz 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 ______ None of the listed here 1+S S-1 1-S None of the listed here 1+S S-1 1-S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The speed of a squirrel cage induction motor is changed by Pole changing None of the listed here Rheostatic control Cascade control Pole changing None of the listed here Rheostatic control Cascade control ANSWER DOWNLOAD EXAMIANS APP
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