Three Phase Induction Motors The synchronous speed of a 3-phase induction motor having 20 poles and connected to a 50 Hz source is _____ 1000 rpm 600 rpm 1200 rpm 300 rpm 1000 rpm 600 rpm 1200 rpm 300 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 3-phase induction motor is running at slip S, then rotor copper loss is equal to (1-S) × rotor input None of the listed here S × rotor input (1+S) × rotor input (1-S) × rotor input None of the listed here S × rotor input (1+S) × rotor input ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors For higher efficiency of 3-phase induction motor, the slip should be As small as possible Large Very large 1 As small as possible Large Very large 1 ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the air gap between the rotor and stator of a 3-phase induction motor is increased, then_______ Leakage reactances are decreased Leakage reactances are increased No load current is decreased None of the listed here Leakage reactances are decreased Leakage reactances are increased No load current is decreased None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Reduced voltage starter can be used with Squirrel cage as well as slip ring induction motor Slip ring motor only but not with squirrel cage induction motor None of these Squirrel cage induction motor only but not with slip ring motor Squirrel cage as well as slip ring induction motor Slip ring motor only but not with squirrel cage induction motor None of these Squirrel cage induction motor only but not with slip ring motor ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A four speed squirrel cage induction motor uses______ stator windings. One Three Four Two One Three Four Two ANSWER DOWNLOAD EXAMIANS APP
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