Three Phase Induction Motors The approximate efficiency of a 3-phase , 50 Hz, 4 pole induction motor running at 1350 rpm is ______ 65% 40% None of the listed here 90% 65% 40% None of the listed here 90% ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor on load resemble those of a transformer whose secondady is _______ Short circuited Open circuited None of the listed here Supplying a variable resistive load Short circuited Open circuited None of the listed here Supplying a variable resistive load ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors For higher efficiency of 3-phase induction motor, the slip should be 1 As small as possible Large Very large 1 As small as possible Large Very large ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors At no load the rotor core loss of a 3 phase induction motor is Large None of the listed here Small Practically zero Large None of the listed here Small Practically zero ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase induction motor is ________ Not easily maintainable Essentially a constant speed motor Very costly A variable speed motor Not easily maintainable Essentially a constant speed motor Very costly A variable speed motor ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of induction motor None of the listed here Always revolves in the direction of stator flux Always revolves in the direction opposite to stator flux Insufficient data None of the listed here Always revolves in the direction of stator flux Always revolves in the direction opposite to stator flux Insufficient data ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS