Three Phase Induction Motors The synchronous speed of a 3-phase induction motor having 20 poles and connected to a 50 Hz source is _____ 1200 rpm 300 rpm 600 rpm 1000 rpm 1200 rpm 300 rpm 600 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The condition of induction motor on load resemble those of a transformer whose secondady is _______ None of the listed here Short circuited Supplying a variable resistive load Open circuited None of the listed here Short circuited Supplying a variable resistive load Open circuited ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If the supply voltage of a 3-phase induction motor is increased two times, then torque is _______ Decreased two times Increased four times Increased two times Decreased four times Decreased two times Increased four times Increased two times Decreased four times ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of induction motor Insufficient data Always revolves in the direction opposite to stator flux Always revolves in the direction of stator flux None of the listed here Insufficient data Always revolves in the direction opposite to stator flux Always revolves in the direction of stator flux None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The starting torque of an induction motor is maximum when rotor resistance per phase is _____ rotor reactance / phase. Two times Equal to Four times None of the listed here Two times Equal to Four times None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors An induction motor is preferred to a dc motor because it _______ Has simple and rugged construction Provides high starting torque None of the listed here Provides fine speed control Has simple and rugged construction Provides high starting torque None of the listed here Provides fine speed control ANSWER DOWNLOAD EXAMIANS APP
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