Three Phase Induction Motors The speed of a squirrel-cage induction motor can be controlled by all of the following except Changing number of poles Reducing supply voltage Changing supply frequency Changing winding resistance Changing number of poles Reducing supply voltage Changing supply frequency Changing winding resistance ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The direction of rotation of field in a 3 phase induction motor depends upon _____ Phase sequence of supply voltage Magnitude of supply voltage Supply frequency Number of poles Phase sequence of supply voltage Magnitude of supply voltage Supply frequency Number of poles ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase induction motor is running at 2% slip. If the input to rotor is 1000 W, then mechanical power developed by the motor is _______ 20 W 500 W 980 W 200 W 20 W 500 W 980 W 200 W ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of an induction motor runs at Synchronous speed Any of the above Below synchronous speed Above synchronous speed Synchronous speed Any of the above Below synchronous speed Above synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase induction motor is ________ Not easily maintainable Very costly Essentially a constant speed motor A variable speed motor Not easily maintainable Very costly Essentially a constant speed motor A variable speed motor ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In medium sized induction motor, the slip is generally around 14% 0.4 % 4 % 0.04 % 14% 0.4 % 4 % 0.04 % ANSWER DOWNLOAD EXAMIANS APP
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