Synchronous Motors The direction of rotation of a synchronous motor can be reversed by reversing, None of the listed here Supply phase sequence Polarity of rotor poles Current to field winding None of the listed here Supply phase sequence Polarity of rotor poles Current to field winding ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develop maximum power when load angle is 120° 45° 60° 90° 120° 45° 60° 90° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can operate at Leading power factor Lagging, leading and unity power factors Unity power factor only Lagging power factor only Leading power factor Lagging, leading and unity power factors Unity power factor only Lagging power factor only ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A 50 Hz synchronous motor runs at 200 rpm. The number of salient poles on the rotor are______ 36 16 None of the listed here 30 36 16 None of the listed here 30 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short-circuit test on a synchronous motor is usually about one second None of these one minute one hour one second None of these one minute one hour ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The induced e.m.f. in a synchronous motor working on leading power factor will be more than the supply voltage equal to the supply voltage less than the supply voltage None of these more than the supply voltage equal to the supply voltage less than the supply voltage None of these ANSWER DOWNLOAD EXAMIANS APP
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