Synchronous Motors The operating speed of a synchronous motor can be changed to new fixed value by using brakes changing the load changing frequency changing the supply voltage using brakes changing the load changing frequency changing the supply voltage ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the field of a synchronous motor is under-excited, the power factor will be leading unity zero lagging leading unity zero lagging ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor cannot be due to variable supply voltage variable load windage friction variable frequency variable supply voltage variable load windage friction variable frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 60° 120° 90° 45° 60° 120° 90° 45° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The magnitude of field flux in a 3-phase synchronous motor Remains constant at all loads Varies with power factor Varies with the load Varies with speed Remains constant at all loads Varies with power factor Varies with the load Varies with speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The power factor correction capability of a loaded synchronous motor _____ with the increases in mechanical load. Decreases None of the listed here Remains unchanged Increases Decreases None of the listed here Remains unchanged Increases ANSWER DOWNLOAD EXAMIANS APP
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