Synchronous Motors The magnitude of field flux in a 3-phase synchronous motor Varies with the load Remains constant at all loads Varies with speed Varies with power factor Varies with the load Remains constant at all loads Varies with speed Varies with power factor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develop maximum power when load angle is 120° 60° 45° 90° 120° 60° 45° 90° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous machine with low value of short-circuit ratio has lower stability limit good speed regulation high stability limit good voltage regulation lower stability limit good speed regulation high stability limit good voltage regulation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed regulation of a synchronous motor is always 1% 0.5% Positive Zero 1% 0.5% Positive Zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors For power factor correction, synchronous motors operate at normal load with minimum excitation no-load and under-excited fields no-load and greatly over-excited fields normal load with zero excitation normal load with minimum excitation no-load and under-excited fields no-load and greatly over-excited fields normal load with zero excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The operating speed of a synchronous motor can be changed to new fixed value by changing the supply voltage changing frequency using brakes changing the load changing the supply voltage changing frequency using brakes changing the load ANSWER DOWNLOAD EXAMIANS APP
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