Synchronous Motors A synchronous motor can be used as a synchronous capacitor when it is Over excited Under loaded Under excited Over loaded Over excited Under loaded Under excited Over loaded ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor can not be due to Windage friction Variable load Variable frequency Variable supply frequency Windage friction Variable load Variable frequency Variable supply frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of the synchronous motor has higher values for Both higher and low excitation Higher excitation only Low excitation only None of the listed here Both higher and low excitation Higher excitation only Low excitation only None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor connected to infinite bus-bars has at constant full load, 100% excitation and unity power factor. On changing the excitation only, the armature current will have leading power factor with under-excitation lagging power factor with over-excitation no change of power factor leading power factor with over-excitation leading power factor with under-excitation lagging power factor with over-excitation no change of power factor leading power factor with over-excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The percentage slip in case of a synchronous motor is 0.005 1 0.01 zero 0.005 1 0.01 zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short-circuit test on a synchronous motor is usually about one hour None of these one minute one second one hour None of these one minute one second ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS