Synchronous Motors A synchronous motor can be used as a synchronous capacitor when it is Under excited Over loaded Under loaded Over excited Under excited Over loaded Under loaded Over excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor is pulled out of synchronism, the stator current _______ Is decreased too much Is increased too much Becomes zero Remains unchanged Is decreased too much Is increased too much Becomes zero Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An under excited synchronous motor behaves as_______ A resistor An inductor None of the listed here A capacitor A resistor An inductor None of the listed here A capacitor 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 maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as pull-up torque None of these pull-out torque pull-in torque pull-up torque None of these pull-out torque pull-in torque ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on an over-excited or under excited synchronous motor is increased, rate of change of its armature current as compared with that of power factor is less equal more twice less equal more twice ANSWER DOWNLOAD EXAMIANS APP
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