Synchronous Motors The maximum speed variation in a 3 phase synchronous motor is 2 percent 10 percent Zero 4 percent 2 percent 10 percent Zero 4 percent 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 the load using brakes changing frequency changing the supply voltage changing the load using brakes changing frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor is pulled out of synchronism, the stator current _______ Is increased too much Is decreased too much Remains unchanged Becomes zero Is increased too much Is decreased too much Remains unchanged Becomes zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of the synchronous motor has higher values for Higher excitation only None of the listed here Low excitation only Both higher and low excitation Higher excitation only None of the listed here Low excitation only Both higher and low excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Change of D.C. excitation of a synchronous motor changes Power factor of power drawn by the motor Any of the above Motor speed Applied voltage of the motor Power factor of power drawn by the motor Any of the above Motor speed Applied voltage of the motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 60° 120° 45° 90° 60° 120° 45° 90° ANSWER DOWNLOAD EXAMIANS APP
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