Alternators In air-crafts, alternators have operating frequency of 50 Hz 400 Hz 500 Hz 60 Hz 50 Hz 400 Hz 500 Hz 60 Hz ANSWER DOWNLOAD EXAMIANS APP
Alternators Voltage regulation of an alternator is larger than that of a dc generator because of _______ None of the listed here Large armature resistance Large leakage reactance Complex effects of armature reaction None of the listed here Large armature resistance Large leakage reactance Complex effects of armature reaction ANSWER DOWNLOAD EXAMIANS APP
Alternators The synchronous reactance of an alternator is generally _______ armature resistance. 10 times smaller than 5 times smaller than 10 to 100 times greater than 5 times greater than 10 times smaller than 5 times smaller than 10 to 100 times greater than 5 times greater than ANSWER DOWNLOAD EXAMIANS APP
Alternators For producing an emf of given frequency, an alternator will run at greatest speed for _____ poles. 12 2 8 4 12 2 8 4 ANSWER DOWNLOAD EXAMIANS APP
Alternators The frequency of the system with which several alternators are paralleled can be increased of by simultaneously _______ of all generators. Decreasing the speed of prime movers Increasing the field excitation Increasing the speed of prime movers Decreasing the field excitation Decreasing the speed of prime movers Increasing the field excitation Increasing the speed of prime movers Decreasing the field excitation ANSWER DOWNLOAD EXAMIANS APP
Alternators A two pole alternator is running at 1500 rpm. Its angular velocity is ______ 192 rad/s 157 rad/s 212 rad/s 118 rad/s 192 rad/s 157 rad/s 212 rad/s 118 rad/s ANSWER DOWNLOAD EXAMIANS APP
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