Alternators In an alternator, the effect of armature reaction is minimum at power factor of ______ 0.5 lagging 0.866 leading 0.866 lagging Unity 0.5 lagging 0.866 leading 0.866 lagging Unity ANSWER DOWNLOAD EXAMIANS APP
Alternators The speed of an alternator is changed from 3000 rpm to 1500 rpm. The generated emf/phase will become Unchanged Half Double One fourth Unchanged Half Double One fourth ANSWER DOWNLOAD EXAMIANS APP
Alternators The full load efficiency of an alternator _______with increases in speed. Increases Decreases Remains unchanged None of the listed here Increases Decreases Remains unchanged None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Alternators If the lagging load pf of an alternator is decreased, the demagnetising effect of armature reaction _______ Remains the same Is increased Is decreased None of the listed here Remains the same Is increased Is decreased None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Alternators The frequency of emf generated in an 8-pole alternator running at 900 rpm is ______ 50 Hz 120 Hz 60 Hz None of the listed here 50 Hz 120 Hz 60 Hz None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Alternators In an alternator, the frequency of voltage generated depend on None of the listed here Number of poles only Both rotative speed and number of poles Rotative speed only None of the listed here Number of poles only Both rotative speed and number of poles Rotative speed only ANSWER DOWNLOAD EXAMIANS APP
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