Alternators Modern 3-phase alternator of a central power station will have generated voltage of 230 V 11 kV 400 V 132 kV 230 V 11 kV 400 V 132 kV ANSWER DOWNLOAD EXAMIANS APP
Alternators A lower voltage alternator, for the same power rating, will be More efficient Larger in size Operating at high rpm More costly More efficient Larger in size Operating at high rpm More costly ANSWER DOWNLOAD EXAMIANS APP
Alternators The magnitude of emf generated by an alternators depends on ______ Number of poles Rotor speed All of the listed here Flux per pole Number of poles Rotor speed All of the listed here Flux per pole ANSWER DOWNLOAD EXAMIANS APP
Alternators In an alternator, the effect of armature reaction is minimum at power factor of ______ 0.866 lagging Unity 0.866 leading 0.5 lagging 0.866 lagging Unity 0.866 leading 0.5 lagging ANSWER DOWNLOAD EXAMIANS APP
Alternators The synchronous reactance of an alternator is generally _______ armature resistance. 5 times greater than 10 to 100 times greater than 5 times smaller than 10 times smaller than 5 times greater than 10 to 100 times greater than 5 times smaller than 10 times smaller than ANSWER DOWNLOAD EXAMIANS APP
Alternators If the lagging load pf of an alternator is decreased, the demagnetising effect of armature reaction _______ None of the listed here Remains the same Is increased Is decreased None of the listed here Remains the same Is increased Is decreased ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS