Alternators The voltage regulation of an alternator for a pf of 0.8 lagging is _______at unity pf. Smaller than The same as Greater than None of the listed here Smaller than The same as Greater than None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Alternators Voltage regulation of an alternator is larger than that of a dc generator because of _______ Complex effects of armature reaction Large leakage reactance None of the listed here Large armature resistance Complex effects of armature reaction Large leakage reactance None of the listed here Large armature resistance ANSWER DOWNLOAD EXAMIANS APP
Alternators If the excitation of an alternator operating in parallel with other alternators is decreased, its ______ Pf becomes more leading Pf becomes more lagging Output kW will change None of the listed here Pf becomes more leading Pf becomes more lagging Output kW will change None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Alternators The field winding of an alternator is _____ excited. AC None of the listed here DC Both DC and AC AC None of the listed here DC Both DC and AC 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 decreased None of the listed here Is increased Remains the same Is decreased None of the listed here Is increased ANSWER DOWNLOAD EXAMIANS APP
Alternators Hydrogen is used in large alternators mainly to Cool the machine Strengthen the magnetic field Reduce eddy current losses Reduce distortion of waveform Cool the machine Strengthen the magnetic field Reduce eddy current losses Reduce distortion of waveform ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS