Alternators If the excitation of an alternator operating in parallel with other alternators is decreased, its ______ Output kW will change None of the listed here Pf becomes more lagging Pf becomes more leading Output kW will change None of the listed here Pf becomes more lagging Pf becomes more leading ANSWER DOWNLOAD EXAMIANS APP
Alternators The frequency of emf generated in an 8-pole alternator running at 900 rpm is ______ None of the listed here 60 Hz 120 Hz 50 Hz None of the listed here 60 Hz 120 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Alternators Voltage drop in an alternator when under load is due to ______ Armature resistance All of the listed here Armatute reaction Armature reactance Armature resistance All of the listed here Armatute reaction Armature reactance ANSWER DOWNLOAD EXAMIANS APP
Alternators In an alternator, for a coil having a span of 2/3 of pole pitch, the coil span factor will be 0.866 0.707 0.2 0.6 0.866 0.707 0.2 0.6 ANSWER DOWNLOAD EXAMIANS APP
Alternators When the speed of an alternator is reduced by half, the generated emf will become Half Four times One-fourth Twice Half Four times One-fourth Twice ANSWER DOWNLOAD EXAMIANS APP
Alternators Hydrogen is used in large alternators mainly to Strengthen the magnetic field Reduce eddy current losses Cool the machine Reduce distortion of waveform Strengthen the magnetic field Reduce eddy current losses Cool the machine Reduce distortion of waveform ANSWER DOWNLOAD EXAMIANS APP
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