Alternators The frequency of the system with which several alternators are paralleled can be increased of by simultaneously _______ of all generators. 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 Decreasing the speed of prime movers Increasing the field excitation ANSWER DOWNLOAD EXAMIANS APP
Alternators For the same power rating, an alternator is ______that of a dc generator. Larger in size than Smaller in size than None of the listed here Of the same size as Larger in size than Smaller in size than None of the listed here Of the same size as ANSWER DOWNLOAD EXAMIANS APP
Alternators Turbo alternators have rotors of _______ Large diameter and long axial length Large diameter and small axial length Small diameter and long axial length Same diameter and axial length Large diameter and long axial length Large diameter and small axial length Small diameter and long axial length Same diameter and axial length ANSWER DOWNLOAD EXAMIANS APP
Alternators Hydrogen is used in large alternators mainly to Reduce distortion of waveform Reduce eddy current losses Cool the machine Strengthen the magnetic field Reduce distortion of waveform Reduce eddy current losses Cool the machine Strengthen the magnetic field ANSWER DOWNLOAD EXAMIANS APP
Alternators In an alternator, the effect of armature reaction is minimum at power factor of ______ Unity 0.866 lagging 0.866 leading 0.5 lagging Unity 0.866 lagging 0.866 leading 0.5 lagging 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
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