Electrical Machines To achieve spark less commutation brushes of DC generator are rocked ahead so as to bring them None of these in magnetic neutral axis. just behind the magnetic neutral axis. just ahead of magnetic neutral axis. None of these in magnetic neutral axis. just behind the magnetic neutral axis. just ahead of magnetic neutral axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For P pole machine relation between electrical degrees and mechanical degrees is θelec = 2/P*θmech θelec = θmech θelec = P/2*θmech θelec = 4/P*θmech θelec = 2/P*θmech θelec = θmech θelec = P/2*θmech θelec = 4/P*θmech ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines From no load to full load the slip will slightly increase. slightly decrease. None of these not change. slightly increase. slightly decrease. None of these not change. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will increase but Pe will decrease Ph will decrease but Pe will remain same Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will increase but Pe will decrease Ph will decrease but Pe will remain same ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To eliminate 5th harmonic in the induced voltage phase breadth should be 36° 30° 18° 72° 36° 30° 18° 72° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are the starters used for starting of cage motors? DOL starter. All of these. Star-delta starter. Auto transformer starter. DOL starter. All of these. Star-delta starter. Auto transformer starter. ANSWER DOWNLOAD EXAMIANS APP
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