Electrical Machines
If the excitation is increased, the power factor is

None of these
 leading power factor
 unity power factor
 lagging power factor

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Electrical Machines
A 10 kW, 230 V, dc shunt machine has four terminals brought out through four leads. For this machine

 armature winding has thick leads whereas field winding has thin leads
 armature winding has thin leads whereas field winding has thick leads
 both the windings have thick leads
 both the windings have thin leads

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