Electrical Machines
What is/are the necessary conditions for voltage build up in self excited generator?

 Field winding resistance should be less than critical resistance.
All of these
 Field winding should be properly connected to armature winding.
 Poles should contain residual flux.

ANSWER DOWNLOAD EXAMIANS APP

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

 both the windings have thin leads
 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

ANSWER DOWNLOAD EXAMIANS APP