Electrical Machines
Which of the following pairs is/are correct?

 semi closed slot-----leakage flux is moderate
 open slot----- leakage flux is less
 closed slot----- leakage flux is high
All of these

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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

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

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Electrical Machines
The residual magnetism of a self-excited dc generator is lost. To build up its emf again

 field winding must be excited by low voltage dc supply
 the field winding connection must be reversed
 the field winding must be replaced
 the armature connection must be reversed

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