Electrical Machines
In a synchronous motor torque or load angle δ ------------- with increase in load

 remains unaffected
 increases
 decreases
None of these

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Electrical Machines
Two dc machines A and B, using the same conductor material, have armature circuit resistances of 0.4 Ω and 1.2 Ω respectively. Of the two machines,

 both are of the same size for the same current rating
 B is bigger than A for the same current rating
 A is bigger than B for the same current rating
 A is bigger than B for the same voltage rating

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