Electrical Machines
The speed of a 3-phase induction motor operating in its stable region

 decreases with increase in the load torque.
 increases with increase in the load torque.
 decreases with decrease in the load torque.
 remains constant.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For a given torque, reducing divertor resistance of a DC series motor

  Decrease in speed demanding less armature current.
  Increase in speed but armature currnet remains the same.
  Increase in speed demanding more armature current.
  Decrease in speed but armature current remains the same.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In dc machines, the field system has to be provided on stator unlike synchronous machines Where in it could be on any member, because

 dc machines are comparatively low rating machines.
 commutator action is not possible otherwise
 it gives more uniform air-gap flux distribution
 it reduces field structure iron losses

ANSWER DOWNLOAD EXAMIANS APP