Electrical Machines
Series booster is a

 shunt wound DC generator.
 separately excited DC generator.
  series wound DC generator.
 permanent magnet DC generator.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
What will happen if the the supply terminals are reversed in case of a DC shunt motor?

 The motor will run in reverse direction.
 The motor will stop.
 The motor will run much faster in the same direction.
 The motor will run at its normal speed in the same direction as before.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The following statements relate to compensating winding (CW) and interpole winding (IW) of a dc machine : 1. CW neutralizes the armature reaction under a pole pitch 2. IW is connected in series with armature circuit 3. IW produces mmf in the commutating zone only 4. CWmmf is directed along the brush axis 5. Mmf produced by IW is equal to armature mmf From these, the correct statements are

 2, 3, 4
 1, 2, 3, 4 and 5
 1, 3, 4, 5
 2, 3, 4, 5

ANSWER DOWNLOAD EXAMIANS APP