Electrical Machines
A simple method of increasing the voltage of a DC generator is to

 increase the source frequency.
 increase the number of turns in armature coil.
 increase the number of turns in field coil.
  increase the speed of shaft rotation.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
When the supply terminal of a DC shunt motor are interchanged

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

ANSWER DOWNLOAD EXAMIANS APP