Electrical Machines
A belt-driven cumulatively-compound dc generator is delivering power to the dc mains. If the Belt snaps then the machine will run as a

 cumulative compounded motor in the same direction
 cumulative compounded motor in opposite direction
 differentially compounded motor in the same direction
 differentially compounded motor in the opposite direction

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In case of 3 - Φ IM, plugging means

  interchanging two supply phases for quick stopping.
  starting the motor on load which is more than the rated load.
  pulling the motor directly on line without a rotor.
  locking of rotor due to harmonics.

ANSWER DOWNLOAD EXAMIANS APP