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

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 3-φ alternator has negligible stator resistance. A short circuit test is conducted on this alternator. At a particular speed, a field current of If1 is required to drive the rated armature current. If the speed of the alternator is reduced to half, the field current required to maintain rated armature current

 Would be equal to If1/2.
  Cannot be predicted due to insufficient data.
 Woud be equal to 2If1.
 Would be equal to If1.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The factors that are responsible for decrease in terminal voltage of a shunt generator are

 armature resistance, inter poles, armature.
  reduction in field current, effect of armature reaction, armature.
 armature resistance, effect of armature reaction.
  armature resistance, effect of armature reaction.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electrical Machines