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

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

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Flashing of DC generator means

  increasing flux density by providing extra ampere-turns in field.
None of these
  creation of residual magnetism by a DC source.
 neutralization of residual magnetism.

ANSWER DOWNLOAD EXAMIANS APP