Electrical Machines
What is the effect of armature reaction ?

 Armature flux distorts the main field flux.
  Both option B and C.
 Armature flux weakens the main field flux.
 None of the options.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC machine

 current and emf in armature are alternating.
 current and emf at the terminals are alternating.
 emf in armature conductors and at the terminals is alternating.
 current and emf in armature are unidirectional

ANSWER DOWNLOAD EXAMIANS APP