What is the reason for stationary armature essential in alternators above 5 KVA?

What is the reason for stationary armature essential in alternators above 5 KVA?

A. Insulation requirement is less.
B. Operating cost is less.
C. Collecting of large current is simple.
D. All of the above.

Show Answer

Answer: D

Share your understanding of this question with the correct explanation.