Question: A dc machine has 6 poles all connected in series. Each pole has 9 H inductance and field current is 2 A. Total inductance and total energy stored are
[A].9 H and 18 J
18 H and 36 J
54 H and 108 J
108 H and 216 J
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
Total L = 6 x 9 = 54 H.
Energy = x 54 x 22 = 108 J.