The field coils of D.C. generator are usually made of
A. mica
B. copper
C. cast iron
D. carbon
Answer:B
The field coils of D.C. generator are usually made of
A. mica B. copper C. cast iron D. carbon
Explanation: Field coil of D.C generator is usually made up of copper because it has good electrical conductivity, good thermal conductivity and corrosion resistance.