The coils of D.C. motor starter are wound with wire of_______________?
Correct answer: C. manganin
- A. copper
- B. kanthal
- C. manganin
- D. nichrome
Explanation
Starter coils require relatively high resistance to limit current, so manganin wire is used because it has high resistivity and a low temperature coefficient. Copper has low resistance and is therefore unsuitable for this purpose.
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