D.C. machines designed with a large value of air gap length have_____________?
Correct answer: C. better ventilation
- A. worst, ventilation
- B. poor ventilation
- C. better ventilation
- D. none of the above
Explanation
A large air gap leaves more space around the armature, allowing air to circulate more freely and improving ventilation. It also reduces the tendency of magnetic attraction to disturb the rotating parts.
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