Co-efficient of adhesion reduces due to the presence of which of the following ?
Correct answer: D. both B. and C.
- A. Sand on rails
- B. Dew on rails
- C. Oil on the rails
- D. both B. and C.
Explanation
Dew forms a water film and oil acts as a lubricant, both of which reduce wheel-to-rail adhesion. Sand has the opposite effect and is spread to improve adhesion.
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