If the co-efficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails ?
Correct answer: D. 0.16
- A. 0.3
- B. 0.26
- C. 0.225
- D. 0.16
Explanation
Wet rails reduce adhesion below the dry-rail value, so the coefficient must be less than 0.26; a commonly used wet-rail value is about 0.16. The value 0.30 is higher than the dry-rail coefficient and is therefore impossible here.
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