1.

If the flange angle is , coefficient of friction between flange and rail is , the derailment coefficient according to Nadal's formula should not exceed

A. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/90-1092-1.png">
B. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/90-1092-2.png">
C. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/90-1092-3.png">
D. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/90-1092-4.png">
Answer» D. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/90-1092-4.png">


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