Question

Calculate the value of the coefficient of adhesion for dusty rails if the value of the coefficient of adhesion for dry rails is .55.

(a) 0.65

(b) 0.89

(c) 0.97

(d) 0.48

This question was posed to me in examination.

Enquiry is from Nature of Traction Load topic in section Traction Drives of Electric Drives

Answer 1

Right answer is (d) 0.48

For explanation I would say: The value of the coefficient of adhesion for dusty rails is .48. The value of the coefficient of adhesion for dry rails is maximum.