If a is average number of peaks more than 10 mm of uneveness per kilometre, b is average number peaks more than 6 mm for gauge variation per kilometre and c is average number of peaks more than 2 mm twist per metre, then composite current recording index (Ic), as recommended by Indian Northern Railways, is
Options
A. Ic = 10 - a - b - c/4
B. Ic = 20 - a - b - c/4
C. Ic = 30 - a - b - c/4
D. Ic = 40 - a - b - c/4
Correct Answer
Ic = 40 - a - b - c/4
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