Q.

In a B.G. railway track, the specified ruling gradient is 1 in 250. The horizontal curve of 3° on a gradient of 1 in 250 will have the permissible gradient of

A. 1 in 257
B. 1 in 357
C. 1 in 457
D. 1 in 512
Answer» B. 1 in 357
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