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UPSC Civil Service Exam Questions

Q1:

What is the steepest gradient permissible on a 2° curve for B.G. line having using gradient of 1 in 200 ?

A 1 in 250

B 1 in 238

C 1 in 209

D 1 in 198

ANS:B - 1 in 238

Ruling gradient = 1 in 200= 0.5%,
Compensation for 2° curve =0.04*2 =0.08%,
compensated gradient = 0.5-0.08=0.42% = 1 in 238.



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