GATE CE 2015 Set 2 — Question 42
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Transportation Engineering → Horizontal & Vertical Alignment → Superelevation
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Question
A superspeedway in New Delhi has among the highest super-elevation rates of any track on the Indian Grand Prix circuit. The track requires drivers to negotiate turns with a radius of and banking. Given this information, the coefficient of side friction required in order to allow a vehicle to travel at along the curve is:
Correct answer
(A) 1.761
Solution
The relationship between super-elevation (), coefficient of side friction (), velocity (), and radius () for a curved track is given by the formula:Given data:
Radius,
Banking angle,
Super-elevation,
Velocity,
Acceleration due to gravity, Substituting the values into the formula:The closest value among the given options is 1.761. Therefore, option (A) is the correct choice.
Radius,
Banking angle,
Super-elevation,
Velocity,
Acceleration due to gravity, Substituting the values into the formula:The closest value among the given options is 1.761. Therefore, option (A) is the correct choice.
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