Civil Engineering MCQJE Level Civil Engineering
On a horizontal road curve, if design speed is increased while permissible superelevation and side-friction factor remain unchanged, the required curve radius will:
Transportation EngineeringCurve Radius and SpeedMEDIUM
Choose the correct answer
A
Increase approximately with the square of speed
B
Decrease in direct proportion to speed
C
Remain unchanged because camber controls it
D
Depend only on pavement thickness
Correct Answer
A. Increase approximately with the square of speed
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For highway curves, V^2/(gR) is balanced by superelevation and side friction; with e and f fixed, radius varies approximately with V squared.
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This MCQ belongs to SSC JE Civil Paper-I Technical Mock Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.