An electric locomotive running at 60 kmph on a curved track of 1-
| An electric locomotive running at 60 kmph on a curved track of 1-68 m gauge laid at 800 m radius should be provided with super elevation of the rail by an amount of
A. 50-5 mm
B. 55.5 mm
C. 59.5 mm
D. 65.5 mm
Please scroll down to see the correct answer and solution guide.
Right Answer is: C
SOLUTION
Concept:
To counteract the effect of centrifugal force, the level of the outer rail is raised above the inner rail by a certain amount to introduce the centripetal force.
This raised elevation of outer rail above the inner rail at a horizontal curve is called superelevation.
For any gauge super elevation ‘e’(in m) is given as
\(e = \frac{{{\rm{GV}}^2}}{{127{\rm{R}}}}\)
Where, G = Gauge distance
V = velocity in Kmph
R = Radius of curve
Calculation:
G = Gauge distance = 1.68 m
V = velocity in Kmph = 60
R = Radius of curve = 800m
e = (1.68 × 602) / (127 × 800) = 59.52 mm