The Wheels of Rolling stock have slope ________

A)
1 in 10
B)
1 in 15
C)
1 in 20
D)
1 in 30

Correct Answer :   1 in 20


Explanation : The wheels of rolling stock are made in the shape of a frustum of a cone having a slope of 1 in 20 is known as coning of wheels. The objective of coning of wheels is to prevent lateral movement of trains in straight track.