Multiple choice

An outward slope provided on the tread of the wheel is

  1. 1 in 5

  2. 1 in 10

  3. 1 in 20

  4. 1 in 25
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Railway wheels are coned at 1 in 20 to provide a slight outward slope on the tread. This coning helps keep the wheels centered on the track and prevents excessive rubbing against the rail face. The 1 in 20 slope is the standard used in railway engineering.

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