Multiple choice

The phenomenon of misalignment of rails due to change in temperature is known as

  1. cropping

  2. creeping

  3. bulging

  4. buckling
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Buckling is the lateral misalignment or distortion of rails caused by thermal stress. When temperature increases, rails expand and if constrained, develop compressive forces that can cause the track to suddenly shift sideways, creating dangerous kinks or misalignments.

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