In a railway track, two rails are joined end to end with a gap tin between them because?
- A. Steel can be saved
- B. Accidents due to contraction in winter can be avoided
- C. Air gaps are necessary for bearing the weight of running train
- D. Accidents due to expansion in summer can be avoided
- E. All of these
Explanation
Steel rails expand when heated in summer. The gaps provide room for this expansion and prevent the rails from bending or buckling.
Related questions
The state of matter that has the highest kinetic energy is _________?
Light can be considered as__________Signal?
Which famous scientist formulated the laws of motion and universal gravitation?
The waves which are used for line of sight (LOS) communication are called:
In the structure of fiber, the light is guided through the core due to total internal: