a) to join the two rails together
b) to join rails with the sleeper
c) to allow rail to expand and contract freely
d) none of the above
Ans: a
![MCQs [2024]](https://engineeringinterviewquestions.com/wp-content/uploads/2021/02/Interview-Questions-2.png)
a) to join the two rails together
b) to join rails with the sleeper
c) to allow rail to expand and contract freely
d) none of the above
Ans: a