UPSC Civil Service Exam Questions - Civil Engineering Questions and Answers

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Wearing locations of rails and their reasons are listed below :
1. Wear at end of rails : Loose fish bolts
2. Wear at sides of rail head : Constant lerake application
3. Wear on the top of rail head on tangent truck : Rigidity of wheel base
4. Wear on top of rail head on curves : Lesser area of contact between wheel and rail Which of the pairs given above are correctly matched ?

1 and 4

1 and 2

2 and 3

1, 2, 3 and 4

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