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Civil Engineering - Railways

Exercise : Railways - Section 3
31.
If D is distance between centres of two parallel tracks of gauge G with entire curved leads and equal angles of crossing, total length of crossover, is
D (4R - 2G - D)
D (3R - 2G -D)
D (3R + 2G - D)
D (4 + 2G - D)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Pick up the incorrect statement from the following:
Ends of adjoining rails should be in true alignment
Rail joints should be as strong as the rail section itself
Rail joints should be elastic laterally as well as vertically
Ends of adjoining rails butt against to give a continuity
All the above.
Answer: Option
Explanation:
  • Ends of adjoining rails should be in true alignment: This is correct. Proper alignment ensures smooth passage of trains and prevents excessive wear and tear.
  • Rail joints should be as strong as the rail section itself: Ideally, this is the goal. However, in reality, joints are often the weakest points in a rail track. Modern welding techniques are improving joint strength.
  • Rail joints should be elastic laterally as well as vertically: This is correct. Elasticity allows the track to absorb vibrations and impacts from moving trains, reducing stress on the rails and supporting structure.
  • Ends of adjoining rails butt against to give a continuity: This is incorrect. Rails are not simply butted together. A small gap is left between the rail ends to allow for thermal expansion. If they were butted directly, the rails would buckle in hot weather. Joints are designed to bridge this gap while maintaining alignment and load transfer.
33.
Staggered rail joints are generally provided
on curves
on tangents
on bridges
in tunnels.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Bull headed rails are generally provided on
points and crossing
straight tangents
curved tracks
metre gauge tracks
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
The check rails are placed opposite the crossing so that
it is symmetrically placed opposite nose of crossing
its one-third length is ahead of the nose of crossing
its two-third length is ahead of the nose of crossing
its three fourth length is ahead of the nose of crossing.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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