What is the primary function of a fish plate in rail joints?

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RRB JE CE 22 Apr 2025 Shift 1 CBT 2 Official Paper
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  1. To reduce track curvature
  2. To provide better track drainage
  3. To join two rails together
  4. To hold the sleepers together

Answer (Detailed Solution Below)

Option 3 : To join two rails together
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Detailed Solution

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Explanation:

Primary function of a fish plate:

  • A fish plate (also known as a rail joint or joint bar) is used to connect two rails together at a rail joint.

  • It is bolted to the ends of adjacent rails to maintain continuity, alignment, and stability in the track.

  • Fish plates are typically used in rail tracks to ensure the proper transfer of loads between connected rails and to prevent separation due to thermal expansion or mechanical stresses.

 Additional Information

  • Rail continuity: Fish plates help in maintaining the continuous flow of forces along the track, allowing for smooth and stable operation of trains.

  • Maintenance: They are often used to make repairs or provide a temporary solution when replacing rails.

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