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Civil Engineering :: Railways

  1. In India the rails are manufactured by

  2. A.

    open hearth process

    B.

    duplex process

    C.

    both (a) and (b)

    D.

    neither (a) nor (b)

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  3. Rail section first designed on Indian railways, was

  4. A.

    double headed

    B.

    bull headed

    C.

    flat footed

    D.

    (a) and (b) simultaneously

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  5. A scissors cross-over consists of

  6. A.
    two pairs of points, four acute angle crossings and two obtuse angle crossings
    B.

    four pairs of points, four acute angle crossings and four obtuse angle crossings

    C.

    four pairs of points, six acute angle crossings and two obtuse angle crossings

    D.

    two pairs of points, six acute angle crossings and four obtuse angle crossings.

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  7. To prevent percolation of water into formation, moorum is used as a blanket for

  8. A.

    black cotton soil

    B.
    sandy soil
    C.

    clayey soil

    D.

    all the above.

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  9. Distance between inner faces of the flanges, is kept

  10. A.

    equal to the gauge distance

    B.

    slightly less than the gauge distance

    C.
    slightly more than the gauge distance
    D.
    none of these.

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  11. Wooden sleepers used on the girders of bridges, are generally made of

  12. A.

    sal

    B.

    chir

    C.

    teak

    D.
    deodar.

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  13. If L1 and L2 are actual and theoretical lengths of a tongue rail, d is heel divergence and t is thickness of tongue rail at toe, the switch angle α is

  14. A.

    \( sin^-1 \frac { d-t } { L1 } \)

    B.

    \( tan^-1 \frac { d-t } { L1 } \)

    C.

    \( sin^-1 \frac { d-t } { L2 } \)

    D.

    \( tan^-1 \frac { d-t } { L2 } \)

    E.

    \( cot^-1 \frac { d-t } { L2 } \)


  15. If D is distance between centres of two parallel track of gauge G, then, total length of cross-over (from the point of commencement to the point of termination) with an intermediate straight portion and N crossing, is given by

  16. A.

    DN + G (N +\( \sqrt{1+N^2}\))

    B.

    DN + G (2N +\( \sqrt{1+N^2}\))

    C.

    DN + G (3N + \( \sqrt{1+N^2}\))

    D.

    DN + G (4N +\( \sqrt{1+N^2}\))


  17. If a 0.7% upgrade meets a 0.65% downgrade at a summit and the permissible rate of change of grade per chain length is 0.10%, the length of the vertical curve, is

  18. A.

    10 chains

    B.

    12 chains

    C.

    14 chains

    D.

    16 chains


  19. Overall depth of a dog spike, is

  20. A.

    120.6 mm

    B.

    155.90 mm

    C.

    135 mm

    D.

    150 mm

    E.

    none of these.

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