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Civil Engineering :: Railways

  1. Boxing of ballast is done

  2. A.

    under rails

    B.

    at the rails

    C.

    in between two rails

    D.

    in between two sleepers.

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  3. Best ballast contains stones varying in size from

  4. A.

    1.5 cm to 3 cm

    B.

    2.0 cm to 4 cm

    C.

    2.0 cm to 5 cm

    D.

    2.5 cm to 6 cm

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  5. For holding a rail in position, no chairs are used for

  6. A.

    flat footed rails

    B.

    bull headed rails

    C.

    double headed rails

    D.

    both (a) and (b)

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  7. Distance between the inner rail and check rail provided on sharp curve, is

  8. A.

    40 mm

    B.

    42 mm

    C.

    44 mm

    D.
    46 mm
    E.

    50 mm

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  9. Coal ash (or cinder) is used in initial stages of a new construction of railway for

  10. A.
    wooden sleepers
    B.

    steel sleepers

    C.

    cast iron sleepers

    D.

    none of these.

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  11. Pot sleepers are in the form of

  12. A.

    a number of bowls connected together with a tie bar

    B.

    two bowls placed under each rail and connected together with a tie bar

    C.

    two bowls placed under two rails and the one between the rails

    D.

    none of these.

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  13.  

    In railways a triangle is mainly provided for

  14. A.

    diverting trains from the main line to branch line

    B.

    crossing over between parallel tracks

    C.
    changing direction of engines through 180°
    D.

    shunting wagons in yards.

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  15. A kink is made in stock rails, ahead of the toe of switch at a distance of

  16. A.

    10 cm

    B.

    15 cm

    C.

    20 cm

    D.

    30 cm

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  17. If L is length of a rail and R is the radius of a curve, the versine h for the curve, is

  18. A.

    a = \( \frac { L } { 4R } \)

    B.

    a = \( \frac { L ^2} { 4R } \)

    C.

    h = \( \frac { L ^2} { 8R } \)

    D.

    h = \( \frac { L ^2} { 16R } \)

    E.

    h = \( \frac { L ^2} { 6R } \)


  19. Rails are bent to correct curvature if the degree of curve, is more than

  20. A.

    B.

    C.

    D.

    E.

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