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Civil Engineering :: Railways

  1.  

    The distance between theoretical nose of crossing and actual nose of crossing for practical purposes, is

  2. A.

    Nose thickness x tan α

    B.

    Nose thickness x cot α

    C.

    Nose thickness x sin α

    D.

    Nose thickness x cos α

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  3. The main advantage of a long rail over short one, is

  4. A.

    it requires less number of rail fastenings

    B.

    it provides smooth running of trains

    C.

    it involves less maintenance cost

    D.

    it provides conform to passengers

    E.

    all the above.

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  5. Widening of gauge is provided if degree of the curve, is

  6. A.

    3° or less

    B.

    3° to 4 \(\frac { 1 } { 2 } \)

    C.

    more than 4\(\frac { 1 } { 2 } \)

    D.

    none of these.


  7. Continuity of electric current across welded rail joints, is maintained by

  8. A.
    welding ends of a wire to each rail
    B.
    placing an insulated plate underneath the rails
    C.

    placing insulation in expansion gaps

    D.

    none of these.


  9. Sand may be used as ballast for

  10. A.

    wooden sleepers

    B.

    steel sleepers

    C.

    cast iron sleepers

    D.

    all the above.

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  11. Cast iron sleeper, is

  12. A.

    pot sleeper

    B.

    box sleeper

    C.

    Duplex sleeper

    D.

    plate sleeper

    E.

    All the above.

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  13. On Indian Railways, angle of crossing between gauge faces of Vee, is generally calculated by

  14. A.

    Cole's method

    B.

    Centre line method

    C.

    Isosceles triangle method

    D.

    both (a) and (b)

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  15. For an effective administration, Indian railway system has been divided into

  16. A.
    four railway zones
    B.

    six railway zones

    C.

    seven railway zones

    D.

    eight railway zones

    E.

    nine railway zones.

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  17. In a railway track, permissible gauge with tolerance under loaded condition, is

  18. A.

    G + 0.1 mm

    B.

    G + 1.5 mm

    C.

    G - l.O mm

    D.

    G - 1.5mm

    E.
    G - 20 mm

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  19.  

    A turn-in-curve is defined as

  20. A.

    a curve introduced between two straights

    B.

    a reverse curve

    C.

    a reverse curve introduced in continuity of a turn out

    D.

    a spiral transition curve.

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