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Civil Engineering :: Railways

  1.  

    Pick up the incorrect statement from the following:

  2. A.

    Sleepers hold the rails at proper gauge on straights

    B.

    Sleepers provide stability to the permanent way

    C.

    Sleepers act as an elastic cushion between rails and ballast

    D.

    Sleepers transfer load of moving trains to ballast

    E.

    None of the these.

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  3. If α is switch angle and R is radius of the turnout, the length of the tongue rail, is

  4. A.

    R sin α

    B.

    R tan α

    C.

    R sin α/2

    D.

    R tan α/2

    E.

    R cos α/2

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  5. The quantity of stone ballast required per metre tangent length, is

  6. A.

    1.15 m3

    B.

    1.14 m3

    C.

    1.13 m3

    D.

    1.12 m3

    E.

    1.11 m3

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  7. The type of switch generally used for B.G. and M.G. tracks, is

  8. A.

    articulated

    B.

    undercut

    C.

    over riding

    D.

    straight cut.

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  9. The difference in the lengths of two diagonals of a rail diamond is

  10. A.

    \( \frac { 2G } { sin a} \) [ cos a/2+sina/2]

    B.

    \( \frac { 2G } { sin a} \)[ cos a/2-sina/2]

    C.

    \( \frac { 2G } { sin a} \)[ sin a/2-cos a/2]

    D.

    \( \frac { 2G } { sin a} \) [ tan a/2 -cot a/2]


  11. For flat bottom sleepers, maximum size of ballast, is

  12. A.
    50 mm
    B.

    40 mm

    C.

    33 mm

    D.

    25 mm

    E.

    20 mm


  13. Coning of wheels

  14. A.

    prevent lateral movement of wheels

    B.

    provide smooth running of trains

    C.

    avoid excessive wear of inner faces of rail

    D.

    all the above.


  15. The sleepers which satisfy the requirements of an ideal sleeper, are

  16. A.

    cast iron sleepers

    B.

    R.C.C. sleepers

    C.

    steel sleepers

    D.

    wooden sleepers.


  17. Arrangement made to divert the trains from one track to another, is known as

  18. A.

    railway point

    B.

    railway crossing

    C.

    turnout

    D.
    railway junction
    E.

    none of these.


  19. At a rail joint, the ends of adjoining rails, are connected with a pair of fish plates and

  20. A.

    2 fish bolts

    B.

    4 fish bolts

    C.

    6 fish bolts

    D.

    8 fish bolts