Quiznetik

Railway Engineering | Set 3

1. angle and R is radius of the turnout, the length of the tongue rail, is

Correct : D. /2

2. Steel sleepers are

Correct : C. 6 mm thick steel sheets with ends bent down

3. Number of dog spikes normally used per rail seat on curved track is

Correct : B. two outside and one inside

4. If sleeper density is M + 7 for 13 m rails, the minimum depth of ballast under wooden sleepers (25 cm × 13 cm), is

Correct : B. 20 cm

5. Minimum composite sleeper index for wooden sleepers used over bridge girders, is

Correct : A. 1455

6. The shape of transition curve used by Indian Railways is

Correct : A. cubic parabola

7. Gauge of a permanent way, is

Correct : A. minimum distance between running faces of rails

8. If w is width of sleepers, s is sleeper spacing and d is depth of ballast then

Correct : A. d = (s - w)/2

9. The standard width of ballast for B.G. Track in Indian Railways, is kept

Correct : A. 3.35 m

10. In India, metre gauge permanent way was adopted in

Correct : D. 1871

11. Which one of the following rail failures is caused by loose fish bolts at expansion joints?

Correct : A. crushed head

12. Best wood for wooden sleepers is

Correct : D. teak

13. Bull headed rails are generally provided on

Correct : A. points and crossing

14. The type of bearing plate used in all joints and on curves to give better bearing area to the rails is

Correct : B. mild steel canted bearing plate

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

Correct : A. flat footed rails

16. Cast iron sleeper, is

Correct : D. all the above

17. Gauge is the distance between

Correct : B. running faces of rails

18. Pick up the correct statement from the following:

Correct : D. all the above

19. Rail section is generally designated by its

Correct : C. weight per metre length

20. At points and crossings, the total number of sleepers for 1 in 12 turnouts in Broad Gauge is

Correct : C. 70

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

Correct : D. 1.11 m3

22. Weight and cross section of the rails are decided on

Correct : D. all the above

23. Number of switches provided on a Gaunt-letted track is

Correct : D. none of the above

24. If S is cant deficiency in centimetres and V is maximum permissible speed in kmph, the maximum length of transition curves, is

Correct : A. sv/13.6

25. A train is hauled by 4-8-2 locomotive. The number of driving wheels in this locomotive is

Correct : B. 8

26. Maximum cant deficiency prescribed on Indian Board Gauge Railways, is

Correct : D. 100 mm

27. Vertical curves are provided where algebraic difference between grades is equal to or

Correct : D. more than 4mm/m

28. A scissors cross over consists of one diamond and

Correct : D. four turn outs

29. The slipping of driving wheels of locomotives on the rail surface causes

Correct : A. wheel burns

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

Correct : C. teak

31. To ensure exact gauge, the gauge tie plates are provided at

Correct : C. both (a) and (b)

32. If G is gauge is metres, V is speed of trains in km/hour and R is radius of a curve in metres, the equilibrium super elevation is

Correct : C. gv²/127r

33. The height of the center of arm of a semaphore signal above the ground is

Correct : C. 7.5 m

34. A wing rail is renewed or reconditioned if its maximum vertical wear is

Correct : A. 9.5 m

35. The steepest gradient permissible on a 2.5° curve for Broad Gauge line having ruling gradient of 1 in 200 is

Correct : A. 1 in 250

36. The tread of wheels is provided an outward slope of

Correct : C. 1 in 20

37. When the rail ends rest on a joint sleeper, the joint is termed as

Correct : A. supported rail joint

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

Correct : A. black cotton soil

39. Number of fish bolts per fish plate is

Correct : B. 4

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

Correct : A. 50 mm

41. Which of the following turnouts is most commonly used for goods train on Indian Railways?

Correct : A. 1 in 8\/2

42. On Indian Railways standard length of rails for M.G. track, is

Correct : C. 39 ft (11.89 m)

43. The nominal size of ballast used for points and crossings is

Correct : A. 25 mm

44. The overall length of a turn out is the distance between the end of stock rail and

Correct : A. heel of crossing

45. The width of foot for 90 R rail section is

Correct : C. 136.5 mm

46. Monnier, the inventor of R.C.C., suggested the introduction of reinforced cement concert sleepers for the railways in

Correct : C. 1877

47. Minimum packing space provided between two sleepers, is between

Correct : C. 30 to 35 cm

48. Dog spikes are used for fixing rail to the

Correct : A. wooden sleepers

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

Correct : B. slightly less than the gauge distance

50. Anti-creep bearing plates are provided on

Correct : D. none of the above

51. A mono-block sleeper has

Correct : C. trapezoidal section

52. The distance through which the tongue rail moves laterally at the toe of the switch for movement of trains is called

Correct : C. throw of the switch

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

Correct : A. wooden sleepers

54. Width of the top portion of a flat footed, rail, is

Correct : C. 66.77 mm

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

Correct : D. 4°

56. Minimum depth of ballast prescribed of B.G. trunk lines of Indian Railways, is

Correct : C. 25 cm

57. Boxing of ballast is done

Correct : B. at the rails

58. Maximum wheel base distance provided on Indian B.G. tracks, is

Correct : C. 6.096 m

59. A triangle used for turning the face of locomotives, consists of

Correct : C. two turn outs and one split

60. To hold the adjoining ends of rails in correct horizontal and vertical planes, the rail fastenings used are

Correct : A. fish plates

61. The sleeper density on main lines is

Correct : B. increased

62. The speed of a locomotive, in India, on broad gauge is restricted between

Correct : C. 96 to 120 km/h

63. When two tracks of same or different gauges cross each other at any angle, the crossing provided is

Correct : A. diamond crossing

64. The gauge should be

Correct : A. 6 mm

65. The total effective area of the pot sleepers is equal to the effective bearing area of a

Correct : B. wooden sleeper

66. At the time of pressing the steel sleepers, a cant of 1 in 20 is provided towards the centre.

Correct : A. True

67. Gib and cotters for connecting pot sleepers are so casted that by interchanging them gauge is slackened by

Correct : A. 3.18 mm

68. In plate sleepers, the plate is provided with projecting ribs in the bottom in order to

Correct : D. both (a) and (b)

69. The rail gauge is the distance between

Correct : B. running faces of rails

70. To increase the strength of plate sleepers, the

Correct : B. stiffeners

71. The levers for

Correct : A. points

72. Creeping of rails can be checked by using

Correct : C. anchors

73. The height of the platform above the rail surface for broad gauge tracks should be

Correct : C. 762 to 838 mm

74. Two holes are provided in each pot sleeper for inspection and packing of ballast.

Correct : A. Agree

75. In India, the method used for plate laying is

Correct : C. telescopic method

76. The resistance of the train is due to

Correct : D. all of these

77. A curve is represented by the degree of the curvature subtended by a chord of

Correct : C. 30.48 m

78. The clear distance between inner faces of rails near their tops is known as

Correct : B. gauge

79. Which of the following bolt is not used in rail tracks?

Correct : C. Eye bolt

80. The Indian railway has been divided into

Correct : D. sixteen zones

81. To prevent the flanges of wheels from rubbing the inside face of the rail, the distance between the inside edges of flanges is kept

Correct : B. less than

82. Two fish plates are fixed at each rail joint with eight fish bolts.

Correct : B. Wrong

83. Two cross-overs are laid between two tracks in the case of

Correct : B. scissors crossing

84. An extra width of ballast is not provided on the outer side of curve, if its degree is 3?.

Correct : A. Correct

85. Creep is greater

Correct : C. both (a) and (b)

86. The choice of gauge depends upon

Correct : D. all of these

87. The system of signalling used on single-line working, is

Correct : B. space interval system

88. A CST - 9 sleeper is

Correct : C. a combination of plate, pot and box sleeper

89. Scotch blocks are used for preventing the movement of vehicles beyond the dead end sidings.

Correct : A. Right

90. Which of the following statement is wrong?

Correct : D. On curves, the outer wheel has to travel lesser distance than the inner wheel.

91. When the degree of curve is more than 3?, the rails are bent to the correct curvature before fixing them on to the sleepers.

Correct : A. Yes

92. The sleepers in the form of two bowls placed under each rail and connected together by a tie - bar, are known as

Correct : A. pot sleepers

93. A standard rail point should

Correct : D. all of the above

94. The distance between the centre line of the track, for narrow gauge, and the platform should bot be less than 1.219 m.

Correct : A. Correct

95. A welded rail joint is generally

Correct : B. suspended

96. The height of the platform above the rail surface for narrow gauge tracks should be

Correct : A. 229 to 406 mm

97. The number of a crossing is defined as the cotangent of the crossing angle.

Correct : A. True

98. The adjustment of rails is usually needed when creep exceeds

Correct : C. 150 mm

99. The gauge representing the maximum width and height up to which a railway vehicle may be built, is known as

Correct : C. loading gauge

100. The rail section, now-a-days, used in Indian railways is

Correct : C. bull headed type