Quiznetik
Railway Bridge and Tunnel Engineering | Set 3
1. Smith diamond is provided if the angle of diamond is less than
A. 2°
B. 4°
C. 6°
D. 8°
Correct : C. 6°
2. 60 R rails are mostly used in
A. Broad Gauge
B. Metre Gauge
C. Narrow Gauge
D. None of the above
Correct : B. Metre Gauge
3. A welded rail joint is generally
A. Supported on a sleeper
B. Supported on a metal plate
C. Suspended
D. None of these
Correct : C. Suspended
4. If the standard length of a crossing is 480 cm, the number of crossing is
A. 1 in 8½ of B.G.
B. 1 in 8½ of M.G.
C. Both (a) and (b)
D. None of these
Correct : C. Both (a) and (b)
5. Width of ballast section for Broad Gauge is
A. 1.83 m
B. 2.25 m
C. 3.35 m
D. 4.30 m
Correct : C. 3.35 m
6. Minimum length of a transition curve required for
A. 2° curves for a maximum permissible speed of 135 km/hr, is 220 metres
B. 4° curves for a maximum permissible speed of 95 km/hr, is 220 metres
C. 6° curves for a maximum permissible speed of 80 km/hr, is 220 metres
D. All the above
Correct : D. All the above
7. For points and crossings, maximum size of ballast, is
A. 50 mm
B. 40 mm
C. 30 mm
D. 25 mm
Correct : D. 25 mm
8. Which of the following methods of designation of crossing is mostly used in India?
A. Center line method
B. Right angle method
C. Isosceles angle method
D. None of the above
Correct : B. Right angle method
9. For calculating the length of curve lead (C.L.), the correct formula is
A. C.L. = G. /2
B. C.L. = IG)
C. C.L. = 2 GN
D. All the above
Correct : D. All the above
10. In a railway track, permissible gauge with tolerance under loaded condition, is
A. G + 0.1 mm
B. G + 1.5 mm
C. G - 1.0 mm
D. G - 1.5 mm
Correct : B. G + 1.5 mm
11. Yellow light-hand signal indicates
A. Stop
B. Proceed
C. Proceed cautiously
D. None of the above
Correct : C. Proceed cautiously
12. The first Indian railway was laid in
A. 1775
B. 1804
C. 1825
D. 1853
Correct : D. 1853
13. Sand may be used as ballast for
A. Wooden sleepers
B. Steel sleepers
C. Cast iron sleepers
D. All the above
Correct : C. Cast iron sleepers
14. What will be the curve lead for a 1 in 8.5 turnout taking off from a straight broad gauge track?
A. 28.49 m
B. 21.04 m
C. 14.24 m
D. 7.45 m
Correct : A. 28.49 m
15. A scissors cross-over consists of
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
Correct : C. Four pairs of points, six acute angle crossings and two obtuse angle crossings
16. The effective bearing area of all types of sleepers, is
A. 0.40 m2
B. 0.42 m2
C. 0.44 m2
D. 0.46 m2
Correct : D. 0.46 m2
17. The cross-sectional area of 52 kg flat footed rail is
A. 6155 mm²
B. 6615 mm²
C. 7235 mm²
D. 7825 mm²
Correct : B. 6615 mm²
18. angle and R is radius of the turnout, the length of the tongue rail, is
A. R
B. R
C. /2
D. /2
Correct : D. /2
19. Steel sleepers are
A. Rectangular is cross section throughout
B. Hollow circular pipes
C. 6 mm thick steel sheets with ends bent down
D. 6 mm thick steel sheets with ends bent up
Correct : C. 6 mm thick steel sheets with ends bent down
20. Number of dog spikes normally used per rail seat on curved track is
A. One on either side
B. Two outside and one inside
C. One outside and two inside
D. Two outside and two inside
Correct : B. Two outside and one inside
21. Minimum composite sleeper index for wooden sleepers used over bridge girders, is
A. 1455
B. 1355
C. 1255
D. 1155
Correct : A. 1455
22. The shape of transition curve used by Indian Railways is
A. Cubic parabola
B. Spiral
C. Sine curve
D. Lemniscates of Bernoulli
Correct : A. Cubic parabola
23. Gauge of a permanent way, is
A. Minimum distance between running faces of rails
B. Minimum distance between outer faces of rails
C. Distance between centres of rails
D. Width of formation
Correct : A. Minimum distance between running faces of rails
24. If w is width of sleepers, s is sleeper spacing and d is depth of ballast then
A. d = (s - w)/2
B. d = (s - w)/3
C. d = (s - w)/4
D. d = (s - w)/5
Correct : A. d = (s - w)/2
25. The reception signal is (i) Outer signal (ii) Home signal (iii) Starter (iv) Advanced starter The correct answer is
A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
D. (i) and (iv)
Correct : A. (i) and (ii)
26. The standard width of ballast for B.G. Track in Indian Railways, is kept
A. 3.35 m
B. 3.53 m
C. 2.35 m
D. 2.53 m
Correct : A. 3.35 m
27. In India, metre gauge permanent way was adopted in
A. 1855
B. 1860
C. 1866
D. 1871
Correct : D. 1871
28. Which one of the following rail failures is caused by loose fish bolts at expansion joints?
A. Crushed head
B. Angular break
C. Split head
D. Transverse fissures
Correct : A. Crushed head
29. Best wood for wooden sleepers is
A. Chir
B. Deodar
C. Sal
D. Teak
Correct : D. Teak
30. Bull headed rails are generally provided on
A. Points and crossing
B. Straight tangents
C. Curved tracks
D. Metre gauge tracks
Correct : A. Points and crossing
31. The type of bearing plate used in all joints and on curves to give better bearing area to the rails is
A. Flat mild steel bearing plate
B. Mild steel canted bearing plate
C. Cast iron anti-creep bearing plate
D. None of the above
Correct : B. Mild steel canted bearing plate
32. For holding a rail in position, no chairs are used for
A. Flat footed rails
B. Bull headed rails
C. Double headed rails
D. Both (a) and (b)
Correct : A. Flat footed rails
33. Cast iron sleeper, is
A. Pot sleeper
B. Box sleeper
C. Duplex sleeper
D. All the above
Correct : D. All the above
34. Gauge is the distance between
A. Center to center of rails
B. Running faces of rails
C. Outer faces of rails
D. None of the above
Correct : B. Running faces of rails
35. Pick up the correct statement from the following:
A. Rails are directly laid over hard wooden sleepers and fixed with spikes
B. Adzing is done on hard wooden sleepers
C. Bearing plates are used on soft wooden sleepers
D. All the above
Correct : D. All the above
36. Rail section is generally designated by its
A. Total weight
B. Total length
C. Weight per metre length
D. Area of its cross-section
Correct : C. Weight per metre length
37. At points and crossings, the total number of sleepers for 1 in 12 turnouts in Broad Gauge is
A. 51
B. 62
C. 70
D. 78
Correct : C. 70
38. The quantity of stone ballast required per metre tangent length, is
A. 1.15 m3
B. 1.14 m3
C. 1.13 m3
D. 1.11 m3
Correct : D. 1.11 m3
39. Weight and cross section of the rails are decided on
A. Gauge of tracks
B. Speed of trains
C. Spacing of sleepers
D. All the above
Correct : D. All the above
40. Number of switches provided on a Gaunt-letted track is
A. 1
B. 2
C. 3
D. None of the above
Correct : D. None of the above
41. If S is cant deficiency in centimetres and V is maximum permissible speed in kmph, the maximum length of transition curves, is
A. SV/13.6
B. SV/19.8
C. SV/127
D. SV/16.8
Correct : A. SV/13.6
42. A train is hauled by 4-8-2 locomotive. The number of driving wheels in this locomotive is
A. 4
B. 8
C. 12
D. 14
Correct : B. 8
43. Maximum cant deficiency prescribed on Indian Board Gauge Railways, is
A. 40 mm
B. 50 mm
C. 75 mm
D. 100 mm
Correct : D. 100 mm
44. Vertical curves are provided where algebraic difference between grades is equal to or
A. Less than 2 mm/m
B. More than 2 mm/m
C. Less than 4 mm/m
D. More than 4mm/m
Correct : D. More than 4mm/m
45. A scissors cross over consists of one diamond and
A. one turn out
B. Two turn outs
C. Three turn outs
D. Four turn outs
Correct : D. Four turn outs
46. The slipping of driving wheels of locomotives on the rail surface causes
A. Wheel burns
B. Hogging of rails
C. Scabbing of rails
D. Corrugation of rails
Correct : A. Wheel burns
47. Wooden sleepers used on the girders of bridges, are generally made of
A. Sal
B. Chir
C. Teak
D. Deodar
Correct : C. Teak
48. To ensure exact gauge, the gauge tie plates are provided at
A. Toe of the switch
B. Nose of crossing
C. Both (A) and (B)
D. None of the above
Correct : C. Both (A) and (B)
49. 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
A. GV²/R
B. GV²/17R
C. GV²/127R
D. GV²/130R
Correct : C. GV²/127R
50. The height of the center of arm of a semaphore signal above the ground is
A. 5.5 m
B. 6.5 m
C. 7.5 m
D. 8.5 m
Correct : C. 7.5 m
51. A wing rail is renewed or reconditioned if its maximum vertical wear is
A. 9.5 m
B. 7.5 m
C. 5.5 m
D. 5.0 m
Correct : A. 9.5 m
52. The steepest gradient permissible on a 2.5° curve for Broad Gauge line having ruling gradient of 1 in 200 is
A. 1 in 250
B. 1 in 222
C. 1 in 235
D. 1 in 275
Correct : A. 1 in 250
53. The tread of wheels is provided an outward slope of
A. 1 in 10
B. 1 in 15
C. 1 in 20
D. 1 in 25
Correct : C. 1 in 20
54. When the rail ends rest on a joint sleeper, the joint is termed as
A. Supported rail joint
B. Suspended rail joint
C. Bridge joint
D. Base joint
Correct : A. Supported rail joint
55. To prevent percolation of water into formation, moorum is used as a blanket for
A. Black cotton soil
B. Sandy soil
C. Clayey soil
D. All the above
Correct : A. Black cotton soil
56. Number of fish bolts per fish plate is
A. 2
B. 4
C. 5
D. 6
Correct : B. 4
57. For flat bottom sleepers, maximum size of ballast, is
A. 50 mm
B. 40 mm
C. 33 mm
D. 25 mm
Correct : A. 50 mm
58. Which of the following turnouts is most commonly used for goods train on Indian Railways?
A. 1 in 8'/2
B. 1 in 12
C. 1 in 16
D. 1 in 20
Correct : A. 1 in 8'/2
59. On Indian Railways standard length of rails for M.G. track, is
A. 33 ft (10.06 m)
B. 36 ft (10.97 m)
C. 39 ft (11.89 m)
D. 42 ft (12.8 m)
Correct : C. 39 ft (11.89 m)
60. The nominal size of ballast used for points and crossings is
A. 25 mm
B. 40 mm
C. 50 mm
D. 10 mm
Correct : A. 25 mm
61. The overall length of a turn out is the distance between the end of stock rail and
A. Heel of crossing
B. Actual nose of crossing
C. Throat of crossing
D. Toe of crossing
Correct : A. Heel of crossing
62. The width of foot for 90 R rail section is
A. 100 mm
B. 122.2 mm
C. 136.5 mm
D. 146.0 mm
Correct : C. 136.5 mm
63. Monnier, the inventor of R.C.C., suggested the introduction of reinforced cement concert sleepers for the railways in
A. 1857
B. 1867
C. 1877
D. 1887
Correct : C. 1877
64. Switch angle depends on (i) Heel divergence (ii) Length of tongue rail (iii) Flange-way clearance (iv) Throw of switch The correct answer is
A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
D. (i) and (iv)
Correct : A. (i) and (ii)
65. Minimum packing space provided between two sleepers, is between
A. 20 to 25 cm
B. 25 to 30 cm
C. 30 to 35 cm
D. 35 to 40 cm
Correct : C. 30 to 35 cm
66. Dog spikes are used for fixing rail to the
A. Wooden sleepers
B. CST-9 sleepers
C. Steel trough sleepers
D. Concrete sleepers
Correct : A. Wooden sleepers
67. Distance between inner faces of the flanges, is kept
A. Equal to the gauge distance
B. Slightly less than the gauge distance
C. Slightly more than the gauge distance
D. None of these
Correct : B. Slightly less than the gauge distance
68. Anti-creep bearing plates are provided on
A. Bridges and approaches
B. Joints
C. Both (A) and (B)
D. None of the above
Correct : D. None of the above
69. A mono-block sleeper has
A. Square section
B. Rectangular section
C. Trapezoidal section
D. Semi-circular section
Correct : C. Trapezoidal section
70. The distance through which the tongue rail moves laterally at the toe of the switch for movement of trains is called
A. Flange-way clearance
B. Heel divergence
C. Throw of the switch
D. None of the above
Correct : C. Throw of the switch
71. Coal ash (or cinder) is used in initial stages of a new construction of railway for
A. Wooden sleepers
B. Steel sleepers
C. Cast iron sleepers
D. None of these
Correct : A. Wooden sleepers
72. Normally the limiting value of cant is
A. G/8
B. G/10
C. G/12
D. G/15
Correct : B. G/10
73. Width of the top portion of a flat footed, rail, is
A. 69.85 mm
B. 63.50 mm
C. 66.77 mm
D. 136.52 mm
Correct : C. 66.77 mm
74. Rails are bent to correct curvature if the degree of curve, is more than
A. 1°
B. 2°
C. 3°
D. 4°
Correct : D. 4°
75. Minimum depth of ballast prescribed of B.G. trunk lines of Indian Railways, is
A. 20 cm
B. 15 cm
C. 25 cm
D. 30 cm
Correct : C. 25 cm
76. Boxing of ballast is done
A. Under rails
B. At the rails
C. In between two rails
D. In between two sleepers
Correct : B. At the rails
77. Maximum wheel base distance provided on Indian B.G. tracks, is
A. 4.096 m
B. 5.096 m
C. 6.096 m
D. 7.096 m
Correct : C. 6.096 m