Railway Bridge And Tunnel Engineering Set 4

Civil Engineering

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This set of Railway Bridge and Tunnel Engineering Multiple Choice Questions & Answers (MCQs) focuses on Railway Bridge And Tunnel Engineering Set 4

Q1 | If L1 and L2 are actual and theoretical lengths of a tongue rail, d is heel divergence and tis thickness
  • sin 1 (d - t/
  • tan 1 (d - t/
  • tan 1 (d - t/
Answer: sin 1 (d - t/
Q2 | If a is average number of peaks more than 10 mm of unevenness per kilometre, b is average number peaks more than 6 mm for gauge variation per kilometre and c is average number of peaks more than 2 mm twist per metre, then composite current recording index (Ic), as recommended by Indian Northern Railways, is
  • Ic = 10 - a - b - c/4
  • Ic = 20 - a - b - c/4
  • Ic = 30 - a - b - c/4
  • Ic = 40 - a - b - c/4
Answer: Ic = 40 - a - b - c/4
Q3 | Minimum depth of ballast cushion for a Broad Gauge wooden sleeper of size 275 × 25 ×13 cm with 75 cm sleeper spacing is
  • 15 cm
  • 20 cm
  • 25 cm
  • 30 cm
Answer: 25 cm
Q4 | On a straight railway track, absolute levels at point A on two rails are 100.550 m and 100.530 m and the absolute levels at point B 100 m apart are 100.585 m and 100.515 m respectively, the value of twist of rails per metre run, is
  • 0.4 mm
  • 0.5 mm
  • 0.7 mm
  • 0.8 mm
Answer: 0.5 mm
Q5 | The sleepers resting directly on girder are fastened to the top flange of girder by
  • Hook bolts
  • Dog spikes
  • Fang bolts
  • Rail screws
Answer: Hook bolts
Q6 | The sleepers which satisfy the requirements of an ideal sleeper, are
  • Cast iron sleepers
  • R.C.C. sleepers
  • Steel sleepers
  • Wooden sleepers
Answer: Wooden sleepers
Q7 | The side of a rail diamond may be obtained by dividing the gauge of track by
  • Sine of acute crossing
  • Cosine of acute crossing
  • Tangent of acute crossing
  • Cotangent of acute crossing
Answer: Sine of acute crossing
Q8 | The standard length of rail for Broad Gauge and Meter Gauge are respectively
  • 12 m and 12 m
  • 12 m and 13 m
  • 13 m and 12 m
  • 13 m and 13 m
Answer: 13 m and 12 m
Q9 | Coning of wheels is provided
  • To check lateral movement of wheels
  • To avoid damage to inner faces of rails
  • To avoid discomfort to passengers
  • All the above
Answer: All the above
Q10 | On Indian Railways, angle of crossing between gauge faces of Vee, is generallycalculated by
  • Cole's method
  • Centre line method
  • Isosceles triangle method
  • Both (a) and (b)
Answer: Cole's method
Q11 | Which of the following factors govern the choice of the gauge?(i) Volume and nature of traffic(ii) Speed of train(iii) Physical features of the countryThe correct answer is
  • Only (i)
  • Both (i) and (ii)
  • Both (ii) and (iii)
  • (i), (ii) and (iii)
Answer: (i), (ii) and (iii)
Q12 | Ballast packed below and around the sleepers to transfer the load from sleepers to formation, generally consists of
  • Broken stones
  • Gravels
  • Moorum
  • All the above
Answer: All the above
Q13 | On Indian Railways, the approximate weight of a rail section is determined from theformula
  • Weight of the rail/axial load of locomotive = 1/10
  • Weight of the rail/axial load of locomotive = 1/410
  • Weight of the rail/axial load of locomotive = 1/510
  • Weight of the rail/axial load of locomotive = 1/610
Answer: Weight of the rail/axial load of locomotive = 1/510
Q14 | The maximum degree of curvature for Meter Gauge is limited to
  • 10°
  • 16°
  • 30°
  • 40°
Answer: 16°
Q15 | The grade compensation on B.G. tracks on Indian Railways, is
  • 0.02%
  • 0.03%
  • 0.04%
  • 0.05%
Answer: 0.04%
Q16 | The factor for deciding the type of sleeper, is
  • Easy fixing and removal of rails
  • Provision of sufficient bearing area for rails
  • Initial and maintenance costs
  • All the above
Answer: All the above
Q17 | Number of keys used in CST-9 sleeper is
  • 2
  • 3
  • 4
  • None of the above
Answer: 2
Q18 | Wheels of a rolling stock are provided flanges on
  • Outer side
  • Inner side
  • Both sides
  • Neither side
Answer: Inner side
Q19 | For inspection and packing of ballast, each pot sleeper is provided with
  • One hole
  • Two holes
  • Three holes
  • Four holes
Answer: Two holes
Q20 | The compensation for curvature on gradient for Meter Gauge is given by
  • 70/R
  • 52.5/R
  • 35/R
  • 105/RR
Answer: 52.5/R
Q21 | To design a cross-over between parallel tracks, the required components are:
  • Two switch points, two acute angle crossings and two check rails
  • Two switch points, two acute angle crossings and four check rails
  • Two switch points, two acute angle crossings and six check rails
  • None of these
Answer: Two switch points, two acute angle crossings and four check rails
Q22 | The standard width of ballast for M.G. track in Indian Railways, is kept
  • 3.35 m
  • 3.53 m
  • 2.30 m
  • 2.50 m
Answer: 2.30 m
Q23 | The correct relation between curve lead (CL), switch lead (SL) and lead of crossing (L) is given by
  • CL = L - SL
  • L =CL - SL
  • SL = L + CL
  • L = (CL + SL)/2
Answer: L =CL - SL
Q24 | Pot sleepers are in the form of
  • A number of bowls connected together with a tie bar
  • Two bowls placed under each rail and connected together with a tie bar
  • Two bowls placed under two rails and the one between the rails
  • None of these
Answer: Two bowls placed under each rail and connected together with a tie bar
Q25 | Bending of rail ends due to loose packing under a joint and loose fish Bolts, is known
  • Buckling
  • Hogging
  • Creeping
  • None of these
Answer: Hogging
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