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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 9

Q1 | Smith diamond is provided if the angle of diamond is less than

- 2°
- 4°
- 6°
- 8°

Q2 | 60 R rails are mostly used in

- Broad Gauge
- Metre Gauge
- Narrow Gauge
- None of the above

Q3 | A welded rail joint is generally

- Supported on a sleeper
- Supported on a metal plate
- Suspended
- None of these

Q4 | If the standard length of a crossing is 480 cm, the number of crossing is

- 1 in 8½ of B.G.
- 1 in 8½ of M.G.
- Both (a) and (b)
- None of these

Q5 | Width of ballast section for Broad Gauge is

- 1.83 m
- 2.25 m
- 3.35 m
- 4.30 m

Q6 | Minimum length of a transition curve required for

- 2° curves for a maximum permissible speed of 135 km/hr, is 220 metres
- 4° curves for a maximum permissible speed of 95 km/hr, is 220 metres
- 6° curves for a maximum permissible speed of 80 km/hr, is 220 metres
- All the above

Q7 | For points and crossings, maximum size of ballast, is

- 50 mm
- 40 mm
- 30 mm
- 25 mm

Q8 | Which of the following methods of designation of crossing is mostly used in India?

- Center line method
- Right angle method
- Isosceles angle method
- None of the above

Q9 | For calculating the length of curve lead (C.L.), the correct formula is

- C.L. = G. /2
- C.L. = IG)
- C.L. = 2 GN
- All the above

Q10 | In a railway track, permissible gauge with tolerance under loaded condition, is

- G + 0.1 mm
- G + 1.5 mm
- G - 1.0 mm
- G - 1.5 mm

Q11 | Yellow light-hand signal indicates

- Stop
- Proceed
- Proceed cautiously
- None of the above

Q12 | The first Indian railway was laid in

- 1775
- 1804
- 1825
- 1853

Q13 | Sand may be used as ballast for

- Wooden sleepers
- Steel sleepers
- Cast iron sleepers
- All the above

Q14 | What will be the curve lead for a 1 in 8.5 turnout taking off from a straight broad gaugetrack?

- 28.49 m
- 21.04 m
- 14.24 m
- 7.45 m

Q15 | A scissors cross-over consists of

- Two pairs of points, four acute angle crossings and two obtuse angle crossings
- Four pairs of points, four acute angle crossings and four obtuse angle crossings
- Four pairs of points, six acute angle crossings and two obtuse angle crossings
- Two pairs of points, six acute angle crossings and four obtuse angle crossings

Q16 | The effective bearing area of all types of sleepers, is

- 0.40 m2
- 0.42 m2
- 0.44 m2
- 0.46 m2

Q17 | The cross-sectional area of 52 kg flat footed rail is

- 6155 mm²
- 6615 mm²
- 7235 mm²
- 7825 mm²

Q18 | angle and R is radius of the turnout, the length of the tongue rail, is

- R
- R
- /2
- /2

Q19 | Steel sleepers are

- Rectangular is cross section throughout
- Hollow circular pipes
- 6 mm thick steel sheets with ends bent down
- 6 mm thick steel sheets with ends bent up

Q20 | Number of dog spikes normally used per rail seat on curved track is

- One on either side
- Two outside and one inside
- One outside and two inside
- Two outside and two inside

Q21 | Minimum composite sleeper index for wooden sleepers used over bridge girders, is

- 1455
- 1355
- 1255
- 1155

Q22 | The shape of transition curve used by Indian Railways is

- Cubic parabola
- Spiral
- Sine curve
- Lemniscates of Bernoulli

Q23 | Gauge of a permanent way, is

- Minimum distance between running faces of rails
- Minimum distance between outer faces of rails
- Distance between centres of rails
- Width of formation

Q24 | If w is width of sleepers, s is sleeper spacing and d is depth of ballast then

- d = (s - w)/2
- d = (s - w)/3
- d = (s - w)/4
- d = (s - w)/5

Q25 | The reception signal is(i) Outer signal(ii) Home signal(iii) Starter(iv) Advanced starterThe correct answer is

- (i) and (ii)
- (ii) and (iii)
- (iii) and (iv)
- (i) and (iv)