Railway Bridge And Tunnel Engineering Set 8

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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 8

Q1 | The standard dimensions of a wooden sleeper for a B.G. railway track are
  • 2.74 m × 25 cm × 13 cm
  • 1.83 m × 20 cm × 11 cm
  • 1.52 m × 15 cm × 10 cm
  • 1.75 cm × 20 cm × 12 cm
Q2 | The limiting value of cant excess for Broad Gauge is
  • 55 mm
  • 65 mm
  • 75 mm
  • 100 mm
Q3 | Indian Railways detects the rail flow by
  • Mitsubishi Rail flow dector
  • Soni Rail flow dector
  • Audi-gauge Rail flow detector
  • Kraut Kramer Rail flow detector
Q4 | The gradient on which an additional engine is required to negotiate the gradient, is called
  • Momentum gradient
  • Pusher gradient
  • Ruling gradient
  • Steep gradient
Q5 | If D is distance between centres of two parallel tracks of gauge G with entire curved leads and equal angles of crossing, total length of crossover, is
  • D (4R - 2G - D)]
  • D (3R - 2G -D)]
  • D (3R + 2G - D)]
  • D (4 + 2G - D)]
Q6 | Which of the following mechanical devices is used to ensure that route cannot be changed while the train is on the point even after putting back the signal?
  • Detectors
  • Point lock
  • Iock bar
  • Stretcher bar
Q7 | Pot sleepers are used if degree of the curve does not exceed
Q8 | Burnettising is done for the preservation of
  • Wooden sleepers
  • Rails
  • Ballast
  • None of these
Q9 | Consider the following statements:Automatic signalling system results in1. Greater risk2. Higher efficiency3. Avoidance of block instruments4. Higher operating costOf these statements
  • 1 and 2 are correct
  • 3 and 4 are correct
  • 1 and 4 are correct
  • 2 and 3 are correct
Q10 | A kink is made in stock rails, ahead of the toe of switch at a distance of
  • 10 cm
  • 15 cm
  • 20 cm
  • 30 cm
Q11 | Rails are fixed on steel sleepers
  • By bearing plates
  • By dog spikes
  • By keys in lugs or jaws
  • None of these
Q12 | Largest dimension of a rail is its
  • Height
  • Foot width
  • Head width
  • Any of the above
Q13 | The rail section which is not used on Indian metre gauge tracks, is
  • 25 R
  • 30 R
  • 35 R
  • 40 R
Q14 | Advantage of automatic signalling, is:
  • Increased safety
  • Reduction in delays
  • Increase in track capacity
  • All the above
Q15 | For developing thinly populated areas, the correct choice of gauge is
  • Broad Gauge
  • Meter Gauge
  • Narrow Gauge
  • Any of the above
Q16 | Coning of wheels
  • Prevent lateral movement of wheels
  • Provide smooth running of trains
  • Avoid excessive wear of inner faces of rail
  • All the above
Q17 | An extra 7.5 cm ballast width is not provided on outer side on a curve, if its degree is
Q18 | Standard size of wooden sleeper for Broad Gauge track is
  • 275 × 25 × 13 cm
  • 180 × 20 × 11.5 cm
  • 225 × 23 × 13 cm
  • 250 × 26 × 12 cm
Q19 | By interchanging gibs and cotters of a pot sleeper, gauge may be slackened by
  • 1.2 mm
  • 2.2 mm
  • 3.2 mm
  • 4.2 mm
Q20 | The main function of sleepers, is
  • To support rails
  • To hold rails at correct gauge
  • To distribute load from the rails to ballast
  • All the above
Q21 | The limiting value of cant gradient for all gauges is
  • 1 in 360
  • 1 in 720
  • 1 in 1000
  • 1 in 1200
Q22 | The spike commonly used to fix rails to wooden sleepers in Indian railways, is
  • Dog spike
  • Screw spike
  • Round spike
  • All the above
Q23 | Track construction involves preparation of
  • Sub-grade
  • Plate laying
  • Ballasting
  • All the above
Q24 | Study the following statements regarding creep.(i) Creep is greater on curves than on tangent railway track,(ii) Creep in new rails is more than that in old rails,(iii) Creep is more on steep gradients than on level track. The correct answer is
  • Only (i)
  • (i) and (ii)
  • (ii) and (iii)
  • (i), (ii) and (iii)
Q25 | According to Indian Railway Board, no diamond crossing should be flatter than
  • 1 in 6
  • 1 in 8½
  • 1 in 12
  • 1 in 16