### Railway Bridge And Tunnel Engineering Set 8

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
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
• 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
• 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