Q.1

The main advantage of a long rail over short one, is

  • it requires less number of rail fastenings
  • it provides smooth running of trains
  • it involves less maintenance cost
  • it provides conform to passengers
  • all the above.
Q.2

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)
Q.3

Weight and cross section of the rails are decided on

  • gauge of tracks
  • speed of trains
  • spacing of sleepers
  • type of rails
  • all the above.
Q.4

Pick up the correct statement from the following:

  • An extra width of 7.5 cm ballast isprovided on outside a curve if track is laid with short welded rails
  • An extra width of 7.5 cm ballast isprovided on outside a curve sharper than 3° on B.G. and M.G. tracks
  • An extra width of 15 cm ballast is provided on each shoulder if the track is laid with welded rails
  • All the above.
Q.5

Pick up the incorrect statement from the following:

  • Ends of adjoining rails should be in true alignment
  • Rail joints should be as strong as the rail section itself
  • Rail joints should be elastic laterally as well as vertically
  • Ends of adjoining rails butt against to give a continuity
  • All the above.
Q.6

Staggered rail joints are generally provided

  • on curves
  • on tangents
  • on bridges
  • in tunnels.
Q.7

Main disadvantage of steel sleepers, is :

  • it gets rusted quickly
  • its lugs some times get broken
  • its lugs some times get split
  • all the aboye.
Q.8

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
  • none of these.
Q.9

Wooden sleepers used on the girders of bridges, are generally made of

  • sal
  • chir
  • teak
  • deodar.
Q.10

The tread of wheels is provided an outward slope of

  • 1 in 10
  • 1 in 15
  • 1 in 20
  • 1 in 25
  • 1 in 30
Q.11

Continuity of electric current across welded rail joints, is maintained by

  • welding ends of a wire to each rail
  • placing an insulated plate underneath the rails
  • placing insulation in expansion gaps
  • none of these.
Q.12

Bull headed rails are generally provided on

  • points and crossing
  • straight tangents
  • curved tracks
  • metre gauge tracks
  • none of these.
Q.13

An extra 7.5 cm ballast width is not provided on outer side on a curve, if its degree is

  • 6°
  • 5°
  • 4°
  • 3°
  • 2°
Q.14

To prevent creep in rails, the steel sleepers are fixed with rails by clips, bolts and

  • one key
  • two keys
  • three keys
  • four keys.
Q.15

On a straight railway track, absolute levels at point A on two rails are 100.m and 100.m and the absolute levels at point Bm apart are 100.m and 100.m respectively, the value of twist of rails per metre run, is

  • 0.4 mm
  • 0.5 mm
  • 0.7 mm
  • 0.8 mm
  • 1.0 mm
Q.16

Bearing plates are used to fix

  • flat footed rails to the wooden sleepers
  • double headed rails to the wooden sleepers
  • bull headed rails to the wooden sleepers
  • flat footed rails to the cast iron sleepers
  • none of these.
Q.17

Sand may be used as ballast for

  • wooden sleepers
  • steel sleepers
  • cast iron sleepers
  • all the above.
Q.18

The check rails are placed opposite the crossing so that

  • it is symmetrically placed opposite nose of crossing
  • its one-third length is ahead of the nose of crossing
  • its two-third length is ahead of the nose of crossing
  • its three fourth length is ahead of the nose of crossing.
Q.19

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
  • strength to act as a beam under loads
  • all the above.
Q.20

The standard dimensions of a wooden sleeper for a B.G. railway track are

  • 2.74 m x 25 cm x 13 cm
  • 1.83 m x 20 cm x 11 cm
  • 1.52 m x 15 cm x 10 cm
  • 1.75 cm x 20 cm x 12 cm
  • none of these.
Q.21

If D is distance between centres of two parallel track of gauge G, then, total length of cross-over (from the point of commencement to the point of termination) with an intermediate straight portion and N crossing, is given by

  • DN + G (N + 1 + N2)
  • DN + G (2N + 1 + N2)
  • DN + G (3N + 1 + N2)
  • DN + G (4N + l +N2)
Q.22

A welded rail joint is generally

  • supported on a sleeper
  • supported on a metal plate
  • suspended
  • none of these.
Q.23

Safe speed (V) on a curve of radiusmetres provided with two transition curves on Board Gauge track, is

  • 112 km/hour
  • 122 km/hour
  • 132 km/hour
  • 142 km/hour
Q.24

Cast iron sleeper, is

  • pot sleeper
  • box sleeper
  • Duplex sleeper
  • plate sleeper
  • All the above.
Q.25

Spacing of sleepers

  • throughout the length of a rail is kept uniform
  • near rail joints, is kept closer
  • at the middle of rails, is kept closer
  • none of these.
Q.26

In Indian railways, the ratio of axle load and weight of rail, is

  • 312
  • 412
  • 512
  • 600
Q.27

If a 0.upgrade meets a 0.downgrade at a summit and the permissible rate of change of grade per chain length is 0.10%, the length of the vertical curve, is

  • 10 chains
  • 12 chains
  • 14 chains
  • 16 chains
Q.28

Overall depth of a dog spike, is

  • 120.6 mm
  • 155.90 mm
  • 135 mm
  • 150 mm
  • none of these.
Q.29

Cast iron sleeper, is

  • pot sleeper
  • box sleeper
  • Duplex sleeper
  • plate sleeper
  • All the above.
Q.30

Overall depth of a dog spike, is

  • 120.6 mm
  • 155.90 mm
  • 135 mm
  • 150 mm
  • none of these.
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