Railway Engineering

171. Sand may be used as ballast for

1. Wooden sleepers
2. Steel sleepers
3. Cast iron sleepers
4. All the above

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172. Sleeper density in India is normally kept as

1. (M + 2) to (M + 7)
2. M to (M + 2)
3. (M + 5) to (M + 10)
4. M
   Where 'M' is the rails lenght in meters

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173. Smith diamond is provided if the angle of diamond is less than

1. 2°
2. 4°
3. 6°
4. 8°

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174. Spacing of sleepers

1. Throughout the length of a rail is kept uniform
2. Near rail joints, is kept closer
3. At the middle of rails, is kept closer
4. None of these

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175. Staggered joints are generally provided

1. On curves
2. On straight track
3. When two different rail sections are required to be joined
4. None of the above

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176. Staggered rail joints are generally provided

1. On curves
2. On tangents
3. On bridges
4. In tunnels

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177. Standard size of wooden sleeper for Broad Gauge track is

1. 275 × 25 × 13 cm
2. 180 × 20 × 11.5 cm
3. 225 × 23 × 13 cm
4. 250 × 26 × 12 cm

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178. Steel sleepers are

1. Rectangular is cross section throughout
2. Hollow circular pipes
3. 6 mm thick steel sheets with ends bent down
4. 6 mm thick steel sheets with ends bent up

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179. Stock rails are

1. Parts of crossing
2. Fitted against check rails
3. Fitted against tongue rails
4. Laid between heel of switch and nose of crossing

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180. Stretcher bar is provided

1. To permit lateral movement of the tongue rail
2. To maintain the two tongue rails at the exact distance
3. To ensure exact gauge at the toe of the switch as well as the nose of crossing
4. To prevent any vertical movement between the wing rail and nose of crossing

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