Railway Engineering

261. Vertical curves are provided where algebraic difference between grades is equal to or

1. Less than 2 mm/m
2. More than 2 mm/m
3. Less than 4 mm/m
4. More than 4mm/m

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262. Wear of rails is maximum in weight of

1. Tangent track
2. Sharp curve
3. Tunnels
4. Coastal area

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263. Weight and cross section of the rails are decided on

1. Gauge of tracks
2. Speed of trains
3. Spacing of sleepers
4. All the above

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264. What will be the curve lead for a 1 in 8.5 turnout taking off from a straight broad gauge track?

1. 28.49 m
2. 21.04 m
3. 14.24 m
4. 7.45 m

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265. Wheels of a rolling stock are provided flanges on

1. Outer side
2. Inner side
3. Both sides
4. Neither side

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266. When semaphore and warner are installed on the same post, then the stop indication is given when

1. Both arms are horizontal
2. Semaphore arm lowered but warner arm horizontal
3. Both semaphore and warner arms lowered
4. None of the above

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267. When the rail ends rest on a joint sleeper, the joint is termed as

1. Supported rail joint
2. Suspended rail joint
3. Bridge joint
4. Base joint

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268. Which of the following devices is used to transfer the wagons or locomotives to and from parallel tracks without any necessity of shunting?

1. Triangle
2. Turntable
3. Traverser
4. Scotch block

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269. Which of the following factors govern the choice of the gauge?
(i) Volume and nature of traffic
(ii) Speed of train
(iii) Physical features of the country
The correct answer is

1. Only (i)
2. Both (i) and (ii)
3. Both (ii) and (iii)
4. (i), (ii) and (iii)

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270. 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?

1. Detectors
2. Point lock
3. Iock bar
4. Stretcher bar

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