Civil Engineering Competitive Exam Books pdf - Railway Engineering Set 06 - ObjectiveBooks

# Practice Test: Question Set - 06

1. Minimum gradient in station yards is generally limited to
(A) 1 in 1000
(B) 1 in 750
(C) 1 in 500
(D) Zero

2. The formation width for a single line meter gauge track in embankment as adopted on Indian Railways is
(A) 4.27 m
(B) 4.88 m
(C) 5.49 m
(D) 6.10 m

3. If L1 and L2 are actual and theoretical lengths of a tongue rail, d is heel divergence and t is thickness of tongue rail at toe, the switch angle Î± is
(A) sinË‰1 (d - t/L1)
(B) tanË‰1 (d - t/L1)
(C) sinË‰1 (d - t/L2)
(D) tanË‰1 (d - t/L2)

4. If a is average number of peaks more than 10 mm of unevenness per kilometre, b is average number peaks more than 6 mm for gauge variation per kilometre and c is average number of peaks more than 2 mm twist per metre, then composite current recording index (Ic), as recommended by Indian Northern Railways, is
(A) Ic = 10 - a - b - c/4
(B) Ic = 20 - a - b - c/4
(C) Ic = 30 - a - b - c/4
(D) Ic = 40 - a - b - c/4

5. Minimum depth of ballast cushion for a Broad Gauge wooden sleeper of size 275 × 25 × 13 cm with 75 cm sleeper spacing is
(A) 15 cm
(B) 20 cm
(C) 25 cm
(D) 30 cm

6. On a straight railway track, absolute levels at point A on two rails are 100.550 m and 100.530 m and the absolute levels at point B 100 m apart are 100.585 m and 100.515 m respectively, the value of twist of rails per metre run, is
(A) 0.4 mm
(B) 0.5 mm
(C) 0.7 mm
(D) 0.8 mm

7. If D is the distance between the parallel sidings and Î± is the angle of crossing, the distance between the noses of crossing measured parallel to the main track, is
(A) D tan Î±
(B) D sec Î±
(C) D cosec Î±
(D) D cot Î±

8. The sleepers resting directly on girder are fastened to the top flange of girder by
(A) Hook bolts
(B) Dog spikes
(C) Fang bolts
(D) Rail screws

9. The sleepers which satisfy the requirements of an ideal sleeper, are
(A) Cast iron sleepers
(B) R.C.C. sleepers
(C) Steel sleepers
(D) Wooden sleepers

10. The side of a rail diamond may be obtained by dividing the gauge of track by
(A) Sine of acute crossing
(B) Cosine of acute crossing
(C) Tangent of acute crossing
(D) Cotangent of acute crossing

11. The standard length of rail for Broad Gauge and Meter Gauge are respectively
(A) 12 m and 12 m
(B) 12 m and 13 m
(C) 13 m and 12 m
(D) 13 m and 13 m

12. Coning of wheels is provided
(A) To check lateral movement of wheels
(B) To avoid damage to inner faces of rails
(C) To avoid discomfort to passengers
(D) All the above

13. On Indian Railways, angle of crossing between gauge faces of Vee, is generally calculated by
(A) Cole's method
(B) Centre line method
(C) Isosceles triangle method
(D) Both (a) and (b)

14. 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
(A) Only (i)
(B) Both (i) and (ii)
(C) Both (ii) and (iii)
(D) (i), (ii) and (iii)

15. Ballast packed below and around the sleepers to transfer the load from sleepers to formation, generally consists of
(A) Broken stones
(B) Gravels
(C) Moorum
(D) All the above

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