Civil Engineering - Railways MCQs Part 3

1. For even distribution of load through ballast, load dispersal is assumed as

A.
30° to the vertical

B.
45° to the vertical

C.
60° to the vertical

D.
none of these.

 Answer Option B

2. The side of a rail diamond may be obtained by dividing the gauge of track by

A.
sine of acute crossing

B.
consine of acute crossing

C.
tangent of acute crossing

D.
cotangent of acute crossing.

 Answer Option A

3. The main advantage of a cement concrete sleeper, is :

A.
its heavy weight which improves the track modulus

B.
its capacity to maintain gauge

C.
its suitability for track circuiting

D.
its flat bottom which is very suitable for modern track

E.
all the above.

 Answer Option E

4. Rail tops of a track are placed

A.
horizontal

B.
at an inward slope of 1 in 20

C.
at an outward slope of 1 in 20

D.
at an outward slope of 1 in 30

E.
at an inward slope of 1 in 30

 Answer Option B

5. The gradient on which an additonal engine is required to negotiate the gradient, is called

A.
momentum gradient

B.
pusher gradient

C.
ruling gradient

D.
steep gradient.

 Answer Option B

6. Pick up the correct statement from the following:

A. The line which connects a number of parallel tracks, and also provides an access to main track, is called a gathering line

B. With a diagonal gathering line, the length of the siding decreases with increase of its distance from main track

C. To have sidings of same length, a diagonal line is laid at one end and a parallel gathering line at the other end

D. For most economical layout of yards, the gathering lines are laid at the limiting angle

E. All the above.

 Answer Option E

7. If D is the distance between the parallel sidings and β is the limiting angle of crossings, the distance between the noses of crossing measured parallel to the main track, is

A. D sin β

B. D cot β

C. D tan β

D. D sec β

 Answer Option B

8. To avoid the damage of nose of crossing, the wing rails are ramped so that nose of crossing remains at a lower level by

A. 3 mm

B. 4 mm

C. 5 mm

D. 6 mm.

 Answer Option A

9. Smitch diamond is provided if the angle of diamond is less than

A. 2°

B. 4°

C. 6°

D. 8°

 Answer Option C

10. The distance between theoretical nose of crossing and actual nose of crossing for practical purposes, is

A. Nose thickness x tan α

B. Nose thickness x cot α

C. Nose thickness x sin α

D. Nose thickness x cos α

 Answer Option B

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

A. it requires less number of rail fastenings

B. it provides smooth running of trains

C. it involves less maintenance cost

D. it provides conform to passengers

E. all the above.

 Answer Option E

12. Widening of gauge is provided if degree of the curve, is

A. 3° or less

B. 3° to

C. more than

D. none of these.

 Answer Option C

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

A. welding ends of a wire to each rail

B. placing an insulated plate underneath the rails

C. placing insulation in expansion gaps

D. none of these.

 Answer Option D

14. Sand may be used as ballast for

A. wooden sleepers

B. steel sleepers

C. cast iron sleepers

D. all the above.

 Answer Option C

15. Cast iron sleeper, is

A. pot sleeper

B. box sleeper

C. Duplex sleeper

D. plate sleeper

E. All the above.

 Answer Option E

16. 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)

 Answer Option A

17. For an effective administration, Indian railway system has been divided into

A. four railway zones

B. six railway zones

C. seven railway zones

D. eight railway zones

E. nine railway zones.

 Answer Option E

18. In a railway track, permissible gauge with tolerance under loaded condition, is

A. G + 0.1 mm

B. G + 1.5 mm

C. G - l.O mm

D. G - 1.5mm

E. G - 20 mm

 Answer Option B

19. A turn-in-curve is defined as

A. a curve introduced between two straights

B. a reverse curve

C. a reverse curve introduced in continuity of a turn out

D. a spiral transition curve.

 Answer Option C

20. Advantage of automatic signalling, is:

A. increased safety

B. reduction in delays

C. increase in track capacity

D. all the above.

 Answer Option D

21. Track construction involves preparation of

A. subgrade

B. plate laying

C. ballasting

D. all the above.

 Answer Option D

22. In permanent way, ballast

A. transfers load from sleepers to the formation

B. provides an elastic bed to the track

C. provides a drainage of track

D. all the above.

 Answer Option D

23. The lengths of the standard crossings in India for Broad gauge and Metre gauge tracks is same for

A. 1 in B.G. and, in 12 M.G.

B. 1 in 12 B.G. and, 1 in 16 M.G.

C. 1 in 12 B.G. and 1 in M.G.

D. 1 in 16 B.G. and 1 in 12 M.G.

 Answer Option A

24. If w is width of sleepers, s is sleeper spacing and d is depth of ballast then

A.

B.

C.

D.

E.

 Answer Option A

25. On either side of the centre line of rails, a cant of 1 in 20 in the sleeper is provided for a distance of

A. 150 mm

B. 165 mm

C. 175 mm

D. 185 mm

 Answer Option C

26. Anti-creep anchors are fixed to rails by

A. wedging

B. spring grip

C. clamping

D. all the above.

 Answer Option D

27. On Indian Railways, the approximate weight of a rail section is determined from the formula

A.

B.

C.

D.

 Answer Option C

28. Pick up the incorrect statement from the following. Required tilt of 1 in 20 is provided

A. to the tops of rails

B. at rail seats in bearing plates

C. at rail seats in chairs

D. at rail seats in metal sleepers.

 Answer Option A

29. A triangle of railway consists of

A. three turn outs

B. one turn out and two diamonds

C. two turn outs and one split

D. one turn out, one split and one diamond.

 Answer Option C

30. Steel sleepers are

A. rectangular is cross section throughout

B. hollow circular pipes

C. 6 mm thick steel sheets with ends bent down

D. 6 mm thick steel sheets with ends bent up.

 Answer Option C

31. 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

A. D (4R - 2G - D)

B. D (3R - 2G -D)

C. D (3R + 2G - D)

D. D (4 + 2G - D)

 Answer Option A

32. Pick up the incorrect statement from the following:

A. Ends of adjoining rails should be in true alignment

B. Rail joints should be as strong as the rail section itself

C. Rail joints should be elastic laterally as well as vertically

D. Ends of adjoining rails butt against to give a continuity

E. All the above.

 Answer Option E

33. Staggered rail joints are generally provided

A. on curves

B. on tangents

C. on bridges

D. in tunnels.

 Answer Option A

34. Bull headed rails are generally provided on

A. points and crossing

B. straight tangents

C. curved tracks

D. metre gauge tracks

E. none of these.

 Answer Option A

35. The check rails are placed opposite the crossing so that

A. it is symmetrically placed opposite nose of crossing

B. its one-third length is ahead of the nose of crossing

C. its two-third length is ahead of the nose of crossing

D. its three fourth length is ahead of the nose of crossing.

 Answer Option C

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

A. gauge of tracks

B. speed of trains

C. spacing of sleepers

D. type of rails

E. all the above.

 Answer Option E

37. Main disadvantage of steel sleepers, is :

A. it gets rusted quickly

B. its lugs some times get broken

C. its lugs some times get split

D. all the aboye.

 Answer Option D

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

A. 6°

B. 5°

C. 4°

D. 3°

E. 2°

 Answer Option D

39. The factor for deciding the type of sleeper, is

A. easy fixing and removal of rails

B. provision of sufficient bearing area for rails

C. initial and maintenance costs

D. strength to act as a beam under loads

E. all the above.

 Answer Option E

40. Spacing of sleepers

A. throughout the length of a rail is kept uniform

B. near rail joints, is kept closer

C. at the middle of rails, is kept closer

D. none of these.

 Answer Option C

41. Rail section is generally designated by its

A. total weight

B. total length

C. weight per metre length

D. area of its cross-section.

 Answer Option C

42. Pick up the correct statement from the following:

A. Length of tongue rail should be greater than rigid wheel base of vehicle

B. Stock rail should be longer than tongue rail

C. Length of stock rail ahead of the toe should be a minimum of 1.65 m

D. All the above.

 Answer Option D

43. Total effective bearing area of both the bowls of a pot sleeper, is

A. slightly more than that of a wooden sleeper

B. slightly less than that of a wooden sleeper

C. equal to that of a wooden sleeper

D. none of these.

 Answer Option C

44. For metal sleepers with rounded edges, maximum size of ballast, is

A. 50 mm

B. 40 mm

C. 30 mm

D. 25 cm

E. 20 mm

 Answer Option B

45. If G is gauge distance and a is crossing, the distance between the nose of acute crossing and nose of obtuse crossing of a rail diamond, measured along the rail not forming the diamond, is

A. G cot α

B. G tan α

C. G sin α

D. G cos α

 Answer Option A

46. On Indian Railways, number of a crossing is defined as

A. sine of angle of crossing

B. consine of angle of crossing

C. tangent of angle of crossing

D. contangent of angle of crossing.

 Answer Option D

47. If the standard length of a crossing is 480 cm, the number of crossing is

A. 1 in of B.G.

B. 1 in of M.G.

C. both (a) and (b)

D. none of these.

 Answer Option C

48. In India, metre gauge permanent way was adopted in

A. 1855

B. 1860

C. 1866

D. 1871

E. 1875

 Answer Option D

49. On a single line track, 10 goods trains loaded with iron ore run from A to B and empty wagons return from B to A daily. Amount of creep of the rails will be

A. zero

B. more in the direction A to B

C. more in the direction B to A

D. none of these.

 Answer Option B

50. Check rails are provided on inner side of inner rails if sharpness of a B.G. curve, is more than

A. 3°

B. 5°

C. 6°

D. 8°

 Answer Option D