Civil Engineering - Railways MCQs Part 1

1. Mr. W. Simms, the consulting Engineer to the Government of India recommended the gauge for Indian railways

A.
1.435 m as adopted in England

B.
1.800 m as per Indian conditions

C.
1.676 m as a compromise gauge

D.
1.000 m as a standard gauge

 Answer Option C

2. If absolute levels of rails at the consecutive axles A, B, and C separated by 1.8 metres are 100.505 m, 100.530 m, and 100.525 m respectively, the unevenness of rails, is

A.
0.065 m

B.
0.055 m

C.
0.045 m

D.
0.035 m

 Answer Option A

3. A CST-9 sleeper consists of

A.
two inverted triangular pots on either side of rail seat

B.
a central plate with a projected key and box on the top of plate

C.
a tie bar and 4 cotters to connect two cast iron plates

D.
a single two way key provided on the gauge side to hold the rail to sleeper

E.
all the above.

 Answer Option E

4. Charles Vignoles invented the flat footed rails in

A.
1814

B.
1836

C.
1846

D.
1856

E.
1873

 Answer Option B

5. To design a cross-over between parallel tracks, the required components are :

A.
two switch, points, two acute angle crossings and two check rails

B.
two switch points, two acute angle crossings and four check rails

C.
two switch points, two acute angle crossings and six check rails

D.
none of these.

 Answer Option B

6. The first Indian railway was laid in

A. 1775

B. 1804

C. 1825

D. 1853

E. 1876

 Answer Option D

7. The weight of the rails depends upon

A. gauge of the tracks

B. speed of trains

C. spacing of sleepers

D. nature of traffic

E. all the above.

 Answer Option E

8. Pick up the correct statement from the following :

A. Rails are directly laid over hard wooden sleepers and fixed with spikes

B. Adzing is done on hard wooden sleepers

C. Bearing plates are used on soft wooden sleepers

D. Chairs are used for bull headed rails

E. All the above.

 Answer Option E

9. Pick up the incorrect statement from the following:

A. Fish plates fit the underside of the rail head

B. Fish plates fit the top of the rail foot

C. Fish plates fit the web of the rail section

D. Cross sectional area of fish plates, is normally the same as that of the rail section.

 Answer Option C

10. Minimum depth of ballast prescribed of B.G. trunk lines of Indian Railways, is

A. 20 cm

B. 15 cm

C. 25 cm

D. 30 cm

E. 35 cm

 Answer Option C

11. Boxing of ballast is done

A. under rails

B. at the rails

C. in between two rails

D. in between two sleepers.

 Answer Option B

12. Best ballast contains stones varying in size from

A. 1.5 cm to 3 cm

B. 2.0 cm to 4 cm

C. 2.0 cm to 5 cm

D. 2.5 cm to 6 cm

 Answer Option C

13. For holding a rail in position, no chairs are used for

A. flat footed rails

B. bull headed rails

C. double headed rails

D. both (a) and (b)

 Answer Option A

14. Distance between the inner rail and check rail provided on sharp curve, is

A. 40 mm

B. 42 mm

C. 44 mm

D. 46 mm

E. 50 mm

 Answer Option C

15. Coal ash (or cinder) is used in initial stages of a new construction of railway for

A. wooden sleepers

B. steel sleepers

C. cast iron sleepers

D. none of these.

 Answer Option A

16. Pot sleepers are in the form of

A. a number of bowls connected together with a tie bar

B. two bowls placed under each rail and connected together with a tie bar

C. two bowls placed under two rails and the one between the rails

D. none of these.

 Answer Option B

17. In railways a triangle is mainly provided for

A. diverting trains from the main line to branch line

B. crossing over between parallel tracks

C. changing direction of engines through 180°

D. shunting wagons in yards.

 Answer Option C

18. A kink is made in stock rails, ahead of the toe of switch at a distance of

A. 10 cm

B. 15 cm

C. 20 cm

D. 30 cm

 Answer Option B

19. If L is length of a rail and R is the radius of a curve, the versine h for the curve, is

A.

B.

C.

D.

E.

 Answer Option C

20. Rails are bent to correct curvature if the degree of curve, is more than

A. 1°

B. 2°

C. 3°

D. 4°

E. 6°

 Answer Option D

21. In India the rails are manufactured by

A. open hearth process

B. duplex process

C. both (a) and (b)

D. neither (a) nor (b)

 Answer Option C

22. Rail section first designed on Indian railways, was

A. double headed

B. bull headed

C. flat footed

D. (a) and (b) simultaneously

 Answer Option A

23. A scissors cross-over consists of

A. two pairs of points, four acute angle crossings and two obtuse angle crossings

B. four pairs of points, four acute angle crossings and four obtuse angle crossings

C. four pairs of points, six acute angle crossings and two obtuse angle crossings

D. two pairs of points, six acute angle crossings and four obtuse angle crossings.

 Answer Option C

24. To prevent percolation of water into formation, moorum is used as a blanket for

A. black cotton soil

B. sandy soil

C. clayey soil

D. all the above.

 Answer Option A

25. Distance between inner faces of the flanges, is kept

A. equal to the gauge distance

B. slightly less than the gauge distance

C. slightly more than the gauge distance

D. none of these.

 Answer Option B

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

A. sal

B. chir

C. teak

D. deodar.

 Answer Option C

27. 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 α is

A.

B.

C.

D.

E.

 Answer Option A

28. 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

A. DN + G (N + 1 + N2)

B. DN + G (2N + 1 + N2)

C. DN + G (3N + 1 + N2)

D. DN + G (4N + l +N2)

 Answer Option C

29. If a 0.7% upgrade meets a 0.65% 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

A. 10 chains

B. 12 chains

C. 14 chains

D. 16 chains

 Answer Option C

30. Overall depth of a dog spike, is

A. 120.6 mm

B. 155.90 mm

C. 135 mm

D. 150 mm

E. none of these.

 Answer Option A

31. Best wood for wooden sleepers is

A. chir

B. deodar

C. sal

D. teak

E. shesham.

 Answer Option D

32. The rail section which is not used on Indian metre gauge tracks, is

A. 25 R

B. 30 R

C. 35 R

D. 40 R

 Answer Option D

33. Dimensions of a plate girder, are :

A. 851 mm x 851 mm

B. 255 mm x 254 mm

C. 851 mm x 254 mm

D. 551 mm x 254 mm

 Answer Option C

34. Rail joint supported on a single sleeper, is known

A. suspended rail joint

B. bridge rail joint

C. supported rail joint

D. square rail joint.

 Answer Option C

35. Maximum wheel base distance provided on Indian B.G. tracks, is

A. 4.096 m

B. 5.096 m

C. 6.096 m

D. 7.096 m

E. none of these.

 Answer Option C

36. The tread of wheels is provided an outward slope of

A. 1 in 10

B. 1 in 15

C. 1 in 20

D. 1 in 25

E. 1 in 30

 Answer Option C

37. 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

E. 1.0 mm

 Answer Option B

38. Bearing plates are used to fix

A. flat footed rails to the wooden sleepers

B. double headed rails to the wooden sleepers

C. bull headed rails to the wooden sleepers

D. flat footed rails to the cast iron sleepers

E. none of these.

 Answer Option A

39. A welded rail joint is generally

A. supported on a sleeper

B. supported on a metal plate

C. suspended

D. none of these.

 Answer Option C

40. Safe speed (V) on a curve of radius 970 metres provided with two transition curves on Board Gauge track, is

A. 112 km/hour

B. 122 km/hour

C. 132 km/hour

D. 142 km/hour

 Answer Option C

41. Pick up the incorrect statement from the following:

A. Sleepers hold the rails at proper gauge on straights

B. Sleepers provide stability to the permanent way

C. Sleepers act as an elastic cushion between rails and ballast

D. Sleepers transfer load of moving trains to ballast

E. None of the these.

 Answer Option E

42. If α is switch angle and R is radius of the turnout, the length of the tongue rail, is

A. R sin α

B. R tan α

C. R sin α/2

D. R tan α/2

E. R cos α/2

 Answer Option D

43. The quantity of stone ballast required per metre tangent length, is

A. 1.15 m3

B. 1.14 m3

C. 1.13 m3

D. 1.12 m3

E. 1.11 m3

 Answer Option E

44. The type of switch generally used for B.G. and M.G. tracks, is

A. articulated

B. undercut

C. over riding

D. straight cut.

 Answer Option C

45. The difference in the lengths of two diagonals of a rail diamond is

A.

B.

C.

D.

 Answer Option A

46. For flat bottom sleepers, maximum size of ballast, is

A. 50 mm

B. 40 mm

C. 33 mm

D. 25 mm

E. 20 mm

 Answer Option A

47. Coning of wheels

A. prevent lateral movement of wheels

B. provide smooth running of trains

C. avoid excessive wear of inner faces of rail

D. all the above.

 Answer Option D

48. 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.

 Answer Option D

49. Arrangement made to divert the trains from one track to another, is known as

A. railway point

B. railway crossing

C. turnout

D. railway junction

E. none of these.

 Answer Option C

50. At a rail joint, the ends of adjoining rails, are connected with a pair of fish plates and

A. 2 fish bolts

B. 4 fish bolts

C. 6 fish bolts

D. 8 fish bolts

 Answer Option B