### Civil Engineering - Highway Engineering MCQs Part 5

1. If a Lemniscate curve of transition throughout is introduced to connect two parallel roads, the maximum polar angle of the curve, is

A.
10°
B.
15°
C.
20°
D.
30°
E.
45°

2. If the cross slope of a country is 25% to 60%, the terrain is classified as

A.
plain
B.
rolling
C.
steep
D.
mountainous.

3. Setting out of Lemniscate transition curves, is done with

A.
perpendicular offsets
B.
C.
deflection angles
D.
polar deflection angles.

4. Reference pillars fixed on the centre line of a proposed road, provide the following information:

A.
reduced distance (R.D.)
B.
horizontal distance of road from the centre line
C.
reduced level at the top of pillar
D.
E.
all the above.

5. The normal road land width for a major district road in open area, is

A.
45 m
B.
25 m
C.
15 m
D.
12 m

6. On earth roads, the camber should preferably be

A. 1 in 20 to 1 in 24
B. 1 in 30 to 1 in 48
C. 1 in 15 to 1 in 20
D. 1 in 10 to 1 in 15
E. 1 in 10 to 1 in 12

7. The convexity provided to the carriageway between the crown and edge of the pavement, is known as

A. super-elevation
B. camber
C. height of the pavement
D. None of these.

8. Alignment of highways in hilly regions, is decided on

A. long stretch of very hard cutting
B. number of river crossings
C. natural unstable areas
E. all the above.

9. The standard equation of a cubical spiral transition curve provided on roads, is

A.
B.
C.
D.
E. none of these.

10. If At is the area of steel cross-section, t is working stress, L is width of road and W is weight of slab per square metre, the spacing of the tie bars for a longitudinal joint, is

A.
B.
C.
D.

B. 10 tO 20 per cent easier than ruling gradients
C. 10 to 20 per cent steeper than ruling gradients
D. none of these.

12. The width of the right of way in urban area, is kept between 24 m to 60 m for

A. National Highways
B. State Highways
C. Both (a) and (b)
D. None of these.

13. The safe length L of a valley curve for night travel is

A.
B.
C. neither (a) nor (b)
D. both (a) and (b)

14. If the rate of change of the super-elevation along a curved portion of a 7 metre wide road is 1 in 150 and the maximum super-elevation allowed is 1 in 15, the maximum length of the transition curve to be provided at either end, is

A. 65 m
B. 70 m
C. 75 m
D. 80 m
E. 90 m

15. The full width of land acquired before finalising a highway, alignment is known

A. width of formation
B. right of way
C. carriage way

16. Retaining walls are generally constructed with dry rubble stones with 60 cm top width and

A. 1 : 2 front batter
B. 1 : 3 front batter
C. 1 : 4 front batter
D. 1 : 5 front batter

17. The ability of a driver to stop the vehicle moving with the designed speed, depends upon:

A. perception time
B. brake reaction time
C. efficiency of the brakes
D. frictional resistance between road surface and vehicle
E. all the above.

18. To prevent compressive stresses in a rigid concrete pavement, the joint prvoided, is

A. expansion joint
B. contraction joint
C. hinged joint
D. all the above.

19. In case of cement concrete pavements, pick up the incorrect statement

A. tractive resistance is low
B. initial cost of construction is high
C. initial cost of construction is low
D. visibility during nights is high
E. none of these.

20. The radius of curvature provided along a transition curve, is

A. minimum at the beginning
B. same throughout its length
C. equal to the radius of circular curve
D. varying from infinity to the radius of circular curve.

21. If V is the velocity in km.p.h., t the brake reaction time in seconds and η the efficiency of the brakes, the stopping distance S of the vehicle, is

A.
B.
C.
D.

22. During last phase of the reconnaissance, details of the grade line is recorded on 2 metre poles to indicate

A. direction of the proposed alignment
B. distance between the previous and forward pegs
C. relative elevations of pegs
D. all the above.

23. Concrete pavement is provided if daily traffic per lane exceeds

A. 500 tonnes
B. 750 tonnes
C. 1000 tonnes
D. 1250 tonnes
E. 1300 tonnes

24. If d is the economic designed depth of a slab, the thickness of the cement concrete pavement slab at interior, is kept

A. 1.275 d
B. 1.125 d
C. 0.85 d
D. 0.75 d
E. 0.60 d

25. If the elevations along a road increase, the slope of the road along the longitudinal direction, is known as

26. Pick up the incorrect statement from the following:

A. Highways are always constructed in straight line
B. Highways may be provided horizontal curves
C. Highways may be provided vertical curves
D. Highways may be provided both horizontal and vertical curves.

27. If the width of carriage way is 12.5 metres, outer edge 50 cm higher than the inner edge, the required super elevation is

A. 50 cm
B. 1 in 25
C. 1 in 400
D. 1 in 40
E. 1 in 24

28. In cement concrete pavements, tensile stress is due to :

A. bending or deflection under wheel loads
B. difference in temperature of the top and bottom of pavement
C. contraction of slab during falling temperature
D. all the above.

29. If L is the length of the transition curves provided on either side of a circular curve of radius R, the maximum angle of deflection with tangent for the junctions of the transition curve and circular curve, is

A. L/R
B. L/2R
C. L/3R
D. L/4R
E. none of these.

30. Interior thickness of concrete road slab for design wheel load 6300 kg and permissible flexural stress 21 kg/cm2, is

A. 17.0 cm
B. 25.5 cm
C. 34.0 cm
D. 42.5 cm
E. 50.0 cm

31. If R is the radius of a main circular curve, Δ is the angle of deflection and α is the polar deflection angle of any point, its radial distance is

A. 3 R sin Δ/3 sin 2α
B. 3 R sin Δ/2 sin 3α
C. 3 R sin Δ/3 sin α/2
D. 3 R sin 2Δ sin α

32. Super-elevation on roads in snow bound areas, should generally not exceed

A. 15%
B. 12%
C. 10%
D. 7%
E. 6%

33. If the width of a pavement slab is 7.5 m, thickness 20 cm and working stress 1400 kg/cm2, spacing of 10 mm tie bars for the longitudinal joint, is

A. 10 cm
B. 20 cm
C. 30 cm
D. 40 cm
E. 50 cm

34. Minimum number of 50 kg cement bags per cubic metre of concrete for a mix corresponding to crushing strength 280 kg/cm2 at 28 days, are

A. 5.0
B. 6.5
C. 7.0
D. 7.5
E. 8.0

35. Three points, A, B and C 500 m apart on a straight road have 500 m, 505 m and 510 m as their reduced levels. The road is said to have

A. no gradient between A and C
B. a positive gradient between A and C
C. a negative gradient between A and C
D. a negative gradient between A and B
E. a positive gradient between A and B followed by a negative gradient between B to C.

36. In a braking test, a vehicle travelling at 36 km ph was stopped at a braking distance of 8.0 m. The average value of the vehicle's skid resistance (friction coefficient) is

A. 0.64
B. 6.25
C. 0.16
D. none of these

37. If present A.D.T. is 5000 vehicles and annual increase is 10%, the average future flow after 5 years will be

A. 6050 vehicles
B. 7050 vehicles
C. 8050 vehicles
D. 9050 vehicles

38. To prevent a head-on-collision of vehicles travelling in opposite directions along four-lane roads

A. markings on the road are provided
B. physical dividers are provided
C. area dividers are provided
D. medians of wide area are provided
E. none of these.

39. Pick up the correct statement from the following:

A. Detailed survey is carried out for a strip of land about 15 m on either side of the trace cut along straight portions
B. Detailed survey is carried out for a strip of land about 30 m at sharp curves
C. Levels are taken along the trace cut at an interval of 20 m
D. Contour interval is generally adopted at 2 metres vertical interval
E. All the above.

40. The G.T. road from Lahore to Calcutta in undivided India, was constructed during

A. 3495-3500 BC
B. 265-270 BC
D. 1440-1450

41. Indian Road Congress (I.R.C.) was founded and constituted with its head quarters at New Delhi, in

A. 1924
B. 1927
C. 1930
D. 1934
E. 1942

42. Extra widening required at a horizontal curve on a single lane hill road of radius 80 m for a design speed of 50 km ph and for a vehicle with wheel base 6.0 m is

A. 0.225 m
B. 0.589 m
C. 1.250 m
D. none of these

43. The normal road land width for a National or State highway, in open areas should be

A. 45 m
B. 30 m
C. 24 m
D. 20 m

44. Excessive camber on pavements may cause

A. deterioration of central portion
B. slip of the speedy vehicles towards the edges
C. erosion of the berms
D. all the above.

45. The type of curves generally provided on highways, is

A. critical curve
B. transition curve
C. vertical curve
D. all the above.

46. The safe stopping sight distance D, may be computed from the equation

A.
B.
C.
D.

47. Non-passing sight distance along a road is the longest distance at which the driver of a moving vehicle, may see an obstacle on the pavement

A. 10 cm high
B. 25 cm high
C. 50 cm high
D. 100 cm high
E. 150 cm high

48. The minimum road width is taken

A. 9 m
B. 12 m
C. 16 m
D. 20 m

49. If cross slope of a country is upto 10% the terain is classified as

A. plain
B. rolling
C. mountainous
D. steep.

50. When each particle of aggregates is thinly coated with cement paste, a heterogeneous solid is formed, which is known as

A. hydration
B. gel
C. concrete
D. none of these.