51. Enoscope is used to find______________?
A. average speed
B. spot speed
C. space-mean speed
D. time-mean speed
✅ The correct answer is option B.
Highway Engineering MCQs
52. Which of the following represents hardest grade of bitumen ?
A. 30/40
B. 60/70
C. 80/100
D. 100/120
✅ The correct answer is option A.
53. The maximum thickness of expansion joint in rigid pavements is______________?
A. 0
B. 25 mm
C. 50 mm
D. 100 mm
✅ The correct answer is option B.
54. When the bituminous surfacing is done on already existing black top road or over existing cement concrete road, the type of treatment to be given is________________?
A. seal coat
B. tack coat
C. prime coat
D. spray of emulsion
✅ The correct answer is option B.
55. The transition curve used in the horizontal alignment of highways as per IRC recommendations is_______________?
A. spiral
B. lemniscate
C. cubic parabola
D. any of the above
✅ The correct answer is option A.
56. The terrain may be classified as rolling terrain if the cross slope of land is______________?
A. upto 10%
B. between 10% and 25%
C. between 25% and 60%
D. more than 60%
✅ The correct answer is option B.
57. Scientific planning of transportation system and mass transit facilities in cities should be based on_____________?
A. spot speed data
B. origin and destination data
C. traffic volume data
D. accident data
✅ The correct answer is option B.
58. As per IRC recommendations, the maximum limit of super elevation for mixed traffic in plain terrain is_______________?
A. 1 in 15
B. 1 in 12.5
C. 1 in 10
D. equal to camber
✅ The correct answer is option A.
59. If b is the wheel track of a vehicle and h is the height of centre of gravity above road surface, then to avoid overturning and lateral skidding on a horizontal curve, the centrifugal ratio should always be________________?
A. less than b/2h and greater than co-efficient of lateral friction
B. less than b/2h and also less than co-efficient of lateral friction
C. greater than b/2h and less than co-efficient of lateral friction
D. greater than b/2h and also greater than coefficient of lateral friction
✅ The correct answer is option B.
60. Compared to a level surface, on a descending gradient the stopping sight distance is_______________?
A. less
B. more
C. same
D. dependent on the speed
✅ The correct answer is option B.