Highway Engineering objective questions and answers Set – 24

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Q1. 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) (100 At × t)/WL
(B) 100 At/tWL
(C) (100 WAt × t)/tL
(D) 100 WL/Att

Answer: (D) 100 WL/Att

Q2. If N is deviation angle the length L of a parabolic vertical curve for overtaking sight distance S, is

(A) NS2/9.6 if L > S
(B) NS2/9.6 if L < S
(C) 2S – 9.6/N if L < S
(D) Both (A) and (C)

Answer: (D) Both (A) and (C)

(A) 10 cm
(B) 12 cm
(C) 15 cm
(D) 18 cm

(A) Parabolic
(B) Elliptical
(C) Circular
(D) Spiral

(A) 5 %
(B) 7 %
(C) 8 %
(D) 10 %

Answer: (D) 10 %

Q6. If V is the velocity in kmph, t the brake reaction time in seconds and η the efficiency of the brakes, the stopping distance S of the vehicle, is

(A) 0.28V2t + V/0.01 η
(B) 0.28Vt + V2/0.1 η
(C) 0.28Vt + 0.01 V2η
(D) 0.28Vt + 0.01 V2/η

Answer: (C) 0.28Vt + 0.01 V2η

Q7. 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) None of these

Answer: (D) None of these

Q8. If R is the radius of a main curve and L is the length of the transition curve, the shift of the curve, is

(A) L/24 R
(B) L2/24 R
(C) L3/24 R
(D) L4/24 R

Answer: (B) L2/24 R

Q9. 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

Answer: (C) 8050 vehicles

(A) Sully
(B) Tresguet
(C) Telford

Q11. The length of the side of warning sign boards of roads is

(A) 30 cm
(B) 40 cm
(C) 45 cm
(D) 50 cm

Answer: (C) 45 cm

Q12. Pick up the correct statement from the following:

(A) Detailed survey is carried out for a strip of land about 30 m at sharp curves
(B) Levels are taken along the trace cut at an interval of 20 m
(C) Contour interval is generally adopted at 2 meters vertical interval
(D) All the above

Answer: (D) All the aboveOption D

Q13. The desirable camber for straight roads with water bound macadam or gravel surface, is

(A) 1 in 33 to 1 in 25
(B) 1 in 40 to 1 in 33
(C) 1 in 150 to 1 in 140
(D) 1 in 160 to 1 in 140

Answer: (B) 1 in 40 to 1 in 33

Q14. Minimum permissible speed on high speed roads, is decided on the basis of

(A) 15 percentile cumulative frequency
(B) 20 percentile cumulative frequency
(C) 30 percentile cumulative frequency
(D) 40 percentile cumulative frequency

Answer: (A) 15 percentile cumulative frequency

Q15. The maximum radial distance of a Lemniscate curve, having maximum polar angle a, is

(A) 3 R sin α
(B) 3 R sin2α
(C) 3 R sin 2α
(D) 3 R sin α/2

Answer: (C) 3 R sin 2α

Highway Engineering MCQs all set-

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