# 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

## 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 %

## 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

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

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

(A) 30 cm
(B) 40 cm
(C) 45 cm
(D) 50 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 MCQ – All Set

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