# Civil Highway Engineering Practice Test – Set 19

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(A) 10 cm
(B) 20 cm
(C) 30 cm
(D) 40 cm

## Q2. An exceptional grade may be provided upto 1 in 12 along hill roads, if the length does not exceed

(A) 45 m per km
(B) 60 m per km
(C) 75 m per km
(D) 90 m per km

Answer: (B) 60 m per km

## Q3. Parapet walls along hill roads, are provided

(A) To retain the back filling
(B) To prevent the hill from sliding
(C) To prevent the wheels of the vehicle from coming on the retaining wall
(D) None of these

Answer: (C) To prevent the wheels of the vehicle from coming on the retaining wall

## Q4. If no super elevation is provided on a road along curves, pot holes may develop at

(A) Inner edge of the road
(B) Outer edge of the road

## Q5. Shoulders for high traffic volume roads, should

(A) Be stable throughout the year to be used by vehicles in the case of emergency
(B) Support and protect the ends of carriage ways
(C) Not allow entrance of water to sub-grade
(D) All the above

## Q6. An ideal vertical curve is

(A) True spiral
(B) Cubic spiral
(C) Cubic parabola
(D) None of these

## Q7. The safe stopping sight distance D, may be computed from the equation

(A) D = 0.278 Vt + V2/254f
(B) D = 0.254 Vt + V2/278f
(C) D = 0.254 Vt + V2/225f
(D) D = 0.225 Vt + V2/254f

Answer: (A) D = 0.278 Vt + V2/254f

(A) 4 %
(B) 3 %
(C) 2 %
(D) 1.7 %

(A) 1/10
(B) 1/20
(C) 1/30
(D) 1/100

(A) 3.6 m
(B) 4.8 m
(C) 6.6 m
(D) 7.2 m

## Q11. If d is the thickness of a concrete pavement, the equivalent radius b of resisting section for an interior loading, is

(A) b = √(0.6 + d2) – 0.675 d
(B) b = √(1.6 + d2) + 0.675 d
(C) b = √(1.6 + d2) – 3.675 d
(D) b = √(1.6 + d2) – 0.675 d

Answer: (D) b = √(1.6 + d2) – 0.675 d

(A) 2.00 %
(B) 2.25 %
(C) 2.50 %
(D) 2.75 %

## Q13. Before providing super-elevation on roads, the portion of the carriageway between the crown and the outer edge is made

(A) To have a reduced fall
(B) Horizontal
(C) To have slope of the camber on the other half of the carriageway
(D) None of these

Answer: (C) To have slope of the camber on the other half of the carriageway

## Q14. Roughness index of roads, is expressed as

(A) Size of the stone on the pavement
(B) Number of patches on the pavement
(C) Cumulative deformation of surface per horizontal distance
(D) Type of the road surface

Answer: (C) Cumulative deformation of surface per horizontal distance

## Q15. If P is the number of vehicles per day at last census, r is the increase in traffic and n is the number of years passed after last census, number of vehicles A per day for design, is

(A) P (1 + r)n
(B) P (1 – r)n
(C) P (1 + r)-n+5
(D) P (1 + r)5n

Answer: (C) P (1 + r)-n+5

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