Practice Test: Question Set - 22
1. The perpendicular offset from the tan-get to the central point of the circular curve, is
- (A) R sin θ/2
- (B) R cos θ/2
- (C) R (1 - cos θ/2)
- (D) R (1 - sin θ/2)
2. The width of pavement in addition to a gravelled berm 1 m on either side for a two directional traffic recommended by Nagpur (India) Conference of Chief Engineers, is
- (A) 4.7 m
- (B) 5.7 m
- (C) 6.7 m
- (D) 7.7 m
3. Minimum stopping distance for moving vehicles on road with a design speed of 80 km/hour, is
- (A) 80 m
- (B) 100 m
- (C) 120 m
- (D) 150 m
4. The top height of a route marker above crown level is
- (A) 1.50 m
- (B) 1.75 m
- (C) 2.00 m
- (D) 2.25 m
5. Along horizontal curves, if centrifugal force exceeds lateral friction, vehicles may
- (A) Skid
- (B) Slip
- (C) Not
be affected
- (D) None
of these
6. Pick up the incorrect statement from the following. The super-elevation on roads is
- (A) Directly
proportional to width of pavement
- (B) Directly
proportional to velocity of vehicles
- (C) Inversely
proportional to acceleration due to gravity
- (D) Inversely
proportional to the radius of curvature
7. For clear distinct vision, images of obstructions should fall on the retina with a cone of
- (A) 2°
- (B) 3°
- (C) 4°
- (D) 5°
8. The basic formula for determination of pavement thickness was first suggested by
- (A) Spangler
- (B) Picket
- (C) Kelly
- (D) Goldbeck
9. If ‘L’ meters is the distance between extreme axles of a vehicle, its gross load should not exceed
- (A) 1525 (L +
4.3) - 14.7 L2
- (B) 1526 (L +
5.3) - 14.7 L2
- (C) 1525 (L +
6.3) - 14.7 L2
- (D) 1525 (L +
7.3) - 14.7 L2
10. If x% is the gradient of an alignment and y% is the gradient after proper super-elevation along a curved portion of a highway, the differential grade along the curve, is
- (A) (x + y)
%
- (B) (x - y)
%
- (C) (y - x)
%
- (D) (y + x)
%
11. 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
12. The shape of a vertical curve, is
- (A) Parabolic
- (B) Elliptical
- (C) Circular
- (D) Spiral
13. 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
14. The inventor of road making as a building science, was
- (A) Sully
- (B) Tresguet
- (C) Telford
- (D) Macadam
15. 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
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