Geometric Design of Highway 5

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1. Horizontal curve on a road provides

A) Change in direction
B) Change in gradient
C) Both
D) None of these

... Answer is A


 

2. Curve whose radius gradually changes from an infinite value to a finite value or vice versa for the purpose of giving easy change of direction of road is called _______

A) Compound curve
B) Simple curve
C) Transition curve
D) Circular curve

... Answer is C

 

3. Ideal shape of transition curve is

A) Spiral
B) Cubic spiral
C) Clothoid
D) Both A and C

... Answer is D

 

4. Cubic Parabola is set out by ___________

A) Oblong method
B) Trammel method
C) Concentric circle
D) Rectangle Coordinate

... Answer is D

 

5. Which of the following is not a Transition curve

A) Spiral curve
B) Compound curve
C) Leminiscate curve
D) Cubic parabola curve

... Answer is B
A transition curve can never be a Compound curve
 

6. When deflection angle is large_________ curve is preffered.

A) Parabola
B) Cubic parabola
C) Leminiscate
D) Clothoid

... Answer is C
It is set out by polar deflection angle
 

7. Length of transition curve is directly proportional to__________

A) 1/R
B) C
C) V2
D) All the above

... Answer is A
Length of transition curve = V³/CR --V in m/s
 

8. When transition curve is introduced, the resulting curve is shifted inward by a certain distance is _________

A) S=Ls²/24R
B) S=Ls2/48R
C) S=Ls2/CR
D) S=Ls2/R

... Answer is A

 

9. Point where alignment changes from curve to straight

A) Point of curve
B) Point of tangency
C) Point of intersection
D) Reverse curve

... Answer is B

 

10. Centrifugal ratio or impact factor is

A) P/W=V²/gR
B) P/R=Wg
C) P/W=V²/2gR
D) P/W=V²/2gR

... Answer is A
W=weight of vehicle, V=velocity, R=radius of curve, P=Centrifugal force
 

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