# Practice Test: Question Set - 09

**1. If the radii of a compound curve and a reverse curve are respectively the same, the length of common tangent**

- (A) Of compound
curve will be more

- (B) Of reverse
curve will be more

- (C) Of both
curves will be equal

- (D) None of
these

**2. The best compromise between the increase of the length of a highway and reduction in its load carrying capacity, is the ruling gradient**

- (A) 1 in 10

- (B) 1 in 15

- (C) 1 in 20

- (D) 1 in 25

**3. Bottom most layer of pavement is known as**

- (A) Wearing
course

- (B) Base course

- (C) Sub-base
course

- (D) Sub-grade

**4. The number of vehicles moving in a specified direction on a roadway that pass a given point during specified unit of time, is called**

- (A) Traffic
volume

- (B) Traffic
density

- (C) Basic
capacity

- (D) Traffic
capacity

**5. Ruling gradient on hill roads 300 m above M.S.L. is kept**

- (A) 4 %

- (B) 5 %

- (C) 7 %

- (D) 8 %

**6. The aggregates required for one kilometer length of water bound macadam road per meter width and for 10 mm thickness is**

- (A) 8 cubic
meter

- (B) 10 cubic
meter

- (C) 12 cubic
meter

- (D) 15 cubic
meter

**7. The minimum value of camber provided for thin bituminous surface hill roads, is**

- (A) 2.2 %

- (B) 2.5 %

- (C) 3.0 %

- (D) 3.5 %

**8. Roundabouts are not suitable if number of vehicles exceed**

- (A) 3000

- (B) 4000

- (C) 5000

- (D) 6000

**9. The minimum design speed for hairpin bends in hill roads is taken as**

- (A) 20 kmph

- (B) 30 kmph

- (C) 40 kmph

- (D) 50 kmph

**10. Thickness of a pavement may be reduced considerably by**

- (A) Compaction
of soil

- (B) Stabilization
of soil

- (C) Drainage of
soil

- (D) Combination
of all the above

**11. To compensate the loss of tractive force of vehicles along curves of radius**

*R*, the percentage reduction of gradient, is- (A) 50/

*R*

- (B) 75/

*R*

- (C) 100/

*R*

- (D) 125/

*R*

**12. The maximum allowable Los Angeles abrasion value for high quality surface course is**

- (A) 10 %

- (B) 20 %

- (C) 30 %

- (D) 45 %

**13. The minimum ratio of the radii of two circular curves of a compound curve, is kept**

- (A) 1.25

- (B) 1.5

- (C) 1.75

- (D) 2.0

**14. The distance traveled by a moving vehicle during perception and brake reaction times, is known as**

- (A) Sight
distance

- (B) Stopping
distance

- (C) Lag distance

- (D) None of
these

**15. Rigidity factor for a tyre pressure greater than 7 kg/cm² is**

- (A) Equal to 1

- (B) Less than 1

- (C) Greater than
1

- (D) Zero

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