A. 10%
B. 20 %
C. 30%
D. 45 %
Related Mcqs:
- Los Angeles testing machine is used to conduct______________?
A. abrasion test
B. impact test
C. attrition test
D. crushing strength test - Compared to a level surface, on a descending gradient the stopping sight distance is_______________?
A. less
B. more
C. same
D. dependent on the speed - As per IRC recommendations, the maximum limit of super elevation for mixed traffic in plain terrain is_______________?
A. 1 in 15
B. 1 in 12.5
C. 1 in 10
D. equal to camber - For water bound macadam roads in localities of heavy rainfall, the recommended value of camber is_______________?
A. 1 in 30
B. 1 in 36
C. 1 in 48
D. 1 in 60 - Which of the following is considered to be the highest quality construction in the group of black top pavements ?
A. mastic asphalt
B. sheet asphalt
C. bituminous carpet
D. bituminous concrete - For a constant value of coefficient of lateral friction, the value of required super-elevation increases with_______________?
A. increase in both speed and radius of curve
B. decrease in both speed and radius of curve
C. increase in speed and with decrease in radius of curve
D. decrease in speed and with increase in radius of curve - Coefficient of friction is less when the pavement surface is________________?
A. rough
B. dry
C. smooth and dry
D. smooth and wet - When the path travelled along the road surface is more than the circumferential movement of the wheels due to rotation, then it results in______________?
A. slipping
B. skidding
C. turning
D. revolving - If b is the wheel track of a vehicle and h is the height of centre of gravity above road surface, then to avoid overturning and lateral skidding on a horizontal curve, the centrifugal ratio should always be________________?
A. less than b/2h and greater than co-efficient of lateral friction
B. less than b/2h and also less than co-efficient of lateral friction
C. greater than b/2h and less than co-efficient of lateral friction
D. greater than b/2h and also greater than coefficient of lateral friction - 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
