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31.

If aggregate impact value is 20 to 30 percent, then it is classified as                        
A. exceptionally strong B. strong
C. satisfactory for road surfacing D. unsuitable for road surfacing



32.

If an ascending gradient of 1 in 50 meets a descending gradient of 1 in 50, the length of summit curve for a stopping sight distance of 80 m will be                        
A. zero B. 64m
C. 80m D. 60m



33.

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




34.

If ruling gradient is I in 20 and there is also a horizontal curve of radius 76 m, then the compensated grade should be                        
A. 3% B. 4%
C. 5% D. 6%



35.

If the average center to center spacing of vehicles is 20 meters, then the basic capacity of a traffic lane at a speed of 50 kmph is                        
A. 2500 vehicles per day B. 2000 vehicles per hour
C. 2500 vehicles per hour D. 1000 vehicles per hour



36.

If the design speed is V kmph and deviation angle is N radians, then the total length of a valley curve in meters is given by the expression                        
A. 0.38 N V3/2 B. 0.38 (NV3)"2
C. 3.8 NV"2 D. 3.8 (NV3)"2



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