291. 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%

292. Which of the following shapes is preferred in a valley curve ?
A. simple parabola
B. cubic parabola
C. spiral
D. lemniscate

293. The percentage compensation in gradient for ruling gradient of 4% and horizontal curve of radius 760 m is____________________?
A. 0.1 %
B. 1 %
C. 10%
D. no compensation

294. The camber of road should be approximately equal to___________________?
B. two times the longitudinal gradient
C. three times the longitudinal gradient
D. half the longitudinal gradient

295. In case of summit curves, the deviation angle will be maximum when_______________?
A. an ascending gradient meets with another ascending gradient
B. an ascending gradient meets with a descending gradient
C. a descending gradient meets with another descending gradient
D. an ascending gradient meets with a level surface

296. Enoscope is used to find______________?
A. average speed
B. spot speed
C. space-mean speed
D. time-mean speed

297. 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

298. The value of ruling gradient in plains as per IRC recommendation is______________?
A. 1 in 12
B. 1 m 15
C. 1 in 20
D. 1 in 30

299. 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

300. Highway facilities are designed for_________________?
A. annual average hourly volume
B. annual average daily traffic
C. thirtieth highest hourly volume
D. peak hourly volume of the year

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