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71.

If the width of cariage way is 10 m and the outer edge is 40 cm higher than the inner edge, then the super-elevation required is

A.	1 in 25	B.	1 in 100
C.	1 in 400	D.	none of these

72.

The rate of rise or fall of the road surface along its length, is called

A.	cant	B.	super-elevation
C.	gradient	D.	banking

73.

The difference of levels between two points A and B is 1 metre and their distance apart is 50 metres, the gradient is said to be

A.	1 in 50 or 2%	B.	1 in 5 or 20%
C.	1 in 20 or 5%	D.	none of these

74.

According to Indian Roads Congress, superelevation balances the centrifugal force corresponding to

A.	full design speed	B.	half of the design speed
C.	three-fourth of the design speed	D.	none of these

75.

The gradient of a road depends upon the

A.	nature of traffic	B.	nature of ground
C.	rainfall of the locality	D.	all of these

76.

When the rainfall is more, flatter gradients should be provided in the side drains and the road.

Yes

77.

Roads only meant for slow moving traffic

must

must not

78.

The steepest gradient which is to be permitted on the road is called

A.	maximum gradient	B.	limiting gradient
C.	both (a) and (b)	D.	none of these

79.

The value of maximum gradient for hill roads is

A.	1 in 5	B.	1 in 10
C.	1 in 15	D.	1 in 20

80.

The suitable gradient within which the engineer must endeavour to design the road is called

A.	limiting gradient	B.	ruling gradient
C.	average gradient	D.	exceptional gradient