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Free download in PDF Highway Engineering Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for competitive exams. These short solved questions or quizzes are provided by Gkseries.
(21)
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
(22)
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
Answer: an ascending gradient meets with a descending gradient
(23)
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
(24)
Which of the following shapes is preferred in a valley curve ?
[A]
simple parabola
[B]
cubic parabola
[C]
spiral
[D]
lemniscate
(25)
The camber of road should be approximately equal to
[A]
longitudinal gradient
[B]
two times the longitudinal gradient
[C]
three times the longitudinal gradient
[D]
half the longitudinal gradient
Answer: half the longitudinal gradient
(26)
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%
(27)
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
(28)
The maximum design gradient for vertical profile of a road is
[A]
ruling gradient
[B]
limiting gradient
[C]
exceptional gradient
[D]
minimum gradient
(29)
For design, that length of transition curve should be taken which is
[A]
based on allowable rate of change of centrifugal acceleration
[B]
based on rate of change of super elevation
[C]
higher of (a) and (b)
[D]
smaller of (a) and (b)
Answer: higher of (a) and (b)
(30)
The transition curve used in the horizontal alignment of highways as per IRC recommendations is
[A]
spiral
[B]
lemniscate
[C]
cubic parabola
[D]
any of the above
31
In case of hill roads, the extra widening is generally provided
[A]
equally on inner and outer sides of the curve
[B]
fully on the inner side of the curve
[C]
fully on the outer side of the curve
[D]
one-fourth on inner side and three-fourth on outer side of the curve
Answer: fully on the inner side of the curve
32
Select the correct statement.
[A]
Psychological extra widening depends on the number of traffic lanes.
[B]
Mechanical extra widening depends on the speed of vehicle.
[C]
Psychological extra widening depends on the length of wheel base.
[D]
Psychological extra widening depends on the speed of vehicle.
Answer: Psychological extra widening depends on the speed of vehicle.
33
The attainment of super elevation by rotation of pavement about the inner edge of the pavement
[A]
is preferable in steep terrain
[B]
results in balancing the earthwork
[C]
avoids the drainage problem in flat terrain
[D]
does not change the vertical alignment of road
Answer: avoids the drainage problem in flat terrain
34
The absolute minimum radius of curve for safe operation for a speed of 110 kmph is
[A]
110 m
[B]
220 m
[C]
440 m
[D]
577 m
35
To calculate the minimum value of ruling radius of horizontal curves in plains, the design speed is given by
[A]
8 kmph
[B]
12kmph
[C]
16kmph
[D]
20 kmph
36
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
Answer: decrease in speed and with increase in radius of curve
37
On a horizontal curve if the pavement is kept horizontal across the alignment, then the pressure on the outer wheels will be
[A]
more than the pressure on inner wheels
[B]
less than the pressure on inner wheels
[C]
equal to the pressure on inner wheels
[D]
zero
Answer: more than the pressure on inner wheels
38
For the design of super elevation for mixed traffic conditions, the speed is reduced by
[A]
15%
[B]
20%
[C]
25%
[D]
75%
39
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
40
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
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