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Quiz 3
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Q.1
The maximum limit of water absorption for aggregate suitable for road construction is
0.4 %
0.6 %
0.8 %
1.0 %
Q.2
If ruling gradient is I in 20 and there is also a horizontal curve of radius 76 m, then the compensated grade should be
3 %
4%
5 %
6%
Q.3
Camber in the road is provided for
effective drainage
counteracting the centrifugal force
having proper sight distance
none of the above
Q.4
For design, that length of transition curve should be taken which is
based on allowable rate of change of centrifugal acceleration
based on rate of change of super elevation
higher of (A) and (B)
smaller of (A) and (B)
Q.5
When the speed of traffic flow becomes zero,then
traffic density attains maximum value whereas traffic volume becomes zero
traffic density and traffic volume both attain maximum value
traffic density and traffic volume both become zero
traffic density becomes zero whereas traffic volume attains maximum value
Q.6
For water bound macadam roads in localities of heavy rainfall, the recommended value of camber is
1 in 30
1 in 36
1 in 48
1 in 60
Q.7
Maximum number of vehicles can be parked with
parallel parking
30° angle parking
45° angle parking
90° angle parking
Q.8
The stopping sight distance depends upon
total reaction time of driver
speed of vehicle
efficiency of brakes
all of the above
Q.9
With increase in speed of the traffic stream, the minimum spacing of vehicles
increases
decreases
first decreases and then increases after reaching a minimum value at optimum speed
first increases and then decreases after reaching a maximum value at optimum speed
Q.10
With increase in speed of the traffic stream, the maximum capacity of the lane
increases
decreases
first increases and then decreases after reaching a maximum value at optimum speed
first decreases and then increases after reaching a minimum value at optimum speed
Q.11
The shoulder provided along the road edge should be
rougher than the traffic lanes
smoother than the traffic lanes
of same colour as that of the pavement
of very low load bearing capacity
Q.12
As per IRC recommendations, the maximum limit of super elevation for mixed traffic in plain terrain is
1 in 15
1 in 12.5
1 in 10
equal to camber
Q.13
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
less than b/2h and greater than co-efficient of lateral friction
less than b/2h and also less than co-efficient of lateral friction
greater than b/2h and less than co-efficient of lateral friction
greater than b/2h and also greater than coefficient of lateral friction
Q.14
Percentage of free carbon in bitumen is
more than that in tar
less than that in tar
equal to that in tar
none of the above
Q.15
The thickness of bituminous carpet varies from
20 to 25 mm
50 to 75 mm
75 to 100 mm
100 to 120 mm
Q.16
Which of the following represents a carpet of sand-bitumen mix without coarse aggregates ?
mastic asphalt
sheet asphalt
bituminous carpet
bituminous concrete
Q.17
If the group index value of subgrade is between 5 and 9, then the subgrade is treated as
good
fair
poor
very poor
Q.18
In hill roads the side drains arc provided
only on the hill side of road
only on the opposite side of hill
on both sides of road
none of the above
Q.19
The most efficient traffic signal system is
simultaneous system
alternate system
flexible progressive system
simple progressive system
Q.20
The terrain may be classified as rolling terrain if the cross slope of land is
upto 10%
between 10% and 25%
between 25% and 60%
more than 60%
Q.21
Rigidity factor for a tyre pressure greater than 7 kg/cm² is
equal to 1
less than 1
greater than 1
zero
Q.22
The particular places where pedestrians are to cross the pavement are properly marked by the pavement marking known as
stop lines
turn markings
crosswalk lines
lane lines
Q.23
The ductility value of bitumen for suitability in road construction should not be less than
30 cm
40 cm
50 cm
60 cm
Q.24
The entrance and exit curves of a rotary have
equal radii and equal widths of pavement
equal radii but pavement width is more at entrance than at exit curve
equal pavement widths but radius is more at entrance curve than at exit curve
different radii and different widths of pavement
Q.25
Highway facilities are designed for
annual average hourly volume
annual average daily traffic
thirtieth highest hourly volume
peak hourly volume of the year
Q.26
The provision of traffic signals at intersections
reduces right angled and rear end collisions
increases right angled and rear end collisions
reduces right angled collisions but may increase rear end collisions
reduces rear end collisions but may increase right angled collisions
Q.27
In CBR test the value of CBR is calculated at
2.5 mm penetration only
5.0 mm penetration only
7.5 mm penetration only
both 2.5 mm and 5.0 mm penetrations
Q.28
Nagpur road plan formula were prepared by assuming
rectangular or block road pattern
radial or star and block road pattern
radial or star and circular road pattern
radial or star and grid road pattern
Q.29
When the width of car parking space and width of street are limited, generally preferred parking system is
Parallel parking
45° angle parking
65° angle parking
90° angle parking
Q.30
The walls which are necessary on the hill side of roadway where earth has to be retained from slipping is known as
retaining wall
breast wall
parapet wall
none of the above
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