Which one of the following tests is carried out using a relatively
large diameter plate
to evaluate the load supporting capacity of pavement layers?
(a) California bearing ratio test
(b)California resistance value test
(c) Triaxial compression test
(d) Plate bearing test
(D)
Consider the following aspects of human vision which are important for
a traffic engineer:
1. Field of vision
2. Visual acuity
3. Colour perception
Which of the above aspects are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
(D)
The survey of the highway construction work for preparation of
longitudinal and cross
sections, computations of earth work quantities; and other construction
material and
checking details of geometric design elements is carried out in
(a) Reconnaissance survey
(b) Preliminary survey
(c) Location of final alignment
(d) Detailed survey
(B)
The raising of outer rail over inner rail is called
(a)
Cant deficiency
(b)
Cant
(c) Capacity of the track
(d) Center bound sleepers
(B)
Super elevation or cant –
Outer rail raised with respect to inner rail in order to generate centripetal force against
centrifugal force which occurs outward in horizontal plane from CG of vehicle.
The longitudinal joints in cement concrete pavements are
constructed with suitable
(a) tie bars
(b) torsion rods
(c) small spacing
(d) shear rods
(A)
In which one of the following systems the optimum road length is
calculated for an area
based on the concept of obtaining maximum utility per unit length of
road?
(a) Saturation system
(b) Unsaturated system
(c) Minimum utility system
(d) Average utility system
(A)
Which one of the following alignments is obtained by development
accompanied by tunneling?
(a) Valley alignment
(b) Cross country alignment
(c) Mountain alignment
(d) Zig-zag alignment
(C)
The alignment of a tunnel constructed as part of a development project would depend
on various factors, such as the topography of the area, the geological conditions, and
the tunnel's purpose. A zig-zag alignment would not typically be used in tunnel
construction, as it would increase construction costs and complexity without providing
significant benefits. A "Mountain Alignment" typically refers to a tunnel alignment that
follows the contour of a mountain or hill. This type of alignment is often used when a
tunnel is needed to bypass a mountainous area or provide access to resources within
a mountain. However, it is important to note that the alignment chosen for a tunneling
project would depend on a wide range of factors, such as the area's geology, the
presence of other infrastructure, and the project's specific needs.
The design speed for a two-way traffic on a two way lane road is 50
kmph. What is
the value of safe stopping sight distance, if co-efficient of friction
is 0.37 and reaction
time of driver as 2.5 sec?
Consider the following statements related to economic design of
modern track:
1. Axle loading, possible
weight reduction of the rolling stock and increase in number
of axles should be rationalized.
2. Rail to sleeper
fastenings for different type of sleepers at high speeds should have
definite standards.
3. The weight of the
sleeper and the rail may not be related to each other.
Which of the above statements are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
(A)
A modern track has to be rationalized in view of the following to achieve over-all economy
on Indian Railways.
i. Rail requirements, like quality of steel, design of rail-section and manufacturing
process, should be rationalized so that the rail section can sustain the expected
stresses due to rolling loads.
ii. Wheel diameter in relation to qualities of rail steel and steel of the wheel tyre should
also be rationalized so as to keep Hertzian stresses within the endurance limits of
the steel.
iii. Axle loading, possible weight reduction of the rolling stock and increase in number
of axles should be rationalized.
iv. Rail-to-sleeper fastenings i.e., elastic fastenings for different types of sleepers at
high speeds should have definite standards.
v. The weight of the sleeper and the rail should be correctly related to each other
Read the following information and
answer the two items that follow:The chainage of the intersection point
of two straights is 1060 m, and the angle of intersection is
120°. If radius of a circular curve to be set out is 570 m, and
peg interval Is 30 m.
What is the length of the curve?
(a) 190π m
(b) 185π m
(c) 180π m
(d) 170π m
(A) 190π m
Length of curve = Angle subtended at O × Radius
L = π/3 × 570 = = 190π m
What is the length of the long chord?
(a) 370 m
(b) 470 m
(c) 670 m
(d) 570 m
(D) 570 m
Length of long chord = AB =2Rsin (∆/2) = 2Rsin (60/2) =2Rsin
(30)
2×R×1/2 = 2×570×1/2= 570m
In Map versus Aerial photograph, due to
symbolic representation the clarity of details
is
(a) less on map than on a photo
(b) more on map than on a photo
(c) less on a photo than on map
(d) more on a photo than on map
Ans. (b)
Differences between Map and Aerial
Photograph,
1. The map is an orthographic projection, whereas an aerial photograph
is a central
projection, i.e. perspective projection.
2. The map has a single constant scale, whereas it varies from point to
point depending
upon their elevations in an aerial photograph. In the case of the
photograph, the
terrain area which has higher elevation is closer to the camera and
therefore appears larger than the terrains area laying at a lower
elevation.
3. The number of details on a map are selective whereas in a aerial
photograph there
is a large number of details.
4. Due to the symbolic representation, the clarity of details is more
on the maps than
on photo.
next
Question-Answer civil engineering study
Other Important Topic Related to Surveying in Civil engineering
The levelling is carried out between two
stations P and Q separated by 1000 m. The
Back Sight (BS) reading is noted as 0.70 m on station P, whose BM is
240.00 m. Next,
the Fore Sight (FS) reading is taken on an intermediate point and the
value is 1.25 m.
Then the instrument is shifted to a new location and BS is taken on
intermediate point
as 0.85 m. Finally, the FS reading is taken on station Q as 1.10 m.
What is the Reduced
Level of Q?
A line AB between the stations A and B was measured as 348.28 m using a 20 m tape,
too short by 0.05 m. What is the correct length of line AB?
(a) 349.15 m
(b) 348.41 m
(c) 347.41 m
(d) 346.15 m
Ans. (c)
giver Designated length of tape L = 20m
Incorrect length of tape,L' = 20 - .05 = 19.95
Measured length of line AB l' = 248.28 m
Let, True length of AB = l
As we know, l×L = L'×l' = 20 × l = 248.28 × 19.95 = 347.41
Which one of the following consists of horizontal and vertical location of
certain points
by linear and angular measurements and is made to determine the natural features of
a country?
(a) Cadastral survey
(b) Topographical survey
(c) Astronomical survey
(d) Military survey
Ans. (b)
1 Topographical survey consists of horizontal and
vertical location of certain points by
linear and angular measurement and is made to determine the natural features of a
country such as rivers, streams, lakes hills etc. and artificial features as roads, railways,
canals, towns and villages.
Which one of the following statements is NOT correct?
(a) Trigonometric levelling has never been used in geodetic surveys
(b) The differences in elevation are determined indirectly by trigonometric levelling
(c) The electronic distance measurement devices can be used for measuring the vertical
distances
(d) The combined effects of curvature and refraction produce vertical readings that are
slightly too short
Ans. (a)
1 Trigonometric leveling is used in geodetic surveying, particularly in areas where traditional
leveling methods are not feasible or practical, such as in mountainous regions or areas
with dense vegetation.
Dip fault runs parallel to the dip
of the bed,
cut across the strike of the bed.
It is a
fault that runs perpendicular to the strike of the affected rocks.
i.e. parallel to the plane
of the angle of dip of the rocks
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