Practice Surveying Multiple Choice Questions with Answers Quiz-14

Q.1.

The main principle of surveying is to work

from part to the whole
from whole to the part
from higher level to the lower level
from lower level to higher level.

Q.2.

One of the tacheometric constants is additive, the other constant, is

subtractive constant
multiplying constant
dividing constant
indicative constant.

Q.3.

One of the tacheometric constants is additive, the other constant, is

subtractive constant
multiplying constant
dividing constant
indicative constant.

Q.4.

Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 inthe sight on the down-slope, must be less than

30 m
25 m
20 m
15 m

Q.5.

In chain surveying tie lines are primarily provided

to check the accuracy of the survey
to take offsets for detail survey
to avoid long offsets from chain lines
to increase the number of chain lines.

Q.6.

Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following

chain surveying
compass surveying
plan table surveying
tacheometric surveying.

Q.7.

The 'fix' of a plane table station with three known points, is bad if the plane table station lies

in the great triangle
outside the great triangle
on the circumference of the circumscribing circle
none of these.

Q.8.

The accuracy of measurement in chain surveying, does not depend upon

length of the offset
scale of the plotting
importance of the features
general layout of the chain lines.

Q.9.

True meridians are generally preferred to magnetic meridians because

these converge to a point
these change due to change in time
these remain constant.
None of these.

Q.10.

For the construction of highway (or railway)

longitudinal sections are required
cross sections are required
both longitudinal and cross sections are required
none of these.

Q.11.

The accuracy of measurement in chain surveying, does not depend upon

length of the offset
scale of the plotting
importance of the features
general layout of the chain lines.

Q.12.

The limiting length of an offset does not depend upon

accuracy of the work
method of setting out perpendiculars
scale of plotting
indefinite features to be surveyed.

Q.13.

Pick up the correct statement from the following :

Box sextant is used for the measurement of horizontal angles
Cross staff is used for setting out right angles
Gradiometer is used for setting out any required gradient
Line ranger is used for locating intermediate stations on a survey line
All the above.

Q.14.

Pick up the correct statement from the following :

the tangent screw enables to give small movement under conditions of smooth and positive control
standing on the tripod is the levelling head or trib arch
the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical
all the above.

Q.15.

While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is

correctly focussed
not correctly focussed
said to have parallax
free from parallax.

Q.16.

The bearings of the lines AB and BC areand30'. The included angle ABC is

102°
78°
45°
none of these.

Q.17.

If R is the radius of the main curve, θ the angle of deflection, S the shift and L the length of the transition curve, then, total tangent length of the curve, is

(R - S) tan θ/2 - L/2
(R + S) tan θ/2 - L/2
(R + S) tan θ/2 + L/2
(R - S) tan θ/2 + L/2
(R - S) cos θ/2 + L/2

Q.18.

Pick up the correct statement from the following :

the apparent error on reversal is twice the actual error
the correction may be made equal to half the observed discrepancy.
the good results may be obtained from a defective instrument by reversing and taking the mean of two erroneous results
all the above.

Q.19.

If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, should not exceed.

R/10
R/15
R/20
R/25.

Q.20.

The bearings of the lines AB and BC areand30'. The included angle ABC is

102°
78°
45°
none of these.

Q.21.

Closed contours of decreasing values towards their centre, represent

a hill
a depression
a saddle or pass
a river bed.

Q.22.

If θ is the slope of the ground and l is the measured distance, the correction is

2l sin² θ/2
2l cos² θ/2
2l tan² θ/2
2l cot² θ/2.

Q.23.

Closed contours of decreasing values towards their centre, represent

a hill
a depression
a saddle or pass
a river bed.

Q.24.

Direct method of contouring is

a quick method
adopted for large surveys only
most accurate method
suitable for hilly terrains

Q.25.

Local attraction in compass surveying may exist due to

incorrect levelling of the magnetic needle
loss of magnetism of the needle
friction of the needle at the pivot
presence of magnetic substances near the instrument

Q.26.

Refraction correction

completely eliminates curvature correction
partially eliminates curvature correction
adds to the curvature correction
has no effect on curvature correction

Q.27.

The length of a chain is measured from

centre of one handle to centre of other handle
outside of one handle to outside of other handle
outside of one handle to inside of other handle
inside of one handle to inside of other handle

Q.28.

The following sights are taken on a “turning point”

foresight only
backsight only
foresight and backsight
foresight and intermediate sight

Q.29.

Agate cap is fitted with a

cross staff
level
chain
prismatic compass

Q.30.

Three point problem can be solved by

Tracing paper method
Bessels method
Lehman’s method
all of the above

Q.31.

The parallax equation Δp = BmΔh/H - h is applicable to entire overlap of the photographs only if parallax is measured

Normal to base line
Parallel to base line
Both (A) and (B)
Neither (A) nor (B)

Q.32.

A ’level line’ is a

horizontal line
line parallel to the mean spheriodal surface of earth
line passing through the center of cross hairs and the center of eye piece
line passing through the objective lens and the eye-piece of a dumpy or tilting level

Q.33.

Triangulation surveys are carried out for locating

Control points for surveys of large areas
Control points for photogrammetric surveys
Engineering works, i.e. terminal points of long tunnels, bridge abutments, etc.
All the above

Q.34.

Accidental errors

Do not follow any definite mathematical law
Cannot be removed by applying corrections to the observed values
Are generally small
All the above

Q.35.

Which of the following methods of contouring is most suitable for a hilly terrain?

Direct method
Square method
Cross-sections method
Tachometric method

Q.36.

While doing construction work which among the following is more suitable

Traversing
Rise and Fall method
Height of the Instrument method
Compass Surveying

Q.37.

A Nautical mile is

One minute arc of the great circle passing through two points
One minute arc of the longitude
1855.109 m
All the above

Q.38.

The size of a plane table is

750 mm × 900 mm
600 mm × 750 mm
450 mm × 600 mm
300 mm × 450 mm

Q.39.

The horizontal angle between the true meridian and magnetic meridian at a place is called

azimuth
declination
local attraction
magnetic bearing

Q.40.

Sensitiveness of a level tube is designated by

radius of level tube
length of level tube
length of bubble of level tube
none of the above

Q.41.

International Date Line is located along

Standard meridian
Greenwich meridian
Equator
180° longitude

Q.42.

The nautical mile is the length of

1 minute of latitude
1 minute of longitude
1 degree of latitude
1 degree of longitude

Q.43.

The average eye base is assumed as

58 mm
60 mm
62 mm
64 mm

Q.44.

The solar tidal force divided by lunar tidal force is

1/3
1/2
3/4
5/4

Q.45.

Latitude of the observer's position is equal to altitude of

North pole
Pole star
Celestial pole
All the above

Q.46.

The principal plane contains

Nadir point
Iso-centre
Principal point
All the above

Q.47.

The prime vertical passes through

The east point of the horizon
The west point of the horizon
The zenith point of the observer
All the above

Q.48.

The number of horizontal cross wires in a stadia diaphragm is

one
two
three
four

Q.49.

The declination and right ascension of the sun becomesS andrespectively on

March 21
June 21
September 21
December 22

Q.50.

The declination and right ascension of the sun becomesN andrespectively on

March 21
June 21
September 21
December 22

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