List Of 100 Surveying Objective Question
1.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
ANSWER : : outside of one handle to outside of other handle
2.The maximum tolerance in a 20 m chain is
�2 mm
�3 mm
�5 mm
�8 mm
ANSWER : : �5 mm
3.Which of the following methods of offsets involves less measurement on the ground?
method of perpendicular offsets
method of oblique offsets
method of ties
all involve equal measurement on the ground
ANSWER : : method of perpendicular offsets
4.The permissible error in chaining for measurement with chain on rough or hilly ground is
1 in 100
1 in 250
1 in 500
1 in 1000
ANSWER : : 1 in 250
5.For accurate work, the steel band should always be used in preference to chain because the steel band
is lighter than chain
is easier to handle
is practically inextensible and is not liable to kinks when in use
can be easily repaired in the field
ANSWER : : is practically inextensible and is not liable to kinks when in use
6.Normal tension is that pull which
is used at the time of standardising the tape
neutralizes the effect due to pull and sag
makes the correction due to sag equal to zero
makes the correction due to pull equal to zero
ANSWER : : neutralizes the effect due to pull and sag
7.The correction for sag is
always additive
always subtractive
always zero
sometimes additive and sometimes subtractive
ANSWER : : always subtractive
8.For a line AB
the forebearing of AB and back bearing of AB differ by 180�
the forebearing of AB and back bearing of BA differ by 180�
both (a) and (b) are correct.
none is correct
ANSWER : : the forebearing of AB and back bearing of AB differ by 180�
9.Cross staff is an instrument used for
measuring approximate horizontal angles
setting out right angles
measuring bearings of the lines
none of the above
ANSWER : s: b
10.Select the incorrect statement.
The true meridians at different places are parallel to each other.
The true meridian at any place is not variable.
The true meridians converge to a point in northern and southern hemispheres.
The maps prepared by national survey departments of any country are based on true meridians.
ANSWER : : The true meridians at different places are parallel to each other.
11.If the length of a chain is found to be short on testing, it can be adjusted by
straightening the links
removing one or more small circular rings
closing the joints of the rings if opened out
all of the above
ANSWER : : straightening the links
12.Which of the following is not used in measuring perpendicular offsets ?
line ranger
steel tape
optical square
cross staff
ANSWER : : line ranger
13.The horizontal angle between the true meridian and magnetic meridian at a place is called
azimuth
declination
local attraction
magnetic bearing
ANSWER : : declination
14.The prismatic compass and surveyor’s compass
give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
both give QB of a line and WCB of a line
both give QB of a line
both give WCB of a line
ANSWER : : give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
15.Which of the following angles can be set out with the help of French cross staff?
45� only
90� only
either 45� or 90�
any angle
ANSWER : : either 45� or 90�
16.If the true bearing of a line AB is 269� 30′, then the azimuth of the line AB is
0� 30′
89� 30′
90� 30′
269� 30′
ANSWER : : 90� 30′
17.For a well-conditioned triangle, no angle should be less than
20�
30�
45�
60�
ANSWER : : 30�
18.In the quadrantal bearing system, a whole circle bearing of 293� 30′ can be expressed as
W23�30’N
N66�30’W
S113�30’N
N23�30’W
ANSWER : : N66�30’W
19.The angle of intersection of the two plane mirrors of an optical square is
30�
45�
60�
90�
ANSWER : : 45�
20.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
ANSWER : : presence of magnetic substances near the instrument
21.In the prismatic compass
the magnetic needle moves with the box
the line of the sight does not move with the box
the magnetic needle and graduated circle do not move with the box
the graduated circle is fixed to the box and the magnetic needle always remains in the N-S direction
ANSWER : : the magnetic needle and graduated circle do not move with the box
22.If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167�, the magnetic declination at that place is
77� N
23� S
13� E
13� W
ANSWER : : 13� E
23.A negative declination shows that the magnetic meridian is to the
eastern side of the true meridian
western side of the true meridian
southern side of the true meridian
none of the above
ANSWER : : western side of the true meridian
24.A metallic tape is made of
steel
invar
linen
cloth and wires
ANSWER : : cloth and wires
25.The allowable length of an offset depends upon the
degree of accuracy required
method of setting out the perpendiculars and nature of ground
scale of plotting
all of the above
ANSWER : : all of the above
26.In an internal focussing type of telescope, the lens provided is
concave
convex
plano-convex
plano-concave
ANSWER : : concave
27.If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is
99.345 m
100.345 m
100.655m
101.870m
ANSWER : : 99.345 m
28.Which of the following errors is not eliminated by the method of repetition of horizontal angle measurement ?
error due to eccentricity of verniers
error due to displacement of station signals
error due to wrong adjustment of line of collimation and trunnion axis
error due to inaccurate graduation
ANSWER : : error due to displacement of station signals
29.Which of the following errors can be eliminated by taking mean of bot face observations ?
error due to imperfect graduations
error due to eccentricity of verniers
error due to imperfect adjustment of plate levels
error due to line of collimation not being perpendicular to horizontal axis
ANSWER : : error due to line of collimation not being perpendicular to horizontal axis
30.A telescope is said to be inverted if its
vertical circle is to its right and the bubble of the telescope is down
vertical circle is to its right and the bubble of the telescope is up
vertical circle is to its left and the bubble of the telescope is down
vertical circle is to its left and the bubble of the telescope is up
ANSWER : : vertical circle is to its right and the bubble of the telescope is down
31.If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated
on its outer spindle with a relative motion between the vernier and graduated scale of lower plate
on its outer spindle without a relative motion between the vernier and gra-duated scale of lower plate
on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate
on its inner spindle without a relative motion between the vernier and the graduated scale of lower plate
ANSWER : : on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate
32.The rise and fall method of levelling provides a complete check on
backsight
intermediate sight
foresight
all of the above
ANSWER : s: d
33.The adjustment of horizontal cross hair is required particularly when the instrument is used for
leveling
prolonging a straight line
measurement of horizontal angles
all of the above
ANSWER : : leveling
34.The process of turning the telescope about the vertical axis in horizontal plane is known as
transiting
reversing
plunging
swinging
ANSWER : : swinging
35.Height of instrument method of levelling is
more accurate than rise and fall method
less accurate than rise and fall method
quicker and less tedious for large number of intermediate sights
none of the above
ANSWER : : quicker and less tedious for large number of intermediate sights
36.In the double application of principle of reversion, the apparent error is
equal to true error
half the true error
two times the true error
four times the true error
ANSWER : : four times the true error
37.The error due to eccentricity of inner and outer axes can be eliminated by
reading both verniers and taking the mean of the two
taking both face observations and taking the mean of the two
double sighting
taking mean of several readings distributed over different portions of the graduated circle
ANSWER : : reading both verniers and taking the mean of the two
38.The cross hairs in the surveying telescope are placed
midway between eye piece and objec�tive lens
much closer to the eye-piece than to the objective lens
much closer to the objective lens than to the eye piece
anywhere between eye-piece and objective lens
ANSWER : : much closer to the eye-piece than to the objective lens
39.Agate cap is fitted with a
cross staff
level
chain
prismatic compass
ANSWER : : prismatic compass
40.If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will
increase
decrease
not change
either ‘a’ or ‘b’
ANSWER : : increase
41.Which of the following errors cannot be eliminated by taking both face observations ?
error due to horizontal axis not being perpendicular to the vertical axis
index error i.e. error due to imperfect adjustment of the vertical circle vernier
error due to non-parallelism of the axis of telescope level and line of collimation
none of the above
ANSWER : : none of the above
42.The following sights are taken on a “turning point”
foresight only
backsight only
foresight and backsight
foresight and intermediate sight
ANSWER : : foresight and backsight
43.For which of the following permanent adjustments of theodolite, the spire test is used ?
adjustment of plate levels
adjustment of line of sight
adjustment of horizontal axis
adjustment of altitude bubble and vertical index frame
ANSWER : : adjustment of horizontal axis
44.Which of the following errors can be neutralised by setting the level midway between the two stations ?
error due to curvature only
error due to refraction only
error due to both curvature and re-fraction
none of the above
ANSWER : : error due to both curvature and re-fraction
45.If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to i) altitude bubble on index frame ii) altitude bubble on index frame if it is to be used as a level iii) altitude bubble on telescope iv) altitude bubble on telescope if it is to be used as a level The correct answer is
only (i)
both (i) and (iv)
only (iii)
both (ii) and (iii)
ANSWER : : both (i) and (iv)
46.Theodolite is an instrument used for
tightening the capstan-headed nuts of level tube
measurement of horizontal angles only
measurement of vertical angles only
measurement of both horizontal and vertical angles
ANSWER : : measurement of both horizontal and vertical angles
47.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
ANSWER : : line parallel to the mean spheriodal surface of earth
48.Size of a theodolite is specified by
the length of telescope
the diameter of vertical circle
the diameter of lower plate
the diameter of upper plate
ANSWER : : the diameter of lower plate
49.Which of the following is not the function of levelling head ?
to support the main part of the instrument
to attach the theodolite to the tripod
to provide a means for leveling the theodolite
none of the above
ANSWER : : none of the above
50.The temporary adjustments of a prismatic compass are i) Centering ii) Levelling iii) Focusing the prism The correct order is
(0, (iii), 00
(0, (ii), (iii)
(ii), (iii), 0)
(in), (i), (ii)
ANSWER : : (0, (ii), (iii)
51.Dumpy level is most suitable when
the instrument is to be shifted frequently
fly levelling is being done over long distance
many readings are to be taken from a single setting of the instrument
all of the above
ANSWER : : many readings are to be taken from a single setting of the instrument
52.If the staff is not held vertical at a level�ling station, the reduced level calculated from the observation would be
true R.L.
more than true R.L.
less than true R.L.
none of the above
ANSWER : : less than true R.L.
53.A series of closely spaced contour lines represents a
steep slope
gentle slope
uniform slope
plane surface
ANSWER : : steep slope
54.In the cross-section method of indirect contouring, the spacing of cross-sections depends upon i) contour interval ii) scale of plan iii) characteristics of ground The correct answer is
only (i)
(i)and(ii)
(ii) and (iii)
(i), (ii) and (iii)
ANSWER : : (i), (ii) and (iii)
55.Contour interval is
inversely proportional to the scale of the map
directly proportional to the flatness of ground
larger for accurate works
larger if the time available is more
ANSWER : : inversely proportional to the scale of the map
56.Select the correct statement.
A contour is not necessarily a closed curve.
A contour represents a ridge line if the concave side of lower value con�tour lies towards the higher value contour.
Two contours of different elevations do not cross each other except in case of an overhanging cliff.
All of the above statements are correct.
ANSWER : : Two contours of different elevations do not cross each other except in case of an overhanging cliff.
57.Which of the following statements is in-correct ?
Error due to refraction may not be completely eliminated by reciprocal levelling.
Tilting levels are commonly used for precision work.
The last reading of levelling is always a foresight.
All of the above statements are incorrect.
ANSWER : : All of the above statements are incorrect.
58.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
ANSWER : : radius of level tube
59.As applied to staff readings, the corrections for curvature and refraction are respectively The above table shows a part of a level field book. The value of X should be
98.70
100.00
102.30
103.30
ANSWER : : 100.00
60.The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be
equidistant from A and B
closer to the higher station
closer to the lower station
as far as possible from the line AB
ANSWER : : equidistant from A and B
61.Which of the following methods of con-touring is most suitable for a hilly terrain ?
direct method
square method
cross-sections method
tacheometric method
ANSWER : : tacheometric method
62.Select the correct statement.
Contour interval on any map is kept constant.
Direct method of contouring is cheap�er than indirect method.
Inter-visibility of points on a contour map cannot be ascertained.
Slope of a hill cannot be determined with the help of contours.
ANSWER : : Contour interval on any map is kept constant.
63.With the rise of temperature, the sensitivity of a bubble tube
decreases
increases
remains unaffected
none of the above
ANSWER : : decreases
64.The difference between a level line and a horizontal line is that
level line is a curved line while hori-zontal line is a straight line
level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line
horizontal line is normal to plumb line while level line may not be normal to the plumb line
both are same
ANSWER : : level line is a curved line while hori-zontal line is a straight line
65.Contour interval is
the vertical distance between two con-secutive contours
the horizontal distance between two consecutive contours
the vertical distance between two points on same contour
the horizontal distance between two points on same contour
ANSWER : : the vertical distance between two con-secutive contours
66.The suitable contour interval for a map with scale 1 : 10000 is
2 m
5m
10 m
20 m
ANSWER : : 2 m
67.The R.L, of the point A which is on the floor is 100 m and back sight reading on A is 2.455 m. If the foresight reading on the point B which is on the ceiling is 2.745 m, the R.L. of point B will be
94.80 m
99.71 m
100.29 m
105.20 m
ANSWER : : 105.20 m
68.The sensitivity of a bubble tube can be increased by
increasing the diameter of the tube
decreasing the length of bubble
increasing the viscosity of liquid
decreasing the radius of curvature of tube
ANSWER : : increasing the diameter of the tube
69.If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to
d
1/d
d2
1/d2
ANSWER : : d2
70.In direct method of contouring, the process of locating or identifying points lying on a contour is called
ranging
centring
horizontal control
vertical control
ANSWER : : vertical control
71.Direct method of contouring is
a quick method
adopted for large surveys only
most accurate method
suitable for hilly terrains
ANSWER : : most accurate method
72.Refraction correction
completely eliminates curvature correction
partially eliminates curvature correction
adds to the curvature correction
has no effect on curvature correction
ANSWER : : partially eliminates curvature correction
73.An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as
contour line
horizontal equivalent
contour interval
contour gradient
ANSWER : : contour gradient
74.Closed contours, with higher value inwards, represent a
depression
hillock
plain surface
none of the above
ANSWER : : hillock
75.If in a closed traverse, the sum of the north latitudes is more than the sum of the south latitudes and also the sum of west departures is more than the sum of the east departures, the bearing of the closing line is in the
NE quadrant
SE quadrant
NW quadrant
SW quadrant
ANSWER : : SE quadrant
76.The two point problem and three point problem are methods of
resection
orientation
traversing
resection and orientation
ANSWER : : resection and orientation
77.If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant is
0.1
0.4
0.6
1.33
ANSWER : : 0.4
78.Subtense bar is an instrument used for
levelling
measurement of horizontal distances in plane areas
measurement of horizontal distances in undulated areas
measurement of angles
ANSWER : : measurement of horizontal distances in undulated areas
79.If the reduced bearing of a line AB is N60�W and length is 100 m, then the latitude and departure respectively of the line AB will be
+50 m, +86.6 m
+86.6 m, -50 m
+50m, -86.6 m
+70.7 m,-50 m
ANSWER : : +86.6 m, -50 m
80.Overturning of vehicles on a curve can be avoided by using
compound curve
vertical curve
reverse curve
transition curve
ANSWER : : transition curve
81.The methods used for locating the plane table stations are i) radiation ii) traversing iii) intersection iv) resection The correct answer is
(i) and (ii)
(iii) and (iv)
(ii) and (iv)
(i) and (iii)
ANSWER : : (ii) and (iv)
82.The resection by two point problem as compared to three point problem
gives more accurate problem
takes less time
requires more labour
none of the above
ANSWER : : requires more labour
83.Which of the following methods of plane table surveying is used to locate the position of an inaccessible point ?
radiation
intersection
traversing
resection
ANSWER : : intersection
84.The number of horizontal cross wires in a stadia diaphragm is
one
two
three
four
ANSWER : : three
85.The angle between the prolongation of the preceding line and the forward line of a traverse is called
deflection angle
included angle
direct angle
none of the above
ANSWER : : deflection angle
86.Transit rule of adjusting the consecutive coordinates of a traverse is used where
linear and angular measurements of the traverse are of equal accuracy
angular measurements are more accurate than linear measurements
linear measurements are more accurate than angular measurements
all of the above
ANSWER : : angular measurements are more accurate than linear measurements
87.If the intercept on a vertical staff is ob-served as 0.75 m from a tacheometer, the horizontal distance between tacheometer and staff station is
7.5 m
25 m
50
75 m
ANSWER : : 75 m
88.The instrument used for accurate centering in plane table survey is
spirit level
alidade
plumbing fork
trough compass
ANSWER : : plumbing fork
89.The size of a plane table is
750 mm x 900 mm
600 mm x 750 mm
450 mm x 600 mm
300 mm x 450 mm
ANSWER : s: b
90.Detailed plotting is generally done by
radiation
traversing
resection
all of the above
ANSWER : : radiation
91.After fixing the plane table to the tripod, the main operations which are needed at each plane table station are i) levelling ii) orientation iii) centering The correct sequence of these operations is
(i), (ii),.(iii)
(i), (iii), (ii)
(iii), (i), (ii)
(ii), (Hi), (i)
ANSWER : : (i), (iii), (ii)
92.For a tacheometer the additive and multi-plying constants are respectively
0 and 100
100 and 0
0 and 0
100 and 100
ANSWER : : 0 and 100
93.The process of determining the locations of the instrument station by drawing re sectors from the locations of the known stations is called
radiation
intersection
resection
traversing
ANSWER : : resection
94.Intersection method of detailed plotting is most suitable for
forests
urban areas
hilly areas
plains
ANSWER : : hilly areas
95.Horizontal distances obtained by thermometric observations
require slope correction
require tension correction
require slope and tension corrections
do not require slope and tension corrections
ANSWER : : do not require slope and tension corrections
96.Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations ?
measuring angle and distance from one transit station
measuring angles to the point from at least two stations
measuring angle at one station and distance from other
measuring distance from two points on traverse line
ANSWER : : measuring angles to the point from at least two stations
97.Bowditch rule is applied to
an open traverse for graphical adjustment
a closed traverse for adjustment of closing error
determine the effect of local attraction
none of the above
ANSWER : : a closed traverse for adjustment of closing error
98.The type of surveying which requires least office work is
tacheomefry
trigonometrical levelling
plane table surveying
theodolite surveying
ANSWER : : plane table surveying
99.Three point problem can be solved by
Tracing paper method
Bessels method
Lehman’s method
all of the above
ANSWER : : all of the above
100.If in a closed traverse, the sum of the north latitudes is more than the sum of the south latitudes and also the sum of west departures is more than the sum of the east departures, the bearing of the closing line is in the
NE quadrant
SE quadrant
NW quadrant
SW quadrant
ANSWER : : SE quadrant
102.The two point problem and three point problem are methods of
resection
orientation
traversing
resection and orientation
ANSWER : : resection and orientation
103.If the reduced bearing of a line AB is N60�W and length is 100 m, then the latitude and departure respectively of the line AB will be
+50 m, +86.6 m
+86.6 m, -50 m
+50m, -86.6 m
+70.7 m,-50 m
ANSWER : : +86.6 m, -50 m