Section 3

Question 1

The curve composed of two arcs of different radii having
their centres on the opposite side of the curve, is known
A. a simple curve
B. a compound curve
C. a reverse curve
D. a vertical curve

Answer 1

C. a reverse curve

Question 2

The ratio of the angles subtended at the eye, by the
virtual image and the object, is known as telescope’s
A. resolving power
B. brightness
C. field of view
D. magnification

Answer 2

D. magnification

Question 3

The bubble tube is nearly filled with
A. alcohol or chloroform
B. a liquid which is very mobile
C. a liquid having low freezing point
D. all the above

Answer 3

D. all the above

Question 4

Simpson’s rule for calculating areas states that the area
enclosed by a curvilinear figure divided into an even number
of strips of equal width, is equal to
A. half the width of a strip, multiplied by the sum of two
extreme offsets, twice the sum of remaining odd offsets,
and thrice the sum of the even offsets
B. one third the width of a strip, multiplied by the sum of
two extreme offsets, twice the sum of remaining odd offsets
and four times the sum of the even offsets
C. one third the width of a strip, multiplied by the sum of
two extreme offsets, four times the sum of the remaining
odd offsets, and twice the sum of the even offsets
D. one sixth the width of a strip, multiplied by the sum of the
two extreme offsets, twice the sum of remaining odd offsets
and four times the sum of the even offsets
E. none of these

Answer 4

B. one third the width of a strip, multiplied by the sum of
two extreme offsets, twice the sum of remaining odd offsets
and four times the sum of the even offsets

Question 5

In a constant level tube, size of the bubble remains
constant because upper wall is
A. of relatively larger radius
B. of relatively smaller radius
C. flat
D. convex downwards

Answer 5

A. of relatively larger radius

Question 6

Prismatic compass is considered more accurate than a
surveyor’s compass, because
A. it is provided with a better magnetic needle
B. it is provided with a sliding glass in the object vane
C. its graduations are in whole circle bearings
D. it is provided with a prism to facilitate reading of its
graduated circle
E. both (c) and (d)

Answer 6

D. it is provided with a prism to facilitate reading of its
graduated circle

Question 7

In reciprocal levelling, the error which is not completely
eliminated, is due to
A. earth’s curvature
B. non-adjustment of line of collimation
C. refraction
D. non-adjustment of the bubble tube

Answer 7

C. refraction

Question 8

In tacheometrical observations, vertical staff holding is
generally preferred to normal staffing, due to
A. ease of reduction of observations
B. facility of holding
C. minimum effect of careless holding on the result
D. none of these

Answer 8

C. minimum effect of careless holding on the result

Question 9

Removal of parallax, may be achieved by focussing
A. the objective
B. the eye-piece
C. the objective and the eye-piece
D. none of these

Answer 9

C. the objective and the eye-piece

Question 10

Pick up the correct statement from the following :
A. A level surface is perpendicular at all points to the
direction of gravity
B. A level line lies in level surface
C. A horizontal surface is normal to the direction of gravity
at only one point
D. A horizontal line is tangential to the level surface
E. All the above

Answer 10

E. All the above

Question 11

The direction of steepest slope on a contour, is
A. along the contour
B. at an angle of 45° to the contour
C. at right angles to the contour
D. none of these

Answer 11

C. at right angles to the contour

Question 12

Back bearing of a line is equal to
A. Fore bearing ± 90°
B. Fore bearing ± 180°
C. Fore bearing ± 360°
D. Fore bearing ± 270°

Answer 12

B. Fore bearing ± 180°

Question 13

In an internal focusing telescope
A. the objective is at a fixed distance from the diaphragm
B. the focusing is done by the sliding of a divergent lens.
C. the focusing divergent lens is situated at about the middle
of the tube
D. all the above

Answer 13

D. all the above

Question 14

The longitudinal section of the surface of bubble tube is
A. straight
B. circular
C. parabolic
D. elliptic

Answer 14

B. circular

Question 15

Imaginary line passing through points having equal
magnetic declination is termed as
A. isogon
B. agonic line
C. isoclinic line
D. none of these

Answer 15

A. isogon

Question 16

In case of reduction of levels by the height of instrument
method,
A. ∑ B.S. - ∑ F.S. = difference in R.L.S of the first station and
last station
B. ∑ (R.L. + I + F.S.) - first R.L = ∑ (H.I. + No. of R.L.s.)
C. both (a) and (b) above
D. neither (a) nor (b)

Answer 16

D. neither (a) nor (b)

Question 17

A theodolite is said to be in perfect adjustment if
A. rotation axis is vertical to the transit axis
B. transit axis is perpendicular to line of collimation
C. line of collimation sweeps out a vertical plane while the
telescope is elevated or depressed
D. all the above

Answer 17

D. all the above

Question 18

While rotating the theodolite in the horizontal plane, the
bubble of the bubble tube takes up the same position in its
tube, it indicates
A. the rotation axis is vertical
B. the trummion axis is horizontal
C. the line of collimation is perpendicular to vertical axis
D. none of the above

Answer 18

A. the rotation axis is vertical

Question 19

The main plate of a transit is divided into 1080 equal
divisions. 60 divisions of the vernier coincide exactly with 59
divisions of the main plate. The transit can read angles
accurate upto
A. 5”
B. 10”
C. 15”
D. 20”
E. 30”

Answer 19

D. 20”

Question 20

Pick up the correct statement from the following :
A. the lines of sight while observing back sight and fore sight
lie in the same horizontal plane
B. the staff readings are measurements made vertically
downwards from a horizontal plane
C. the horizontal plane with reference to which staff
readings are taken, coincides with the level surface through
the telescope axis
D. all the above

Answer 20

D. all the above

Question 21

A traverse deflection angle is
A. less than 90°
B. more than 90° but less than 180°
C. the difference between the included angle and 180°
D. the difference between 360° and the included angle

Answer 21

C. the difference between the included angle and 180°

Question 22

While measuring a chain line between two
stations A and B intervened by a raised ground
A. vision gets obstructed
B. chaining gets obstructed
C. both vision and chaining get obstructed
D. all the above

Answer 22

A. vision gets obstructed

Question 23

The Random errors tend to accumulate proportionally to
A. numbers of operations involved
B. reciprocal of operations involved
C. square root of the number of operation involved
D. cube root of the number of operation involved

Answer 23

C. square root of the number of operation involved

Question 24

The true meridian of a place is the line in which earth’s
surface is intersected by a plane through
A. east and west points
B. zenith and nadir points
C. north and south geographical poles
D. north and south magnetic poles

Answer 24

C. north and south geographical poles

Question 25

The least count of a vernier scale is
A. sum of the smallest divisions of main and vernier scales
B. value of one division of the primary scale divided by total
number of divisions of vernier scale
C. value of one division of vernier scale divided by total
number of divisions of primary scale
D. none of these

Answer 25

B. value of one division of the primary scale divided by total
number of divisions of vernier scale

Question 26

Which one of the following procedures for getting
accurate orientation is the most distinctive feature of the art
of plane tabling
A. radiation
B. intersection
C. traversing
D. resection

Answer 26

D. resection

Question 27

A clinometer is used for
A. measuring angle of slope
B. correcting line of collimation
C. setting out right angles
D. defining natural features

Answer 27

A. measuring angle of slope

Question 28

Diurnal variation of magnetic declination is
A. greater at equator than nearer the poles
B. less at equator than nearer the poles
C. less in summer than in winter
D. same at all latitudes and during different months

Answer 28

B. less at equator than nearer the poles

Question 29

The ‘fix’ of a plane table from three known points, is
good, if
A. middle station is nearest
B. middle station is farthest
C. either the right or left station is nearest
D. none of these

Answer 29

A. middle station is nearest

Question 30

The construction of optical square is based, on the
principle of optical
A. reflection
B. refraction
C. double refraction
D. double reflection

Answer 30

D. double reflection

Question 31

31. If the smallest division of a vernier is longer than the
    smallest division of its primary scale, the vernier is known as
    A. direct vernier
    B. double vernier
    C. retrograde vernier
    D. simple vernier

Answer 31

C. retrograde vernier

Question 32

Cross-staff is used for
A. setting out right angles
B. measuring contour gradient
C. taking levels
D. measuring distances
E. none of these

Answer 32

A. setting out right angles

Question 33

The ‘point of curve’ of a simple circular curve, is
A. point of tangency
B. point of commencement
C. point of intersection
D. mid-point of the curve

Answer 33

B. point of commencement

Question 34

For orientation of a plane table with three
points A, B and C, Bessel’s drill is
A. Align b through a and draw a ray towards c,
align a through b and draw a ray towards c, finally
align c through the point of intersection of the previously
drawn rays
B. Align c through a and draw a ray towards b,
align a through c and draw a ray towards b, finally
align b through the point of intersection of the previously
drawn rays
C. Align c through b and draw a ray towards a,
align b through c and draw a ray towards a, finally align a,
through the point of intersection of the previously, drawn
rays
D. In the first two steps any two of the points may be used
and a ray drawn towards the third point, which is sighted
through the point of intersection of previously drawn rays in
the final step

Answer 34

D. In the first two steps any two of the points may be used
and a ray drawn towards the third point, which is sighted
through the point of intersection of previously drawn rays in
the final step

Question 35

The minimum range for sliding the focusing lens in the
internal focusing telescope for focusing at all distances
beyond 4 m is
A. 5 mm
B. 10 mm
C. 15 mm
D. 20 mm

Answer 35

D. 20 mm

Question 36

Pick up the correct statement from the following :
A. in the earth’s magnetic field, a magnetic needle rests in
magnetic meridian
B. the angle between the true meridian and the magnetic
meridian is called magnetic variation
C. one end of the magnetic needle supported at its centre of
gravity tends to dip down towards the. nearer magnetic pole
of the earth
D. the magnet properly pivoted is balanced by means of
riding weight movable along the needle
E. all the above

Answer 36

E. all the above

Question 37

The formula for the horizontal distances for inclined
sights, on staff held normalis
(f/i) s cos θ + (f + d) cos θ ± h sin θ
A. minus sign is used for angle of depression
B. plus sign is used for angle of depression
C. minus sign is used for angle of elevation
D. none of these

Answer 37

A. minus sign is used for angle of depression

Question 38

Ramsden eye-piece consists of
A. two convex lenses short distance apart
B. two concave lenses short distance apart
C. one convex lens and one concave lens short distance
apart
D. two plano-convex lenses short distance apart, with the
convex surfaces facing each other

Answer 38

D. two plano-convex lenses short distance apart, with the
convex surfaces facing each other

Question 39

The distance between steps for measuring down hill to
obtain better accuracy
A. decreases with decrease of slope
B. increases with increase of slope
C. decreases with increase of slope
D. decreases with decrease of weight of the chain

Answer 39

C. decreases with increase of slope

Question 40

The tangent to the liquid surface in a level tube, is
parallel to the axis of the level tube at
A. every point of the bubble
B. either end of the bubble
C. the mid-point of the bubble
D. no where

Answer 40

the mid-point of the bubble

Question 41

If α is the angle between the polar ray and the tangent
at the point of commencement of a lemniscate curve, the
equation of the curve, is
A. l = ksin α
B. l = ksin 2α
C. l = ksin 3α
D. l = ktan 2α
E. l = kcos 2α

Answer 41

B. l = ksin 2α

Question 42

Pick up the correct statement from the following :
A. If the slope of the curve of a mass diagram in the
direction of increasing abscissa is downward, it indicates an
embankment
B. The vertical distance between a maximum ordinate and
the next forward maximum ordinate represents the whole
volume of the embankment
C. The vertical distance between a minimum ordinate and
the next forward maximum ordinate represents the whole
volume of a cutting
D. The area enclosed by a loop of the curve and balancing
line, measures the haul in that direction.
E. all the above

Answer 42

E. all the above

Question 43

Pick up the correct statement from the following :
A. if the image of the object does not fall on the plane of the
cross-lines, parallax exists
B. parallax has nothing to do with the eyepiece
C. the eyepiece is adjusted for clear vision of the cross hairs
D. all the above

Answer 43

D. all the above

Question 44

The slope correction may be ignored if
A. the slope of the ground is less than 3°
B. to slope of the ground is say 1 in 19
C. both (a) and (b)
D. neither (a) nor (b)

Answer 44

C. both (a) and (b)

Question 45

If Δ is the angle of deflection of the curve, T1 and T2 are
its points of tangencies, the angle between the tangent
at T1 and long chord T1 T2 will be
a. Δ/4
b. Δ/3
c. Δ/2
D. Δ
E. 2 Δ.

Answer 45

c. Δ/2

Question 46

If a tacheometer is fitted with an anal-latic lens
A. additive constant is 100, multiplying constant is zero
B. multiplying constant is 100, additive constant is zero
C. both multiplying and additive constants are 100
D. both multiplying and additive constants are 50

Answer 46

B. multiplying constant is 100, additive constant is zero

Question 47

Volume of the earth work may be calculated by
A. mean areas
B. end areas
C. Prismoidal formula
D. Trapezoidal
E. all the above

Answer 47

E. all the above

Question 48

Which one of the following mistakes/errors may be
cumulative + or - :
A. bad ranging
B. bad straightening
C. erroneous length of chain
D. sag

Answer 48

C. erroneous length of chain

Question 49

The orthographical projection of a traverse leg upon the
reference meridian, is known as
A. departure of leg
B. latitude to the leg
C. co-ordinate of the leg
D. bearing of the leg

Answer 49

B. latitude to the leg

Question 50

The whole circle bearing of a line is 290°. Its reduced
bearing is
A. N 20° E
B. N 20° W
C. N 70° W
D. S 70° E

Answer 50

C. N 70° W