Surveying MCQs Set-3

Page 1 of 4

1. A contour interval is the __________________ for all purposes.

different

same

both of these

none of these

2. Which of the following is not a method used for plane table surveying?

Traversing method

Radiation method

Intersection method

Back scattering method

3. Which one of the following linear methods of setting out a circular curve needs reference of the centre of the curve?

successive bisection of arcs

perpendicular offset

radial offset

offset from chord produced

4. In a transit theodolite, error due to eccentricity of verniers is eliminated by reading

different parts of main scale

right and left faces

both verniers

both right swing and left swing

5. The curvature of the Earth's surface is taken into account only if the extent of survey is more than

260 sq km

80 sq km

500 sq km

1500 sq km

6. An invar tape is made of an alloy of

copper and steel

brass and nickel

nickel and steel

brass and steel

7. The position of a point can be fixed more accurately by

perpendicular offsets

optical square

cross staff

oblique offsets

8. For setting out right angles, the instrument used is

optical square

abney level

alidade

ceylon ghat tracer

9. Which of the following is not true for the direct and indirect methods of contouring?

Indirect method is relatively more expansive

Direct method is most accurate but is slow

Indirect method is less accurate but is faster

Direct method is expensive

10. In case of angular measurements being more precise than the linear measurements, the traverse can be balanced by

bowditch rule

Graphical method

transit rule

theodolite correction

Page 2 of 4

11. The process of marking intermediate points on a survey line is known as

direct ranging

indirect ranging

ranging

none of these

12. Which of the following instruments is generally used for base line measurements?

steel tape

invar tape

metallic tape

chain

13. A metallic tape is made of

cloth and wires

invar

steel

linen

14. The sum of the three interior angles of a triangle, the vertices of which lie on the surface of the earth, covering a vast area of several hundreds of km² is

more than 180° but not more than 225°

more than 180° but not more than 270°

less than 180°

equal to 180°

15. If the probable error in single observation is ±0.04 m and that of the mean is ±0.01 m, then the number of observations are

64

16

4

10

16. A contour line joins all the points having

equal vertical angles

zero elevation

equal elevation

similar reference points

17. Contours can be found in a _________________ map.

Topographical

Political

Physical

Thematic

18. The line which separates the catchment basin from the rest of the area is

Watershed line

Dam line

Catchment line

Ridge line

19. The difference between the most probable value of a quantity and its observed value is

residual error

conditional error

weighted observation

true error

20. The gale method of traversing consists of plotting the points by

chords

consecutive coordinates

independent coordinates

Both of these

Page 3 of 4

21. Theory of probability is applied to

both accidental and cumulative errors

none of these

cumulative errors only

accidental errors only

22. The error due to bad ranging is

cumulative; negative

cumulative; positive or negative

cumulative; positive

compensating

23. During chaining along a straight line, the leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is

4 chains

120 m

180 m

6 chains

24. The reference points on which a day's work is closed and from where levelling is continued the next day are called as

GTS benchmarks

arbitrary benchmarks

temporary benchmarks

permanent benchmarks

25. The curves used for drawing lines between points in a contour line is

C-curve

Inverted curve

French curve

Radial curve

26. The longest chain line passing through the centre of the area is known as

check line

base line

all of these

tie line

27. For locating a distance object visible from two transit stations, the method usually preferred is

distances from two transit stations

angles and distances from transit stations

angle from one transit station and distance from the other one

angles from two transit stations

28. How many methods of contouring are present?

4

2

3

5

29. Theodolite is an instrument used for measuring

(b) vertical angle

(c) both (a) and (b)

(a) horizontal angle

(d) none of these

30. The main object of running a tie line is

none of these

to take offsets for detailed surveying

to take details of nearby objects

to check accuracy of work

Page 4 of 4

31. ____________________ are not mandatory in civil engineering projects like road works, dams, canals, etc.

Level vials

Contour dams

Foot screws

Contour maps

32. A triangle is said to be well conditioned if none of its angles is less than

30°

20°

45°

60°

33. 'Offsets' are

short measurements from chain line

sets of minor instruments in chain surveying

chain lines which go out of alignment

ties or check lines which are perpendicular to chain line

34. Number of links in a 30m metric chain is

200

180

150

100

35. Which shaped lines indicate the presence of a ridge?

U-shaped

V-shaped

S-shaped

L-shaped

36. Indirect methods uses how many methods?

4

3

2

6

37. The instrument, which is used to measure area upon contour map is

theodolite

clinometer

graphometer

planimeter

38. Which one of the following is carried out by two theodolite method?

tachometric survey

circular curve ranging

astronomical survey

geodetic survey

39. Geodetic surveying is different from plane surveying because of

undulations of the topography

the large difference of elevations between various points

the curvature of the earth

coverage of very large area

40. To observe the included angle accurately, method preferred is

repetition

double precision

by deflection angles

reiteration

Surveying MCQs Set-3

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