Surveying MCQs Set-3

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

circular curve ranging

geodetic survey

tachometric survey

astronomical survey

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

graphometer

clinometer

theodolite

planimeter

3. Geodetic surveying is different from plane surveying because of

undulations of the topography

the curvature of the earth

the large difference of elevations between various points

coverage of very large area

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

1500 sq km

260 sq km

500 sq km

80 sq km

5. 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

6 chains

180 m

120 m

6. How many methods of contouring are present?

3

4

2

5

7. Contours can be found in a _________________ map.

Thematic

Physical

Political

Topographical

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

optical square

perpendicular offsets

oblique offsets

cross staff

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

none of these

indirect ranging

direct ranging

ranging

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

Direct method is expensive

Indirect method is relatively more expansive

Indirect method is less accurate but is faster

Direct method is most accurate but is slow

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11. An invar tape is made of an alloy of

copper and steel

nickel and steel

brass and nickel

brass and steel

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

ceylon ghat tracer

optical square

abney level

alidade

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

S-shaped

L-shaped

U-shaped

V-shaped

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

permanent benchmarks

arbitrary benchmarks

GTS benchmarks

temporary benchmarks

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

theodolite correction

bowditch rule

Graphical method

transit rule

16. Theodolite is an instrument used for measuring

(d) none of these

(c) both (a) and (b)

(b) vertical angle

(a) horizontal angle

17. 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

4

16

10

64

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

weighted observation

residual error

true error

conditional error

19. 'Offsets' are

ties or check lines which are perpendicular to chain line

sets of minor instruments in chain surveying

short measurements from chain line

chain lines which go out of alignment

20. Theory of probability is applied to

none of these

cumulative errors only

both accidental and cumulative errors

accidental errors only

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

Radiation method

Traversing method

Back scattering method

Intersection method

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

C-curve

French curve

Radial curve

Inverted curve

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

30°

20°

60°

45°

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

angles and distances from transit stations

angle from one transit station and distance from the other one

distances from two transit stations

angles from two transit stations

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

Both of these

chords

independent coordinates

consecutive coordinates

26. A contour line joins all the points having

equal vertical angles

equal elevation

similar reference points

zero elevation

27. A metallic tape is made of

cloth and wires

steel

invar

linen

28. 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

less than 180°

more than 180° but not more than 270°

more than 180° but not more than 225°

equal to 180°

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

metallic tape

chain

invar tape

steel tape

30. The main object of running a tie line is

to take offsets for detailed surveying

none of these

to check accuracy of work

to take details of nearby objects

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

same

different

none of these

both of these

32. Indirect methods uses how many methods?

3

2

4

6

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

perpendicular offset

offset from chord produced

successive bisection of arcs

radial offset

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

Contour maps

Foot screws

Level vials

Contour dams

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

double precision

reiteration

repetition

by deflection angles

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

both verniers

both right swing and left swing

right and left faces

different parts of main scale

37. The error due to bad ranging is

cumulative; negative

cumulative; positive

cumulative; positive or negative

compensating

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

all of these

check line

tie line

base line

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

Catchment line

Dam line

Watershed line

Ridge line

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

150

100

200

180

Surveying MCQs Set-3

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