Surveying MCQs Set-3

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

Radiation method

Back scattering method

Traversing method

Intersection method

2. Indirect methods uses how many methods?

2

3

6

4

3. The error due to bad ranging is

compensating

cumulative; positive

cumulative; positive or negative

cumulative; negative

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

metallic tape

steel tape

chain

invar tape

5. The main object of running a tie line is

to take offsets for detailed surveying

to check accuracy of work

to take details of nearby objects

none of these

6. A metallic tape is made of

invar

cloth and wires

linen

steel

7. 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

180 m

6 chains

4 chains

120 m

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

geodetic survey

circular curve ranging

astronomical survey

tachometric survey

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

180

100

200

150

10. A contour line joins all the points having

equal vertical angles

similar reference points

zero elevation

equal elevation

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

angles from two transit stations

distances from two transit stations

angle from one transit station and distance from the other one

angles and distances from transit stations

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

L-shaped

V-shaped

U-shaped

S-shaped

13. How many methods of contouring are present?

5

4

2

3

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

500 sq km

80 sq km

260 sq km

1500 sq km

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

clinometer

planimeter

theodolite

graphometer

16. An invar tape is made of an alloy of

brass and steel

copper and steel

brass and nickel

nickel and steel

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

optical square

cross staff

oblique offsets

perpendicular offsets

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

none of these

both of these

different

same

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

independent coordinates

chords

consecutive coordinates

Both of these

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

all of these

base line

tie line

check line

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21. 'Offsets' are

sets of minor instruments in chain surveying

short measurements from chain line

ties or check lines which are perpendicular to chain line

chain lines which go out of alignment

22. 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

10

16

64

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

double precision

repetition

reiteration

by deflection angles

24. Contours can be found in a _________________ map.

Physical

Topographical

Political

Thematic

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

60°

20°

45°

30°

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

indirect ranging

none of these

direct ranging

ranging

27. 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

equal to 180°

more than 180° but not more than 270°

more than 180° but not more than 225°

less than 180°

28. Theodolite is an instrument used for measuring

(d) none of these

(c) both (a) and (b)

(a) horizontal angle

(b) vertical angle

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

French curve

Inverted curve

Radial curve

C-curve

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

alidade

ceylon ghat tracer

abney level

optical square

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31. Theory of probability is applied to

none of these

cumulative errors only

accidental errors only

both accidental and cumulative errors

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

Watershed line

Catchment line

Ridge line

Dam line

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

temporary benchmarks

GTS benchmarks

arbitrary benchmarks

permanent benchmarks

34. 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

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

residual error

conditional error

weighted observation

true error

36. 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

Direct method is most accurate but is slow

Indirect method is less accurate but is faster

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

offset from chord produced

radial offset

successive bisection of arcs

perpendicular offset

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

both verniers

right and left faces

both right swing and left swing

different parts of main scale

39. Geodetic surveying is different from plane surveying because of

the large difference of elevations between various points

coverage of very large area

undulations of the topography

the curvature of the earth

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

Foot screws

Level vials

Contour dams

Contour maps

Surveying MCQs Set-3

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