Surveying MCQs Set-3

Page 1 of 4

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

astronomical survey

tachometric survey

geodetic survey

circular curve ranging

2. Theory of probability is applied to

accidental errors only

both accidental and cumulative errors

cumulative errors only

none of these

3. A contour line joins all the points having

zero elevation

equal elevation

equal vertical angles

similar reference points

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

500 sq km

260 sq km

1500 sq km

80 sq km

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

C-curve

French curve

Radial curve

Inverted curve

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

transit rule

theodolite correction

Graphical method

bowditch rule

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

clinometer

graphometer

planimeter

theodolite

8. An invar tape is made of an alloy of

copper and steel

brass and steel

nickel and steel

brass and nickel

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

Direct method is expensive

Direct method is most accurate but is slow

Indirect method is less accurate but is faster

Indirect method is relatively more expansive

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

Foot screws

Level vials

Contour dams

Contour maps

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11. 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

perpendicular offset

successive bisection of arcs

radial offset

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

angle from one transit station and distance from the other one

distances from two transit stations

angles and distances from transit stations

angles from two transit stations

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

tie line

check line

base line

all of these

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

by deflection angles

double precision

repetition

reiteration

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

Dam line

Catchment line

Ridge line

Watershed line

16. 'Offsets' are

sets of minor instruments in chain surveying

chain lines which go out of alignment

ties or check lines which are perpendicular to chain line

short measurements from chain line

17. Contours can be found in a _________________ map.

Physical

Topographical

Thematic

Political

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

20°

45°

30°

60°

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

optical square

cross staff

perpendicular offsets

oblique offsets

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

S-shaped

V-shaped

U-shaped

L-shaped

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21. The error due to bad ranging is

compensating

cumulative; positive or negative

cumulative; negative

cumulative; positive

22. 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

23. 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

10

4

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

Traversing method

Radiation method

Intersection method

Back scattering method

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

invar tape

metallic tape

chain

steel tape

26. 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

120 m

4 chains

27. The main object of running a tie line is

to check accuracy of work

to take details of nearby objects

to take offsets for detailed surveying

none of these

28. Indirect methods uses how many methods?

3

4

6

2

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

alidade

ceylon ghat tracer

optical square

abney level

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

same

different

both of these

none of these

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

residual error

true error

weighted observation

conditional error

32. How many methods of contouring are present?

4

5

3

2

33. A metallic tape is made of

steel

linen

cloth and wires

invar

34. 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 225°

less than 180°

more than 180° but not more than 270°

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

direct ranging

none of these

ranging

indirect ranging

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

chords

Both of these

independent coordinates

consecutive coordinates

37. Theodolite is an instrument used for measuring

(c) both (a) and (b)

(b) vertical angle

(a) horizontal angle

(d) none of these

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

100

150

200

180

39. Geodetic surveying is different from plane surveying because of

coverage of very large area

the curvature of the earth

undulations of the topography

the large difference of elevations between various points

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

right and left faces

both verniers

both right swing and left swing

different parts of main scale

Surveying MCQs Set-3

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