Surveying MCQs Set-3

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1. How many methods of contouring are present?

5

2

3

4

2. 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

angles and distances from transit stations

distances from two transit stations

angles from two transit stations

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

Back scattering method

Radiation method

Intersection method

Traversing method

4. A metallic tape is made of

cloth and wires

steel

linen

invar

5. The error due to bad ranging is

cumulative; negative

compensating

cumulative; positive

cumulative; positive or negative

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

clinometer

planimeter

theodolite

graphometer

7. 'Offsets' are

short measurements from chain line

sets of minor instruments in chain surveying

ties or check lines which are perpendicular to chain line

chain lines which go out of alignment

8. Contours can be found in a _________________ map.

Thematic

Physical

Topographical

Political

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

all of these

check line

base line

tie line

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

150

100

200

180

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11. 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 270°

equal to 180°

less than 180°

more than 180° but not more than 225°

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

true error

conditional error

weighted observation

residual error

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

C-curve

Radial curve

French curve

Inverted curve

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

80 sq km

500 sq km

260 sq km

1500 sq km

15. Theory of probability is applied to

accidental errors only

none of these

cumulative errors only

both accidental and cumulative errors

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

Ridge line

Watershed line

Dam line

Catchment line

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

Contour dams

Level vials

Foot screws

Contour maps

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

perpendicular offset

successive bisection of arcs

radial offset

offset from chord produced

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

ranging

none of these

direct ranging

indirect ranging

20. Indirect methods uses how many methods?

3

6

4

2

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21. An invar tape is made of an alloy of

brass and steel

copper and steel

nickel and steel

brass and nickel

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

circular curve ranging

tachometric survey

geodetic survey

astronomical survey

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

Direct method is expensive

Indirect method is less accurate but is faster

Direct method is most accurate but is slow

Indirect method is relatively more expansive

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

Both of these

consecutive coordinates

independent coordinates

chords

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

oblique offsets

optical square

perpendicular offsets

cross staff

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

chain

metallic tape

steel tape

invar tape

27. The main object of running a tie line is

none of these

to take details of nearby objects

to take offsets for detailed surveying

to check accuracy of work

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

ceylon ghat tracer

alidade

optical square

abney level

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

V-shaped

U-shaped

S-shaped

L-shaped

30. 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

permanent benchmarks

arbitrary benchmarks

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31. Geodetic surveying is different from plane surveying because of

the large difference of elevations between various points

coverage of very large area

the curvature of the earth

undulations of the topography

32. Theodolite is an instrument used for measuring

(a) horizontal angle

(b) vertical angle

(c) both (a) and (b)

(d) none of these

33. 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

16

4

64

10

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

by deflection angles

double precision

reiteration

repetition

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

different

none of these

both of these

same

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

20°

45°

60°

30°

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

both right swing and left swing

both verniers

different parts of main scale

right and left faces

38. A contour line joins all the points having

equal elevation

similar reference points

zero elevation

equal vertical angles

39. 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

40. 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

Surveying MCQs Set-3

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