Surveying MCQs Set-3

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1. Indirect methods uses how many methods?

3

6

2

4

2. Theory of probability is applied to

both accidental and cumulative errors

cumulative errors only

none of these

accidental errors only

3. The main object of running a tie line is

to take details of nearby objects

none of these

to take offsets for detailed surveying

to check accuracy of work

4. How many methods of contouring are present?

3

4

5

2

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

Foot screws

Contour dams

Level vials

Contour maps

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

arbitrary benchmarks

GTS benchmarks

temporary benchmarks

permanent benchmarks

7. Contours can be found in a _________________ map.

Topographical

Physical

Political

Thematic

8. 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

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

U-shaped

V-shaped

S-shaped

L-shaped

10. A metallic tape is made of

linen

cloth and wires

invar

steel

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11. 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

64

16

10

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

cross staff

perpendicular offsets

oblique offsets

optical square

13. 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

6 chains

120 m

4 chains

180 m

14. 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

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

reiteration

by deflection angles

double precision

repetition

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

both of these

different

same

none of these

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

optical square

abney level

alidade

ceylon ghat tracer

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

Both of these

independent coordinates

consecutive coordinates

chords

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

C-curve

French curve

Inverted curve

Radial curve

20. Geodetic surveying is different from plane surveying because of

the large difference of elevations between various points

the curvature of the earth

undulations of the topography

coverage of very large area

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21. 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 from two transit stations

angles and distances from transit stations

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

metallic tape

steel tape

invar tape

chain

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

100

180

150

200

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

theodolite correction

transit rule

bowditch rule

Graphical method

25. Theodolite is an instrument used for measuring

(d) none of these

(b) vertical angle

(c) both (a) and (b)

(a) horizontal angle

26. The error due to bad ranging is

cumulative; negative

compensating

cumulative; positive

cumulative; positive or negative

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

true error

weighted observation

conditional error

residual error

28. '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

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

planimeter

clinometer

theodolite

graphometer

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

45°

30°

20°

60°

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

ranging

direct ranging

none of these

indirect ranging

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

both right swing and left swing

right and left faces

both verniers

different parts of main scale

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

Radiation method

Traversing method

Intersection method

Back scattering method

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

tachometric survey

circular curve ranging

geodetic survey

astronomical survey

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

260 sq km

1500 sq km

80 sq km

500 sq km

36. A contour line joins all the points having

equal elevation

equal vertical angles

similar reference points

zero elevation

37. An invar tape is made of an alloy of

nickel and steel

brass and steel

brass and nickel

copper and steel

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

all of these

tie line

check line

base line

39. 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°

less than 180°

more than 180° but not more than 225°

equal to 180°

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

Dam line

Ridge line

Watershed line

Catchment line

Surveying MCQs Set-3

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