Surveying MCQs Set-3

Page 1 of 4

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

chords

independent coordinates

Both of these

consecutive coordinates

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

Contour maps

Foot screws

Level vials

Contour dams

3. A metallic tape is made of

steel

cloth and wires

invar

linen

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

double precision

repetition

reiteration

by deflection angles

5. 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

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

invar tape

steel tape

metallic tape

chain

7. Geodetic surveying is different from plane surveying because of

the curvature of the earth

the large difference of elevations between various points

coverage of very large area

undulations of the topography

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

Radiation method

Back scattering method

Traversing method

Intersection method

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

true error

conditional error

weighted observation

residual error

10. 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

Page 2 of 4

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

different

same

none of these

both of these

12. 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

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

check line

tie line

all of these

base line

14. Indirect methods uses how many methods?

6

2

4

3

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

astronomical survey

circular curve ranging

tachometric survey

geodetic survey

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

U-shaped

S-shaped

V-shaped

L-shaped

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

C-curve

Inverted curve

French curve

Radial curve

18. The error due to bad ranging is

cumulative; positive

cumulative; negative

compensating

cumulative; positive or negative

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

Watershed line

Catchment line

Ridge line

Dam line

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

Indirect method is less accurate but is faster

Indirect method is relatively more expansive

Direct method is most accurate but is slow

Direct method is expensive

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

ranging

direct ranging

none of these

indirect ranging

22. 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

180 m

4 chains

120 m

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

optical square

cross staff

oblique offsets

perpendicular offsets

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

45°

20°

60°

30°

25. An invar tape is made of an alloy of

copper and steel

nickel and steel

brass and nickel

brass and steel

26. 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°

more than 180° but not more than 225°

equal to 180°

less than 180°

27. 'Offsets' are

short measurements from chain line

ties or check lines which are perpendicular to chain line

sets of minor instruments in chain surveying

chain lines which go out of alignment

28. Theodolite is an instrument used for measuring

(a) horizontal angle

(b) vertical angle

(c) both (a) and (b)

(d) none of these

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

theodolite

planimeter

graphometer

clinometer

30. 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

offset from chord produced

radial offset

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

angles and distances from transit stations

angles from two transit stations

angle from one transit station and distance from the other one

distances from two transit stations

32. 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

temporary benchmarks

GTS benchmarks

arbitrary benchmarks

33. A contour line joins all the points having

similar reference points

equal elevation

equal vertical angles

zero elevation

34. The main object of running a tie line is

to check accuracy of work

to take offsets for detailed surveying

none of these

to take details of nearby objects

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

80 sq km

1500 sq km

500 sq km

260 sq km

36. Theory of probability is applied to

none of these

both accidental and cumulative errors

cumulative errors only

accidental errors only

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

100

180

200

150

38. How many methods of contouring are present?

2

4

3

5

39. Contours can be found in a _________________ map.

Physical

Political

Thematic

Topographical

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

optical square

alidade

ceylon ghat tracer

abney level

Surveying MCQs Set-3

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