Surveying MCQs Set-3

Page 1 of 4

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

circular curve ranging

astronomical survey

geodetic survey

tachometric survey

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

S-shaped

V-shaped

L-shaped

U-shaped

3. A metallic tape is made of

cloth and wires

steel

invar

linen

4. The error due to bad ranging is

compensating

cumulative; positive

cumulative; negative

cumulative; positive or negative

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

direct ranging

ranging

indirect ranging

none of these

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

GTS benchmarks

arbitrary benchmarks

temporary benchmarks

permanent benchmarks

7. How many methods of contouring are present?

2

5

4

3

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

Contour dams

Level vials

Foot screws

Contour maps

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

weighted observation

conditional error

residual error

true error

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

1500 sq km

260 sq km

80 sq km

500 sq km

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

both right swing and left swing

different parts of main scale

right and left faces

both verniers

12. 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 225°

more than 180° but not more than 270°

equal to 180°

less than 180°

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

reiteration

by deflection angles

repetition

double precision

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

Traversing method

Back scattering method

Radiation method

Intersection method

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

bowditch rule

Graphical method

transit rule

theodolite correction

16. A contour line joins all the points having

similar reference points

equal elevation

equal vertical angles

zero elevation

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

angles and distances from transit stations

angle from one transit station and distance from the other one

angles from two transit stations

distances from two transit stations

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

metallic tape

invar tape

steel tape

chain

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

radial offset

perpendicular offset

offset from chord produced

successive bisection of arcs

20. 'Offsets' are

chain lines which go out of alignment

short measurements from chain line

ties or check lines which are perpendicular to chain line

sets of minor instruments in chain surveying

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21. 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

120 m

4 chains

180 m

6 chains

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

both of these

none of these

same

different

23. Indirect methods uses how many methods?

6

2

3

4

24. Theodolite is an instrument used for measuring

(d) none of these

(c) both (a) and (b)

(a) horizontal angle

(b) vertical angle

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

perpendicular offsets

cross staff

optical square

oblique offsets

26. An invar tape is made of an alloy of

brass and nickel

nickel and steel

brass and steel

copper and steel

27. 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

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

optical square

ceylon ghat tracer

abney level

alidade

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

45°

30°

60°

20°

30. Theory of probability is applied to

both accidental and cumulative errors

cumulative errors only

accidental errors only

none of these

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31. Contours can be found in a _________________ map.

Physical

Topographical

Political

Thematic

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

tie line

check line

all of these

base line

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

Direct method is most accurate but is slow

Indirect method is less accurate but is faster

Direct method is expensive

Indirect method is relatively more expansive

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

Dam line

Catchment line

Ridge line

Watershed line

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

consecutive coordinates

Both of these

chords

independent coordinates

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

150

200

100

180

37. Geodetic surveying is different from plane surveying because of

undulations of the topography

coverage of very large area

the large difference of elevations between various points

the curvature of the earth

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

graphometer

clinometer

planimeter

theodolite

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

Radial curve

C-curve

French curve

Inverted curve

40. The main object of running a tie line is

to take details of nearby objects

to take offsets for detailed surveying

none of these

to check accuracy of work

Surveying MCQs Set-3

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