Surveying MCQs Set-3

Page 1 of 4

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

C-curve

French curve

Inverted curve

Radial curve

2. Contours can be found in a _________________ map.

Physical

Topographical

Political

Thematic

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

right and left faces

different parts of main scale

both verniers

both right swing and left swing

4. How many methods of contouring are present?

3

4

5

2

5. 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

arbitrary benchmarks

permanent benchmarks

GTS benchmarks

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

Contour maps

Foot screws

Level vials

Contour dams

7. The main object of running a tie line is

to take offsets for detailed surveying

to take details of nearby objects

none of these

to check accuracy of work

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

S-shaped

L-shaped

V-shaped

U-shaped

9. 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 from two transit stations

distances from two transit stations

angles and distances from transit stations

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

oblique offsets

optical square

cross staff

perpendicular offsets

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11. 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 relatively more expansive

Direct method is expensive

Indirect method is less accurate but is faster

12. 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

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

base line

check line

tie line

all of these

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

both of these

same

different

none of these

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

ranging

direct ranging

none of these

indirect ranging

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

260 sq km

80 sq km

500 sq km

1500 sq km

18. 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

19. The error due to bad ranging is

compensating

cumulative; negative

cumulative; positive or negative

cumulative; positive

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

transit rule

bowditch rule

theodolite correction

Graphical method

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21. Geodetic surveying is different from plane surveying because of

the curvature of the earth

coverage of very large area

the large difference of elevations between various points

undulations of the topography

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

45°

60°

20°

30°

23. Theodolite is an instrument used for measuring

(c) both (a) and (b)

(d) none of these

(b) vertical angle

(a) horizontal angle

24. Indirect methods uses how many methods?

2

3

4

6

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

Back scattering method

Radiation method

Traversing method

Intersection method

26. A metallic tape is made of

invar

linen

steel

cloth and wires

27. A contour line joins all the points having

equal vertical angles

zero elevation

similar reference points

equal elevation

28. 'Offsets' are

short measurements from chain line

sets of minor instruments in chain surveying

chain lines which go out of alignment

ties or check lines which are perpendicular to chain line

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

Both of these

independent coordinates

consecutive coordinates

chords

30. Theory of probability is applied to

accidental errors only

none of these

both accidental and cumulative errors

cumulative errors only

Page 4 of 4

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

circular curve ranging

astronomical survey

geodetic survey

tachometric survey

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

Catchment line

Ridge line

Dam line

Watershed line

33. An invar tape is made of an alloy of

brass and steel

nickel and steel

copper and steel

brass and nickel

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

planimeter

graphometer

theodolite

clinometer

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

optical square

ceylon ghat tracer

alidade

abney level

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

180

200

100

150

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

weighted observation

true error

conditional error

residual error

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

chain

metallic tape

invar tape

steel tape

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

double precision

reiteration

by deflection angles

repetition

40. 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°

Surveying MCQs Set-3

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