Surveying MCQs Set-3

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1. 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

permanent benchmarks

arbitrary benchmarks

GTS benchmarks

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

Direct method is expensive

Indirect method is relatively more expansive

Indirect method is less accurate but is faster

Direct method is most accurate but is slow

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

invar tape

metallic tape

steel tape

chain

4. Theodolite is an instrument used for measuring

(d) none of these

(b) vertical angle

(c) both (a) and (b)

(a) horizontal angle

5. An invar tape is made of an alloy of

brass and steel

brass and nickel

nickel and steel

copper and steel

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

60°

45°

20°

30°

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

150

200

100

180

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

circular curve ranging

tachometric survey

geodetic survey

astronomical survey

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

chords

consecutive coordinates

independent coordinates

Both of these

10. A contour line joins all the points having

zero elevation

equal elevation

equal vertical angles

similar reference points

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11. 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

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

distances from two transit stations

angles and distances from transit stations

angle from one transit station and distance from the other one

angles from two transit stations

13. Theory of probability is applied to

both accidental and cumulative errors

none of these

cumulative errors only

accidental errors only

14. A metallic tape is made of

steel

invar

linen

cloth and wires

15. Indirect methods uses how many methods?

3

4

6

2

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

Dam line

Catchment line

Ridge line

Watershed line

17. How many methods of contouring are present?

5

3

2

4

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

true error

weighted observation

residual error

conditional error

19. 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

64

4

16

10

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

double precision

reiteration

repetition

by deflection angles

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

French curve

Radial curve

C-curve

Inverted curve

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

same

different

none of these

both of these

23. 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

260 sq km

500 sq km

24. 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

180 m

6 chains

120 m

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

Intersection method

Radiation method

Traversing method

Back scattering method

26. Contours can be found in a _________________ map.

Physical

Thematic

Topographical

Political

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

indirect ranging

none of these

ranging

direct ranging

28. 'Offsets' are

ties or check lines which are perpendicular to chain line

chain lines which go out of alignment

sets of minor instruments in chain surveying

short measurements from chain line

29. 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

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

perpendicular offsets

optical square

oblique offsets

cross staff

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

both verniers

both right swing and left swing

different parts of main scale

right and left faces

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

tie line

all of these

base line

check line

33. Geodetic surveying is different from plane surveying because of

the curvature of the earth

undulations of the topography

the large difference of elevations between various points

coverage of very large area

34. The error due to bad ranging is

cumulative; positive or negative

cumulative; negative

cumulative; positive

compensating

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

optical square

alidade

abney level

ceylon ghat tracer

36. The main object of running a tie line is

to take offsets for detailed surveying

to take details of nearby objects

to check accuracy of work

none of these

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

S-shaped

L-shaped

U-shaped

V-shaped

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

Level vials

Contour maps

Foot screws

Contour dams

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

graphometer

theodolite

clinometer

planimeter

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 270°

less than 180°

equal to 180°

more than 180° but not more than 225°

Surveying MCQs Set-3

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