Surveying MCQs Set-3

Page 1 of 4

1. A metallic tape is made of

steel

invar

linen

cloth and wires

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

none of these

ranging

direct ranging

indirect ranging

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

astronomical survey

tachometric survey

geodetic survey

circular curve ranging

4. The error due to bad ranging is

compensating

cumulative; negative

cumulative; positive

cumulative; positive or negative

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

transit rule

theodolite correction

Graphical method

bowditch rule

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

double precision

reiteration

repetition

by deflection angles

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

60°

30°

45°

20°

8. 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

arbitrary benchmarks

temporary benchmarks

GTS benchmarks

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

Direct method is expensive

Direct method is most accurate but is slow

Indirect method is relatively more expansive

Indirect method is less accurate but is faster

10. 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

Page 2 of 4

11. Contours can be found in a _________________ map.

Topographical

Physical

Political

Thematic

12. Geodetic surveying is different from plane surveying because of

coverage of very large area

the curvature of the earth

the large difference of elevations between various points

undulations of the topography

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

180 m

120 m

6 chains

4 chains

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

both verniers

different parts of main scale

right and left faces

both right swing and left swing

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

V-shaped

S-shaped

L-shaped

U-shaped

16. Indirect methods uses how many methods?

3

4

6

2

17. Theory of probability is applied to

cumulative errors only

accidental errors only

both accidental and cumulative errors

none of these

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

Foot screws

Level vials

Contour dams

Contour maps

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

residual error

weighted observation

true error

conditional error

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

theodolite

planimeter

clinometer

graphometer

Page 3 of 4

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

perpendicular offset

offset from chord produced

successive bisection of arcs

radial offset

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

Both of these

consecutive coordinates

chords

independent coordinates

23. 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

10

16

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

both of these

different

none of these

same

25. The main object of running a tie line is

to take details of nearby objects

to check accuracy of work

to take offsets for detailed surveying

none of these

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

80 sq km

500 sq km

260 sq km

1500 sq km

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

optical square

oblique offsets

cross staff

perpendicular offsets

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

Inverted curve

French curve

Radial curve

C-curve

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

Radiation method

Back scattering method

Intersection method

Traversing method

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

Ridge line

Dam line

Watershed line

Catchment line

Page 4 of 4

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

alidade

ceylon ghat tracer

optical square

abney level

32. How many methods of contouring are present?

2

5

3

4

33. A contour line joins all the points having

zero elevation

equal elevation

similar reference points

equal vertical angles

34. 'Offsets' are

chain lines which go out of alignment

short measurements from chain line

sets of minor instruments in chain surveying

ties or check lines which are perpendicular to chain line

35. Theodolite is an instrument used for measuring

(c) both (a) and (b)

(b) vertical angle

(d) none of these

(a) horizontal angle

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

steel tape

invar tape

chain

metallic tape

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

tie line

check line

all of these

base line

38. An invar tape is made of an alloy of

brass and nickel

copper and steel

brass and steel

nickel and steel

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°

equal to 180°

less than 180°

more than 180° but not more than 225°

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

100

200

180

150

Surveying MCQs Set-3

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