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Focused topic practice

surveying MCQs

Practise focused surveying questions with marked answers for exam preparation and subject revision.

surveying Mcqs
1. The error due to eccentricity of inner and outer axes can be eliminated by________________?
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A. reading both verniers and taking the mean of the two

B. taking both face observations and taking the mean of the two

C. double sighting

D. taking mean of several readings distributed over different portions of the graduated circle

2. The graduations in prismatic compass_____________?
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A. correct answer is ?

B. (1) and (4)

C. (2) and (3)

D. (2) and (4)

E. (1) and (3)
F. /strong> are inverted
3. Size of a theodolite is specified by________________?
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A. the diameter of lower plate

B. the diameter of upper plate

C. the diameter of vertical circle

D. the length of telescope

4. Bowditch rule is applied to_________________?
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A. an open traverse for graphical adjustment

B. a closed traverse for adjustment of closing error

C. determine the effect of local attraction

D. none of the above

5. An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as__________________?
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A. horizontal equivalent

B. contour gradient

C. contour line

D. contour interval

6. Select the incorrect statement?
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A. The true meridian at any place is not variable

B. The true meridians at different places are parallel to each other

C. The maps prepared by national survey departments of any country are based on true meridians

D. The true meridians converge to a point in northern and southern hemispheres

7. If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant is_______________?
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A. 0.1

B. 1.33

C. 0.6

D. 0.4
8. The process of turning the telescope about the vertical axis in horizontal plane is known as______________?
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A. plunging

B. swinging

C. reversing

D. transiting

9. Which of the following errors is not eliminated by the method of repetition of horizontal angle measurement ?
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A. error due to displacement of station signals

B. error due to eccentricity of verniers

C. error due to inaccurate graduation

D. error due to wrong adjustment of line of collimation and trunnion axis

10. The methods used for locating the plane table stations are_______________?
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A. radiation

B. correct answer is

C. traversing

D. ntersection

E. resection

11. Which of the following errors cannot be eliminated by taking both face observations ?
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A. error due to horizontal axis not being perpendicular to the vertical axis

B. index error i.e. error due to imperfect adjustment of the vertical circle vernier

C. error due to non-parallelism of the axis of telescope level and line of collimation

D. none of the above
12. Direct method of contouring is_________________?
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A. adopted for large surveys only

B. a quick method

C. suitable for hilly terrains

D. most accurate method
13. For a line AB_______________?
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A. the forebearing of AB and back bearing of AB differ by 180

B. the forebearing of AB and back bearing of BA differ by 180

C. both (A. and (B. are correct.

D. none is correct

14. The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be_______________?
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A. closer to the lower station

B. as far as possible from the line AB

C. closer to the higher station

D. equidistant from A and B
15. Subtense bar is an instrument used for _______________?
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A. measurement of horizontal distances in undulated areas

B. levelling

C. measurement of angles

D. measurement of horizontal distances in plane areas

16. The difference between a level line and a horizontal line is that_______________?
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A. level line is a curved line while hori-zontal line is a straight line

B. level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line

C. horizontal line is normal to plumb line while level line may not be normal to the plumb line

D. both are same

17. If the true bearing of a line AB is 269 30?, then the azimuth of the line AB is_____________?
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A. 89 30?

B. 0 30?

C. 269 30?

D. 90 30?
18. The suitable contour interval for a map with scale 1 : 10000 is______________?
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A. 10 m

B. 2 m

C. 20 m

D. 5m

19. Dumpy level is most suitable when______________?
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A. fly levelling is being done over long distance

B. the instrument is to be shifted frequently

C. all of the above

D. many readings are to be taken from a single setting of the instrument
20. If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will_________________?
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A. increase

B. not change

C. decrease

D. either a or b

21. If the staff is not held vertical at a levelling station, the reduced level calculated from the observation would be_______________?
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A. none of the above

B. less than true R.L

C. more than true R.L

D. true R.L

22. If the length of a chain is found to be short on testing, it can be adjusted by______________?
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A. closing the joints of the rings if opened out

B. straightening the links

C. removing one or more small circular rings

D. all of the above

23. After fixing the plane table to the tripod, the main operations which are needed at each plane table station are ______________ ?
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A. correct sequence of these operations is

B. centering

C. orientation

D. levelling

24. The process of determining the locations of the instrument station by drawing re sectors from the locations of the known stations is called_________________?
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A. resection

B. traversing

C. radiation

D. intersection

25. Which of the following methods of offsets involves less measurement on the ground?
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A. method of oblique offsets

B. method of ties

C. method of perpendicular offsets

D. all involve equal measurement on the ground

26. The adjustment of horizontal cross hair is required particularly when the instrument is used for_____________?
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A. prolonging a straight line

B. all of the above

C. leveling

D. measurement of horizontal angles

27. For accurate work, the steel band should always be used in preference to chain because the steel band______________?
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A. can be easily repaired in the field

B. is practically inextensible and is not liable to kinks when in use

C. is lighter than chain

D. is easier to handle

28. The R.L, of the point A which is on the floor is 100 m and back sight reading on A is 2.455 m. If the foresight reading on the point B which is on the ceiling is 2.745 m, the R.L. of point B will be_______________?
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A. 94.80 m

B. 100.29 m

C. 99.71 m

D. 105.20 m
29. The two point problem and three point problem are methods of________________?
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A. resection and orientation

B. resection

C. traversing

D. orientation

30. In direct method of contouring, the process of locating or identifying points lying on a contour is called_______________?
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A. horizontal control

B. ranging

C. vertical control

D. centring

31. The prismatic compass and surveyors compass________________?
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A. give whole circle bearing (WCB. of a line and quadrantal bearing (QB. of a line respectively

B. both give QB of a line and WCB of a line

C. both give QB of a line

D. both give WCB of a line

32. If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167, the magnetic declination at that place is________________?
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A. 23 S

B. 13 W

C. 13 E

D. 77 N

33. Which of the following methods of plane table surveying is used to locate the position of an inaccessible point ?
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A. intersection

B. resection

C. radiation

D. traversing

34. Sensitiveness of a level tube is designated by______________?
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A. length of level tube

B. none of the above

C. length of bubble of level tube

D. radius of level tube
35. With the rise of temperature, the sensitivity of a bubble tube______________?
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A. none of the above

B. remains unaffected

C. decreases

D. increases

36. In the prismatic compass______________?
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A. the line of the sight does not move with the box

B. the magnetic needle and graduated circle do not move with the box

C. the magnetic needle moves with the box

D. the graduated circle is fixed to the box and the magnetic needle always remains in the N-S direction

37. Transit rule of adjusting the consecutive coordinates of a traverse is used where________________?
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A. linear measurements are more accurate than angular measurements

B. all of the above

C. angular measurements are more accurate than linear measurements

D. linear and angular measurements of the traverse are of equal accuracy

38. In the quadrantal bearing system, a whole circle bearing of 293 30? can be expressed as______________?
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A. N2330W

B. W2330N

C. S11330N

D. N6630W
39. Refraction correction________________?
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A. partially eliminates curvature correction

B. has no effect on curvature correction

C. adds to the curvature correction

D. completely eliminates curvature correction

40. A negative declination shows that the magnetic meridian is to the________________?
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A. western side of the true meridian

B. southern side of the true meridian

C. eastern side of the true meridian

D. none of the above

41. The correction for sag is_________________?
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A. always zero

B. sometimes additive and sometimes subtractive

C. always subtractive

D. always additive

42. The length of a chain is measured from_______________?
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A. centre of one handle to centre of other handle

B. outside of one handle to outside of other handle

C. outside of one handle to inside of other handle

D. inside of one handle to inside of other handle

43. If in a closed traverse, the sum of the north latitudes is more than the sum of the south latitudes and also the sum of west departures is more than the sum of the east departures, the bearing of the closing line is in the________________?
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A. SW quadrant

B. SE quadrant

C. NW quadrant

D. NE quadrant

44. Which of the following angles can be set out with the help of French cross staff?
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A. any angle

B. 45 only

C. either 45 or 90

D. 90 only

45. 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_____________?
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A. 180m

B. 4 chains

C. 120 m

D. 6 chains
46. Theodolite is an instrument used for_________________?
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A. tightening the capstan-headed nuts of level tube

B. measurement of horizontal angles only

C. measurement of vertical angles only

D. measurement of both horizontal and vertical angles
47. The permissible error in chaining for measurement with chain on rough or hilly ground is_____________?
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A. 1 in 1000

B. 1 in 250

C. 1 in 100

D. 1 in 500

48. As applied to staff readings, the corrections for curvature and refraction are respectively The above table shows a part of a level field book. The value of X should be________________?
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A. 102.3

B. 98.7

C. 100.00

D. 103.3

49. The angle between the prolongation of the preceding line and the forward line of a traverse is called ________________?
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A. direct angle

B. included angle

C. none of the above

D. deflection angle
50. Which of the following methods of con-touring is most suitable for a hilly terrain ?
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A. tacheometric method

B. direct method

C. cross-sections method

D. square method