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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

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