Multiple Choice Questions on Civil Surveying - Set 25 - ObjectiveBooks

# Practice Test: Question Set - 25

(A) Embankment on the centre line
(B) Excavation on the centre line
(C) Earth work on the centre line
(D) None of these

2. The 'fix' of a plane table from three known points, is good, if
(A) Middle station is nearest
(B) Middle station is farthest
(C) Either the right or left station is nearest
(D) None of these

3. An angle of 45° with a chain line may be set out with
(A) Optical square
(B) Open cross staff
(C) French cross staff
(D) Prismatic square

4. One of the Lehmann's rules of plane tabling, is
(A) Location of the instrument station is always distant from each of the three rays from the known points in proportion to their distances
(B) When looking in the direction of each of the given points, the instrument station will be on the right side of one and left side of the other ray
(C) When the instrument station is outside the circumscribing circle its location is always on the opposite side of the ray to the most distant point as the inter-section of the other two rays
(D) None of these

5. Which one of the following mistakes/errors may be cumulative + or - :
(C) Erroneous length of chain
(D) Sag

6. Correction per chain length of 100 links along a slope having a rise of 1 unit in ‘n’ horizontal units, is
(A) 100/n2
(B) 100 n2
(C) 100/n3
(D) 100/n

7. Pick up the correct statement from the following:
(A) The theodolite in which telescope can be rotated in vertical plane is called a transmit
(B) When the vertical circle is to the left of the telescope during observation, it is called to be in left face
(C) When the vertical circle is to the right of the telescope during observation, it is called to be in right face
(D) All the above

8. Grid lines are parallel to
(A) Magnetic meridian of the central point of the grid
(B) Line representing the central true meridian of the grid
(C) Geographical equator
(D) None of these

9. Number of subdivisions per metre length of a levelling staff is
(A) 100
(B) 200
(C) 500
(D) 1000

10. The slope correction for a length of 30 m along a gradient of 1 in 20, is
(A) 3.75 cm
(B) 0.375 cm
(C) 37.5 cm
(D) 2.75 cm

11. From any point on the surface with a given inclination
(A) Only one contour gradient is possible
(B) Two contour gradients are possible
(C) Indefinite contour gradients are possible
(D) All of the above

12. In a precision traverse, included angles are measured by setting the vernier
(A) To read zero exactly on back station
(B) To read 5° exactly on back station
(C) Somewhere near zero and reading both verniers on back station
(D) All the above

13. A dumpy level was set up at the midpoint between two pegs A and B, 50 m apart and the staff readings at ‘A’ and ‘B’ were 1.22 and 1.06. With the level set up at ‘A’, the readings at ‘A’ and ‘B’ were 1.55 and 1.37. The collimation error per 100 m length of sight is
(A) 0.02 m inclined upwards
(B) 0.04 m inclined downwards
(C) 0.04 m inclined upward
(D) None of these

14. The zero of the graduated circle of a prismatic compass is located at
(A) North end
(B) East end
(C) South end
(D) West end

15. Horizontal distances obtained tacheometerically are corrected for
(A) Slope correction
(B) Temperature correction
(C) Refraction and curvature correction
(D) All the above

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