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Surveying - Interview Questions and Answers

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56. Which of the following statements is in-correct ?
A. Error due to refraction may not be completely eliminated by reciprocal levelling.
B. Tilting levels are commonly used for precision work.
C. The last reading of levelling is always a foresight.
D. All of the above statements are incorrect.
Explanation:
57. Sensitiveness of a level tube is designated by
A. radius of level tube
B. length of level tube
C. length of bubble of level tube
D. none of the above
Explanation:
58. 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
A. 98.70
B. 100.00
C. 102.30
D. 103.30
Explanation:
59. Normal tension is that pull which
A. is used at the time of standardising the tape
B. neutralizes the effect due to pull and sag
C. makes the correction due to sag equal to zero
D. makes the correction due to pull equal to zero
Explanation:
60. The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be
A. equidistant from A and B
B. closer to the higher station
C. closer to the lower station
D. as far as possible from the line AB
Explanation:
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