Civil Engineering : Surveying QUESTIONS AND ANSWERS :: part3 : 6 to 10
Following Civil Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.Select the correct statement. |
| A contour is not necessarily a closed curve. |
| A contour represents a ridge line if the concave side of lower value con�tour lies towards the higher value contour. |
| Two contours of different elevations do not cross each other except in case of an overhanging cliff. |
| All of the above statements are correct. |
7.Which of the following statements is in-correct ? |
| Error due to refraction may not be completely eliminated by reciprocal levelling. |
| Tilting levels are commonly used for precision work. |
| The last reading of levelling is always a foresight. |
| All of the above statements are incorrect. |
8.Sensitiveness of a level tube is designated by |
| radius of level tube |
| length of level tube |
| length of bubble of level tube |
| none of the above |
9.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 |
| 98.70 |
| 100.00 |
| 102.30 |
| 103.30 |
10.The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be |
| equidistant from A and B |
| closer to the higher station |
| closer to the lower station |
| as far as possible from the line AB |
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