Surveying problems
- 1. The radius of curvature of the arc of the bubble tube is generally kept
Options- A. 10 m
- B. 25 m
- C. 50 m
- D. 100 m Discuss
Correct Answer: 100 m
- 2. If ? is the slope of the ground and l is the measured distance, the correction is
Options- A. 2l sin2 ?/2
- B. 2l cos2 ?/2
- C. 2l tan2 ?/2
- D. 2l cot2 ?/2. Discuss
Correct Answer: 2l sin2 ?/2
- 3. For true difference in elevations between two points A and B, the level must be set up
Options- A. at any point between A and B
- B. at the exact mid point of A and B
- C. near the point A
- D. near the point B. Discuss
Correct Answer: at the exact mid point of A and B
- 4. Pick up the correct statement from the following:
Options- 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. Discuss
Correct Answer: all the above.
- 5. If L is the perimeter of a closed traverse, ?D is the closing error in departure, the correction for the departure of a traverse side of length l, according to Bowditch rule, is
Options- A.
- B.
- C.
- D.
.
Discuss
Correct Answer:
. - 6. For a closed traverse the omitted measurements may be calculated
Options- A. length of one side only
- B. bearing of one side only
- C. both length and bearing of one side
- D. length or bearing of adjacent side
- E. all the above. Discuss
Correct Answer: all the above.
- 7. Pick up the correct statement from the following :
Options- A. the tangent screw enables to give small movement under conditions of smooth and positive control
- B. standing on the tripod is the levelling head or trib arch
- C. the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical
- D. all the above. Discuss
Correct Answer: all the above.
- 8. The sensitiveness of a level tube decreases if
Options- A. radius of curvature of its inner surface is increased
- B. diameter of the tube is increased
- C. length of the vapour bubble is increased
- D. both viscosity and surface tension are increased. Discuss
Correct Answer: both viscosity and surface tension are increased.
- 9. The limiting length of an offset does not depend upon
Options- A. accuracy of the work
- B. method of setting out perpendiculars
- C. scale of plotting
- D. indefinite features to be surveyed. Discuss
Correct Answer: indefinite features to be surveyed.
- 10. If f1 and f2 are the distances from the optical centre of a convex lens of focal length f to conjugate two points P1 and P2 respectively, the following relationship holds good
Options- A. f = f1 + f2
- B. f =
(f1 + f2) - C.
- D. none of these. Discuss
Correct Answer:
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