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- Question
One of the Lehmann's rules of plane tabling, is
Options- 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.
- Correct Answer
- location of the instrument station is always distant from each of the three rays from the known points in proportion to their distances
- 1. One of the tacheometric constants is additive, the other constant, is
Options- A. subtractive constant
- B. multiplying constant
- C. dividing constant
- D. indicative constant. Discuss
- 2. Accuracy of 'fix' by two point problem, is
Options- A. bad
- B. good
- C. not reliable
- D. unique. Discuss
- 3. While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is
Options- A. correctly focussed
- B. not correctly focussed
- C. said to have parallax
- D. free from parallax. Discuss
- 4. If R is the radius of the main curve, ? the angle of deflection, S the shift and L the length of the transition curve, then, total tangent length of the curve, is
Options- A. (R - S) tan ?/2 - L/2
- B. (R + S) tan ?/2 - L/2
- C. (R + S) tan ?/2 + L/2
- D. (R - S) tan ?/2 + L/2
- E. (R - S) cos ?/2 + L/2 Discuss
- 5. If ? is the vertical angle of an inclined sight, ? is the angle of tilt of the staff, the error
Options- A.
- B.
- C.
- D. none of these. Discuss
- 6. Pick up the correct statement from the following :
Options- A. Box sextant is used for the measurement of horizontal angles
- B. Cross staff is used for setting out right angles
- C. Gradiometer is used for setting out any required gradient
- D. Line ranger is used for locating intermediate stations on a survey line
- E. All the above. Discuss
- 7. ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is 30°, the bearing of CD, is
Options- A. 90°
- B. 120°
- C. 210°
- D. 270° Discuss
- 8. The intercept of a staff
Options- A. is maximum if the staff is held truly normal to the line of sight.
- B. is minimum if the staff is held truly normal to the line of sight.
- C. decreases if the staff is tilted away from normal
- D. increases if the staff is tilted towards normal. Discuss
- 9. Closed contours of decreasing values towards their centre, represent
Options- A. a hill
- B. a depression
- C. a saddle or pass
- D. a river bed. Discuss
- 10. Hydrographic surveys deal with the mapping of
Options- A. large water bodies
- B. heavenly bodies
- C. mountaineous region
- D. canal system
- E. movement of clouds. Discuss
Surveying problems
Search Results
Correct Answer: multiplying constant
Correct Answer: not reliable
Correct Answer: said to have parallax
Correct Answer: (R + S) tan ?/2 + L/2
Correct Answer:
Correct Answer: All the above.
Correct Answer: 210°
Correct Answer: is minimum if the staff is held truly normal to the line of sight.
Correct Answer: a depression
Correct Answer: large water bodies
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