Discussion
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- Question
While measuring the distance between two points along upgrade with the help of a 20 m chain, the forward end of the chain is shifted forward through a distance
Options- A. 20 (sin ? - 1)
- B. 20 (cos ? - 1)
- C. 20 (sec ? - 1)
- D. 20 (cosec ? - 1).
- Correct Answer
- 20 (sec ? - 1)
- 1. The line of sight is kept as high above ground surface as possible to minimise the error in the observed angles due to
Options- A. shimmering
- B. horizontal refraction
- C. vertical refraction
- D. both shimmering and horizontal refraction. Discuss
- 2. To avoid large centering error with very short legs, observations are generally made
Options- A. to chain pins
- B. by using optical system for centering the theodolite
- C. to a target fixed on theodolite tripod on which theodolite may be fitted easily
- D. all the above. Discuss
- 3. Bergchrund is a topograhical feature in
Options- A. plains
- B. water bodies
- C. hills
- D. glaciated region Discuss
- 4. Prolongation of chain line across an obstruction in chain surveying, is done by
Options- A. making angular measurements
- B. drawing perpendiculars with a chain
- C. solution of triangles
- D. all the above. Discuss
- 5. Which one of the following statements is correct?
Options- A. when the axes of rotation of the graduated circle and the verniers are not coincident, the instrument possesses eccentricity
- B. the mean of the readings of the two verniers gives correct reading free from the eccentricity
- C. one vernier may be used if the readings of two verniers differ by a constant
- D. all the above. Discuss
- 6. If the whole circle bearing of a line is 180°, its reduced bearing is
Options- A. S 0° E
- B. S 0° W
- C. S
- D. N. Discuss
- 7. For indirect ranging, number of ranging rods required, is
Options- A. 1
- B. 2
- C. 3
- D. 4
- E. 5 Discuss
- 8. To orient a plane table at a point P roughly south of the mid-point of two inaccessible conical hill stations A and B in the plains, a point C is selected in line with AB and table is oriented at C by bringing ab in line with AB. A ray is then drawn towards P and at P the table is oriented by back ray method. The orientation so obtained, is
Options- A. unique and correct
- B. incorrect
- C. manifold and correct
- D. not reliable. Discuss
- 9. The ratio of the length of long chord and the tangent length of a circular curve of radius R deflecting through angle ?, is
Options- A. sin
- B. cos
- C. tan
- D. 2 sin
- E. 2 cos .
Discuss
- 10. During secular variation of magnetic meridian at different places
Options- A. range of oscillations is constant
- B. period of oscillation is constant
- C. range and period of oscillation both vary
- D. period of oscillation only varies. Discuss
Surveying problems
Search Results
Correct Answer: both shimmering and horizontal refraction.
Correct Answer: to a target fixed on theodolite tripod on which theodolite may be fitted easily
Correct Answer: water bodies
Correct Answer: drawing perpendiculars with a chain
Correct Answer: all the above.
Correct Answer: S
Correct Answer: 4
Correct Answer: manifold and correct
Correct Answer: 2 cos
. Correct Answer: range and period of oscillation both vary
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