Which of the following errors can be neutralised by setting the level midway between the two stations ?

Related Mcqs:

1. 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

2. Which of the following errors cannot be eliminated by taking both face observations ?

   A. error due to horizontal axis not being perpendicular to the vertical axis
   B. index error i.e. error due to imperfect adjustment of the vertical circle vernier
   C. error due to non-parallelism of the axis of telescope level and line of collimation
   D. none of the above

3. Which of the following errors is not eliminated by the method of repetition of horizontal angle measurement ?

   A. error due to eccentricity of verniers
   B. error due to displacement of station signals
   C. error due to wrong adjustment of line of collimation and trunnion axis
   D. error due to inaccurate graduation

4. Which of the following errors can be eliminated by taking mean of bot face observations ?

   A. error due to imperfect graduations
   B. error due to eccentricity of verniers
   C. error due to imperfect adjustment of plate levels
   D. error due to line of collimation not being perpendicular to horizontal axis

5. Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations ?

   A. measuring angle and distance from one transit station
   B. measuring angles to the point from at least two stations
   C. measuring angle at one station and distance from other
   D. measuring distance from two points on traverse line

6. The process of determining the locations of the instrument station by drawing re sectors from the locations of the known stations is called_________________?

   A. radiation
   B. intersection
   C. resection
   D. traversing

7. The methods used for locating the plane table stations are_______________?

   1. radiation
   2. traversing
   3.intersection
   4. resection
   The correct answer is

   A. (1) and (2)
   B. (3) and (4)
   C. (2) and (4)
   D. (1) and (3)

8. If the staff is not held vertical at a level¬ling station, the reduced level calculated from the observation would be_______________?

   A. true R.L
   B. more than true R.L
   C. less than true R.L
   D. none of the above

9. The difference between a level line and a horizontal line is that_______________?

   A. level line is a curved line while hori-zontal line is a straight line
   B. level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line
   C. horizontal line is normal to plumb line while level line may not be normal to the plumb line
   D. both are same

10. Dumpy level is most suitable when______________?

    A. the instrument is to be shifted frequently
    B. fly levelling is being done over long distance
    C. many readings are to be taken from a single setting of the instrument
    D. all of the above