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

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 can be neutralised by setting the level midway between the two stations ?

   A. error due to curvature only
   B. error due to refraction only
   C. error due to both curvature and re-fraction
   D. none of the above

3. 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

4. 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)

5. If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is_________________?

   A. 99.345 m
   B. 100.345 m
   C. 100.655m
   D. 101.870m

6. 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

7. If the intercept on a vertical staff is ob-served as 0.75 m from a tacheometer, the horizontal distance between tacheometer and staff station is________________?

   A. 7.5 m
   B. 25 m
   C. 50
   D. 75 m

8. After fixing the plane table to the tripod, the main operations which are needed at each plane table station are ______________ ?

   1. levelling
   2. orientation
   3. centering
   The correct sequence of these operations is

   A. (1), (2),(3)
   B. (1), (3), (2)
   C. (3), (1), (2)
   D. (2), (3), (1)

9. Cross staff is an instrument used for________________?

   A. measuring approximate horizontal angles
   B. setting out right angles
   C. measuring bearings of the lines
   D. none of the above

10. If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to_________________?

    1. altitude bubble on index frame
    2. altitude bubble on index frame if it is to be used as a level
    3. altitude bubble on telescope
    4. altitude bubble on telescope if it is to be used as a level
    The correct answer is?

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