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

Related Mcqs:

1. 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

2. 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

3. If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to_______________?

   A. d
   B. 1/d
   C. d2
   D. 1/d2

4. As applied to staff readings, the corrections for curvature and refraction are respectively The above table shows a part of a level field book. The value of X should be________________?

   A. 98.70
   B. 100.00
   C. 102.30
   D. 103.30

5. The R.L, of the point A which is on the floor is 100 m and back sight reading on A is 2.455 m. If the foresight reading on the point B which is on the ceiling is 2.745 m, the R.L. of point B will be_______________?

   A. 94.80 m
   B. 99.71 m
   C. 100.29 m
   D. 105.20 m

6. 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

7. 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

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. The process of turning the telescope about the vertical axis in horizontal plane is known as______________?

   A. transiting
   B. reversing
   C. plunging
   D. swinging

10. If the reduced bearing of a line AB is N60°W and length is 100 m, then the latitude and departure respectively of the line AB will be________________?

    A. +50 m, +86.6 m
    B. +86.6 m, -50 m
    C. +50m, -86.6 m
    D. +70.7 m,-50 m