If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will_________________?

Related Mcqs:

1. 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

2. 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

3. 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)

4. The following sights are taken on a “turning point”________________?

   A. foresight only
   B. backsight only
   C. foresight and backsight
   D. foresight and intermediate sight

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

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

6. The suitable contour interval for a map with scale 1 : 10000 is______________?

   A. 2 m
   B. 5m
   C. 10 m
   D. 20 m

7. Contour interval is_______________?

   A. inversely proportional to the scale of the map
   B. directly proportional to the flatness of ground
   C. larger for accurate works
   D. larger if the time available is more

8. 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

9. 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

10. 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