The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be_______________?

Related Mcqs:

1. 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

2. 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

3. 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

4. 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

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 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)

7. 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

8. 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

9. 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)

10. 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