The instrument used for accurate centering in plane table survey is________________?

Related Mcqs:

1. 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)

2. The size of a plane table is________________?

   A. 750 mm x 900 mm
   B. 600 mm x 750 mm
   C. 450 mm x 600 mm
   D. 300 mm x 450 mm

3. Which of the following methods of plane table surveying is used to locate the position of an inaccessible point ?

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

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. For accurate work, the steel band should always be used in preference to chain because the steel band______________?

   A. is lighter than chain
   B. is easier to handle
   C. is practically inextensible and is not liable to kinks when in use
   D. can be easily repaired in the field

6. The angle of intersection of the two plane mirrors of an optical square is______________?

   A. 30°
   B. 45°
   C. 60°
   D. 90°

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

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

8. 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

9. Theodolite is an instrument used for_________________?

   A. tightening the capstan-headed nuts of level tube
   B. measurement of horizontal angles only
   C. measurement of vertical angles only
   D. measurement of both horizontal and vertical angles

10. Subtense bar is an instrument used for _______________?

    A. levelling
    B. measurement of horizontal distances in plane areas
    C. measurement of horizontal distances in undulated areas
    D. measurement of angles