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

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. 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

3. 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_________________?

   A. increase
   B. decrease
   C. not change
   D. either ‘a’ or ‘b’

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. A telescope is said to be inverted if its______________?

   A. vertical circle is to its right and the bubble of the telescope is down
   B. vertical circle is to its right and the bubble of the telescope is up
   C. vertical circle is to its left and the bubble of the telescope is down
   D. vertical circle is to its left and the bubble of the telescope is up

6. The cross hairs in the surveying telescope are placed_____________?

   A. midway between eye piece and objec¬tive lens
   B. much closer to the eye-piece than to the objective lens
   C. much closer to the objective lens than to the eye piece
   D. anywhere between eye-piece and objective lens

7. In an internal focussing type of telescope, the lens provided is_______________?

   A. concave
   B. convex
   C. plano-convex
   D. plano-concave

8. 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)

9. An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as__________________?

   A. contour line
   B. horizontal equivalent
   C. contour interval
   D. contour gradient

10. If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant is_______________?

    A. 0.1
    B. 0.4
    C. 0.6
    D. 1.33