The adjustment of horizontal cross hair is required particularly when the instrument is used for_____________?

Related Mcqs:

1. Cross staff is an instrument used for________________?

   A. measuring approximate horizontal angles
   B. setting out right angles
   C. measuring bearings of the lines
   D. none of the above

2. The number of horizontal cross wires in a stadia diaphragm is ________________?

   A. one
   B. two
   C. three
   D. four

3. In the cross-section method of indirect contouring, the spacing of cross-sections depends upon_____________?

   1. contour interval
   2. scale of plan
   3. characteristics of ground
   The correct answer is ?

   A. only (1)
   B. (1) and (2)
   C. (2) and (3)
   D. (1), (2) and (3)

4. 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

5. 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)

6. 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

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

   A. spirit level
   B. alidade
   C. plumbing fork
   D. trough compass

9. 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

10. 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