A. backsight
B. intermediate sight
C. foresight
D. all of the above
Related Mcqs:
- Which of the following is not the function of levelling head ?
A. to support the main part of the instrument
B. to attach the theodolite to the tripod
C. to provide a means for leveling the theodolite
D. none of the above - The rise and fall method_______________?
A. is less.accurate than height of instrument method
B. is not suitable for levelling with tilting levels
C. provides a check on the reduction of intermediate point levels
D. quicker and less tedious for large number of intermediate sights - With the rise of temperature, the sensitivity of a bubble tube______________?
A. decreases
B. increases
C. remains unaffected
D. none of the above - Which of the following errors is not eliminated by the method of repetition of horizontal angle measurement ?
A. error due to eccentricity of verniers
B. error due to displacement of station signals
C. error due to wrong adjustment of line of collimation and trunnion axis
D. error due to inaccurate graduation - In direct method of contouring, the process of locating or identifying points lying on a contour is called_______________?
A. ranging
B. centring
C. horizontal control
D. vertical control - Direct method of contouring is_________________?
A. a quick method
B. adopted for large surveys only
C. most accurate method
D. suitable for hilly terrains - Intersection method of detailed plotting is most suitable for________________?
A. forests
B. urban areas
C. hilly areas
D. plains - 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) - The maximum tolerance in a 20 m chain is_______________?
A. ±2 mm
B. ±3 mm
C. ±5 mm
D. ±8 mm - Refraction correction________________?
A. completely eliminates curvature correction
B. partially eliminates curvature correction
C. adds to the curvature correction
D. has no effect on curvature correction
