71. Different grades are joined together by a ________________?
A. compound curve
B. transition curve
C. reverse curve
D. vertical curve
✅ The correct answer is option D.
Surveying MCQs
72. 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
✅ The correct answer is option D.
73. Which of the following methods of con-touring is most suitable for a hilly terrain ?
A. direct method
B. square method
C. cross-sections method
D. tacheometric method
✅ The correct answer is option D.
74. 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
✅ The correct answer is option D.
75. The process of turning the telescope about the vertical axis in horizontal plane is known as______________?
A. transiting
B. reversing
C. plunging
D. swinging
✅ The correct answer is option D.
76. The rise and fall method of levelling provides a complete check on_______________?
A. backsight
B. intermediate sight
C. foresight
D. all of the above
✅ The correct answer is option D.
77. 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
✅ The correct answer is option D.
78. Benchmark is established by________________?
A. hypsometry
B. barometric levelling
C. spirit levelling
D. trigonometrical levelling
✅ The correct answer is option C.
79. Which of the following errors can be eliminated by taking mean of bot face observations ?
A. error due to imperfect graduations
B. error due to eccentricity of verniers
C. error due to imperfect adjustment of plate levels
D. error due to line of collimation not being perpendicular to horizontal axis
✅ The correct answer is option D.
80. Direct method of contouring is_________________?
A. a quick method
B. adopted for large surveys only
C. most accurate method
D. suitable for hilly terrains
✅ The correct answer is option C.