A. one
B. two
C. three
D. four
Related Mcqs:
- The adjustment of horizontal cross hair is required particularly when the instrument is used for_____________?
A. leveling
B. prolonging a straight line
C. measurement of horizontal angles
D. all of the above - 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 horizontal angle between the true meridian and magnetic meridian at a place is called______________?
A. azimuth
B. declination
C. local attraction
D. magnetic bearing - The process of turning the telescope about the vertical axis in horizontal plane is known as______________?
A. transiting
B. reversing
C. plunging
D. swinging - 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 - The difference between a level line and a horizontal line is that_______________?
A. level line is a curved line while hori-zontal line is a straight line
B. level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line
C. horizontal line is normal to plumb line while level line may not be normal to the plumb line
D. both are same - If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to_______________?
A. d
B. 1/d
C. d2
D. 1/d2 - 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 - Horizontal distances obtained by thermometric observations_________________?
A. require slope correction
B. require tension correction
C. require slope and tension corrections
D. do not require slope and tension corrections - 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
