MCQs / Q&A

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

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

A. error due to curvature only
B. error due to refraction only
C. error due to both curvature and re-fraction
D. none of the above

A. true R.L
B. more than true R.L
C. less than true R.L
D. none of the above

A. increasing the diameter of the tube
B. decreasing the length of bubble
C. increasing the viscosity of liquid
D. decreasing the radius of curvature of tube

A. completely eliminates curvature correction
B. partially eliminates curvature correction
C. adds to the curvature correction
D. has no effect on curvature correction

A. 98.70
B. 100.00
C. 102.30
D. 103.30

A. 99.345 m
B. 100.345 m
C. 100.655m
D. 101.870m

A. foresight only
B. backsight only
C. foresight and backsight
D. foresight and intermediate sight

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