Category: Surveying

A. 2 m
B. 5m
C. 10 m
D. 20 m

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

A. reading both verniers and taking the mean of the two
B. taking both face observations and taking the mean of the two
C. double sighting
D. taking mean of several readings distributed over different portions of the graduated circle

A. measuring angle and distance from one transit station
B. measuring angles to the point from at least two stations
C. measuring angle at one station and distance from other
D. measuring distance from two points on traverse line

A. forests
B. urban areas
C. hilly areas
D. plains

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

A. ranging
B. centring
C. horizontal control
D. vertical control

A. an open traverse for graphical adjustment
B. a closed traverse for adjustment of closing error
C. determine the effect of local attraction
D. none of the above

A. the forebearing of AB and back bearing of AB differ by 180°
B. the forebearing of AB and back bearing of BA differ by 180°
C. both (A. and (B. are correct.
D. none is correct

A. deflection angle
B. included angle
C. direct angle
D. none of the above