Surveying
Pick up the correct statement for horizontal photographs.

The two sides of a road meet at the vanishing point
Parallel lines do not appear parallel in central projection
All listed here
The lines parallel to the negative plane are projected as parallel lines

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Surveying
Which of the following errors is not eliminated by the method of repetition of horizontal angle measurement ?

error due to wrong adjustment of line of collimation and trunnion axis
error due to eccentricity of verniers
error due to inaccurate graduation
error due to displacement of station signals

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Surveying
Bowditch rule is applied to

determine the effect of local attraction
a closed traverse for adjustment of closing error
None of these
an open traverse for graphical adjustment

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Surveying
Spring tides are caused when

Sun and moon are in line with earth
Solar tidal force and lunar tidal force both coincide
None of these
Solar tidal force acts opposite to lunar tidal force

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