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

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

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Surveying
The prismatic compass and surveyor’s compass

both give QB of a line and WCB of a line
give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
both give QB of a line
both give WCB of a line

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Surveying
In the prismatic compass

the magnetic needle and graduated circle do not move with the box
the magnetic needle moves with the box
the line of the sight does not move with the box
the graduated circle is fixed to the box and the magnetic needle always remains in the N-S direction

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Surveying
Spring tides are caused when

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

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