Surveying
The stereo plotting instruments are generally manufactured on the principle of

All of these
Optical mechanism projection
Optical projection
Mechanical projection

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Surveying
Bowditch rule is applied to

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

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Surveying
Spring tides are caused when

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

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Surveying
In the prismatic compass

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

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