Surveying
The size of a plane table is

750 mm × 900 mm
450 mm × 600 mm
600 mm × 750 mm
300 mm × 450 mm

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Surveying
The First Point of Aeries

All listed here
Is usually denoted by the Greek letter ?
Is located near the very conspicuous rectangle of stars in the constellations of Pegasus and Andromeda
Is the point in the celestial sphere where zero meridian crosses the celestial equator

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Surveying
Which of the following errors cannot be eliminated by taking both face observations ?

None of these
index error i.e. error due to imperfect adjustment of the vertical circle vernier
error due to non-parallelism of the axis of telescope level and line of collimation
error due to horizontal axis not being perpendicular to the vertical axis

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