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Surveying

Surveying
For a tacheometer the additive and multi-plying constants are respectively

0 and 0
100 and 0
100 and 100
0 and 100

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Surveying
Cross staff is an instrument used for

measuring approximate horizontal angles
None of these
setting out right angles
measuring bearings of the lines

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Surveying
At lower culmination, the pole star moves

Northward
Westward
Eastward
Southward

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Surveying
If the staff is not held vertical at a level¬ling station, the reduced level calculated from the observation would be

true R.L.
more than true R.L.
less than true R.L.
None of these

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Surveying
With the rise of temperature, the sensitivity of a bubble tube

increases
remains unaffected
decreases
None of these

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Surveying
The correction for parallax, is

+ 8".8 cos α
- 8".8 cos α
+ .8" sin α
- 8".8 cos α

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