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Surveying

Surveying
A metallic tape is made of

cloth and wires
linen
steel
invar

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Surveying
The main object of the astronomer to obtain

Astronomical bearing
All of these
Astronomical latitude
Astronomical longitude

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Surveying
If α, H, A and δ be the altitude, hour angle, azimuth and declination of a circumpolar star at its elongation, in latitude λ, the following relation holds good

All listed here
cos H = tan λ/tan δ
sin A = cos δ/cos λ
sin α = sin λ/sin δ

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Surveying
At eastern elongation, the pole star moves

Eastward
Southward
Westward
Northward

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Surveying
If α is the observed altitude, the refraction correction in seconds, is

58" cot α
58 cos α
58" tan α
58 sin α

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Surveying
The nearest star is so far away from the earth that the directions to it from two diametrically opposite points on the earth differs less than

0.0001 second
0.01 second
None of these
0.001 second

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MORE MCQ ON Surveying

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