Civil Engineering :: Advanced Surveying
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The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is
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In a tropical year, the number of sidereal days, are
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Pick up the correct statement from the following :
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Polaris is usually observed for the determination of the azimuth when it is
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The latitude (λ) of a place and the altitude (α) of the pole are related by
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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
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Places having same latitude
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The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is
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The difference in longitude of two places expressed in time is equal to the difference in their
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The scale of a vertical photograph of focal length f taken from height of H metres above M.S.L., at a point of reduced level h, is
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