Check lines (or proof lines) in Chain Surveying, are essentially required
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A negative declination shows that the magnetic meridian is to the
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The latitude of the observer's position, is
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If the staff is not held vertical at a level¬ling station, the reduced level calculated from the observation would be
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At the first point of Aeries, the sun moves
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The cross hairs in the surveying telescope are placed
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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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The smaller horizontal angle between the true meridian and a survey line, is known
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If δ is the declination of the Polaris and λ is the latitude of the place, the azimuth of the Polaris, 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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For a line AB
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Pick up the incorrect statement from the following. The angular distance of heavenly bodies on observer's meridian measured from the pole, is
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Detailed plotting is generally done by
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The station pointer is generally used in
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Which of the following errors is not eliminated by the method of repetition of horizontal angle measurement ?
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The negative sign is assigned to
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The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is
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The altitude of a heavenly body is its angular distance, measured on the vertical circle passing through the body, above
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‘H’ is the flying height above mean ground level and ‘f’ is the principal distance of a vertical photograph. The mean scale of the photographs is
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Which of the following errors can be neutralised by setting the level midway between the two stations ?
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