Q. Tacheometric formula for horizontal distances using horizontal sights can also suitable be employed for inclined sights through θ by multiplying

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Q. The method of reversal

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Q. You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the method of

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Q. If the plane table is not horizontal in a direction at right angles to the alidade, the line of sight is parallel to the fiducial edge only for

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Q. If the whole circle bearing of a line is 180°, its reduced bearing is

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Q. The chord of a curve less than peg interval, is known as

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Q. Mistakes which may produce a very serious effect upon the final results arise due to

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Q. A well conditioned triangle has no angle less than

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Q. Contour lines of different elevations can unite to form one line, only in the case of

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Q. The line of sight is kept as high above ground surface as possible to minimise the error in the observed angles due to

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Q. Number of subdivisions per metre length of a levelling staff is

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Q. A lemniscate curve between the tangents will be transitional throughout if the polar deflection angle of its apex, is

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Q. Pick up the correct statement from the following :

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Q. Prolongation of chain line across an obstruction in chain surveying, is done by

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Q. Check lines (or proof lines) in Chain Surveying, are essentially required

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Q. While measuring the distance between two points along upgrade with the help of a 20 m chain, the forward end of the chain is shifted forward through a distance

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Q. Subtense tacheometry is generally preferred to if ground is

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Q. For high sensivity of the bubble tube

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Q. Short offsets are measured with

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Q. The operation of revolving a plane table about its vertical axis so that all lines on the sheet become parallel to corresponding lines on the ground, is known

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