Q. The curvature of the earth's surface, is taken into account only if the extent of survey is more than

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Q. In chain surveying, perpendiculars to the chain line, are set out by

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Q. The difference in the lengths of an arc and its subtended chord on the earth surface for a distance of 18.2 km, is only

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Q. The boundary of water of a still lake, represents

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Q. Diaphragm of a surveying telescope is held inside

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Q. In a precision traverse, included angles are measured by setting the vernier

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Q. Pick up the correct statement from the following :

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Q. If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum perpendicular offset for the transition curve, is

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Q. The magnetic bearing of a line is 32° and the magnetic declination is 10° 15' W. The true bearing is

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Q. If deflection angles are measured in a closed traverse, the difference between the sum of the right-hand and that of the left hand angles should be equal to

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Q. Locating the position of a plane table station with reference to three known points, is known as

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Q. If D is the degree of the curve of radius R, the exact length of its specified chord, is

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Q. If the chain line which runs along N-S direction is horizontal and the ground in E-W direction is sloping

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Q. A lens or combination of lenses in which the following defect is completely eliminated is called aplanatic

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Q. While setting a plane table at a station it was found that the error in centering was 30 cm away from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the displacement of the end of the ray in plan from the true position will be

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Q. In precision theodolite traverse if included angles are read twice and the mean reading accepted using both verniers having a least count of 30". Assuming the instrument to be in perfect adjustment, linear measurements correct to 6 mm per 30 metre tape duly corrected for temperature, slope and sag, the angular error of closure not to exceed (where n is the number of traverse legs)

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Q. Straight, parallel and widely spaced contours represent

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Q. The theodolites used for making tacheometric observations by optical wedge system, are

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Q. Tilt of the staff in stadia tacheometry increases the intercept if it is

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Q. To orient a plane table at a point with two inaccessible points, the method generally adopted, is

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