Q. In reciprocal levelling, the error which is not completely eliminated, is due to

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Q. In tacheometrical observations, vertical staff holding is generally preferred to normal staffing, due to

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Q. Removal of parallax, may be achieved by focussing

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Q. Pick up the correct statement from the following :

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Q. The curve composed of two arcs of different radii having their centres on the opposite side of the curve, is known

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Q. The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescope's

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Q. The bubble tube is nearly filled with

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Q. Simpson's rule for calculating areas states that the area enclosed by a curvilinear figure divided into an even number of strips of equal width, is equal to

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Q. In a constant level tube, size of the bubble remains constant because upper wall is

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Q. The direction of steepest slope on a contour, is

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Q. Back bearing of a line is equal to

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Q. In an internal focusing telescope

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Q. The longitudinal section of the surface of bubble tube is

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Q. Imaginary line passing through points having equal magnetic declination is termed as

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Q. The reduced bearing of a line is N 87° W. Its whole circle bearing is

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Q. Surveys which are carried out to depict mountains, rivers, water bodies, wooded areas and other cultural details, are known as

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Q. Which of the following introduces an error of about 1 in 1000 if 20 m chain is used

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Q. In a lemniscate curve the ratio of the angle between the tangent at the end of the polar ray and the straight, and the angle between the polar ray and the straight, is

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Q. Ranging in chain survey means

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Q. Accurate measurement of deflection angles with a transit not properly adjusted may be made by

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