Q. If θ is the vertical angle of an inclined sight, δ is the angle of tilt of the staff, the error

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Q. If L is the perimeter of a closed traverse, ΔD is the closing error in departure, the correction for the departure of a traverse side of length l, according to Bowditch rule, is

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Q. The probable error of the adjusted bearing at the middle is

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Q. Let angular value of one graduation of a tube of length x be φ seconds and R be the radius of its internal curved surface, then

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Q. A tape of length l and weight W kg/m is suspended at its ends with a pull of P kg, the sag correction is

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Q. If the sight distance (S) is equal to the length of the vertical-curve (2l) joining two grades g1% and - g2%, the height of the apex will be

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Q. If the area calculated form the plan plotted with measurements by an erroneous chain, accurate area of the plan is

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Q. If θ is the probable error of an observed bearing of a line of length l, the error over the whole length of the traverse of n lines of length l is

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Q. The conventional sign shown in below figure represents a

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Q. The area of a plane triangle ABC, having its base AC and perpendicular height h, is

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Q. The formula for the horizontal distances for inclined sights, on staff held normal is

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Q. If α is the angle between the polar ray and the tangent at the point of commencement of a lemniscate curve, the equation of the curve, is

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Q. If Δ is the angle of deflection of the curve, T1 and T2 are its points of tangencies, the angle between the tangent at T1 and long chord T1 T2 will be

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Q. If d is the distance between equidistant odd ordinates, the Simpson's rule for the areas, is

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Q. To set out a parallel from a given inaccessible point to a given line AB, the following observations and made
Distance AB and angle PAM = a and angle PBA = b are measured where M is a point on the line BA produced. The perpendicular to the desired parallel line from A and B are :

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Q. The distance between the point of intersection of an up grade + g1% and downgrade g2% and the highest point of the vertical curve of length L, is

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Q. If V is the speed of a locomotive in km per hour, g is the acceleration due to gravity, G is the distance between running faces of the rails and R is the radius of the circular curve, the required super elevation is

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Q. The ratio of the radius and apex distance of a curve deflecting through Δ°, is

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Q. α, β are the horizontal angles measured at the ends of a base line AB to a hill top whose angle of elevation from station A is θ°. The height of the hill top above the trunnion axis of the theodolite station, is

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Q. Correct distance obtained by an erroneous chain is:

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