Q. If D is distance between centres of two parallel track of gauge G, then, total length of cross-over (from the point of commencement to the point of termination) with an intermediate straight portion and N crossing, is given by

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Q. The difference in the lengths of two diagonals of a rail diamond is

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Q. If S is cant deficiency in centimetres and V is maximum permissible speed in km p.h,, the maximum length of transition curves, is

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Q. The distance between the theoretical noses of crossing along the same rail, in case of diamond crossing, is

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Q. If S and H are strength and hardness index of a timber at 12% moisture content, the composite sleeper index, is

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Q. If G is gauge is metres, V is speed of trains in km/hour and R is radius of a curve in metres, the equilibrium superelevation is

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Q. Widening of gauge is provided if degree of the curve, is

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Q. The lengths of the standard crossings in India for Broad gauge and Metre gauge tracks is same for

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Q. If w is width of sleepers, s is sleeper spacing and d is depth of ballast then

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Q. On Indian Railways, the approximate weight of a rail section is determined from the formula

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Q. If D is distance between centres of two parallel tracks of gauge G with entire curved leads and equal angles of crossing, total length of crossover, is

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Q. If the standard length of a crossing is 480 cm, the number of crossing is

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Q. If S is the switch angle and α is diamond angle, r is the radius of slip, the distance between middle point slip and the nose of obtuse crossing, is

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Q. Wooden sleepers used on the girders of bridges, are generally made of

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Q. If a 0.7% upgrade meets a 0.65% downgrade at a summit and the permissible rate of change of grade per chain length is 0.10%, the length of the vertical curve, is

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Q. Overall depth of a dog spike, is

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Q. Pot sleepers are in the form of

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Q. In railways a triangle is mainly provided for

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Q. A kink is made in stock rails, ahead of the toe of switch at a distance of

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Q. Rails are bent to correct curvature if the degree of curve, is more than

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