If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant is
If the spacing of cross hairs in a stadia diaphragm of a tacheometer is 1.2 mm and the focal length of object glass is 24 cm, then the multiplying constant of tacheometer is
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If an upgrade of 1.5% is followed by a downgrade of 0.5% and rate of change of grade is 0.2% per 20 m chain, then the length of vertical curve is
If ‘g_{1} ’ and ‘g_{2}’ are the two gradients, ‘r’ is the rate of change of grade (%) per chain, the length of the vertical curve will be
A transition curve is required for a circular curve of 200 m radius, the gauge being 1.5 m and maximum superelevation restricted to 15 cm. The transition is to be designed for a velocity such that no lateral pressure is imposed on the rails and rate of gain of radial acceleration is 30 cm/s^{2}. The required length of transition curve will be
The lengths of long chord and tangents of a circular curve are equal for a deflection angle of
The staff intercepts on a vertically held staff at a distance of 50 m and 200 m were found to be 0.49 m and 1.99 m respectively. The constants of instrument used are
31 docs280 tests

31 docs280 tests
