The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every
If the rate of gain of radial acceleration is 0.3 m per sec3 and full centrifugal ratio is developed. On the curve the ratio of the length of the transition curve of same radius on road and railway, is
In optical reading instruments
The systematic errors which persist and have regular effects in the performance of a survey operation, are due to
The angle between two plane mirrors of optical square, is
For setting out a simple curve, using two theodolites.
Metric chains are generally available in
The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known
Pick up the correct statement from the following :
The diaphragm of a stadia theodolite is fitted with two additional
The latitude of a traverse leg is obtained by multiplying its length by
Geodetic surveying is undertaken
On a diagonal scale, it is possible to read up to
Deviation of the actual road gradient from the proposed contou'r gradient up hill side, involves
Centering error of a theodolite produces an error
True meridian of different places
The best method of interpolation of contours, is by
For a curve of radiusm and normal chordm, the Rankine's deflection angle, is
The desired sensitivity of a bubble tube with 2 mm divisions is 30". The radius of the bubble tube should be
Plotting of inaccessible points on a plane table, is done by
Measuring with am chain, 0.m too short, introduces
Orientation of a plane table by solving two point problem is only adopted when
The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known
Pick up the correct specification of Ramsden eyepiece from the following :
A uniform slope was measured by the method of stepping. If the difference in level between two points is 1.8 m and the slope distance between them ism, the error is approximately equal to
A dumpy level was set up at the midpoint between two pegs A and B,m apart and the staff readings at A and B were 1.and 1.With the level set up a A, the readings at A and B were 1.and 1.The collimation error perm length of sight is
A dumpy level is set up with its eye-piece vertically over a peg A. The height from the top of peg A to the centre of the eye-piece is 1.m and the reading on peg B is 0.m. The level is then setup over B. The height of the eye-piece above peg B is 1.m and a reading on A is 2.m. The difference in level between A and B is
Setting out a curve by two theodolite method, involves
A back sight
A relatively fixed point of known elevation above datum, is called
Probable systematic error in precise levelling as recommended by International Geodetic Association should not exceed (where k is in kilometers.)
When the bubble of the level tube of a level, remains central
Cross hairs in surveying telescopes, are fitted
Two hill tops A and Bkm apart are intervened by a third top C. If the top most contour of the three hill tops are of the same value, state whether the line of sight AB
If the area calculated form the plan plotted with measurements by an erroneous chain, accurate area of the plan is
An ideal transition curve is
The direction of steepest slope on a contour, is
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
In case of reduction of levels by the height of instrument method,
A traverse deflection angle is
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