Surveying Questions

• Pick up the correct statement from the following :
• ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is 30°, the bearing of CD, is
• The intercept of a staff
• Closed contours of decreasing values towards their centre, represent
• Hydrographic surveys deal with the mapping of
• The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to
• In chain surveying field work is limited to
• Diopter is the power of a lens having a focal length of
• In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by
• If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, should not exceed.
• The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known
• An ideal transition curve is
• In levelling operation
• Pantagraph is used for
• 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
• Centering error of a theodolite produces an error
• 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
• When the bubble of the level tube of a level, remains central
• The angle between two plane mirrors of optical square, is
• In optical reading instruments