The two point problem and three point problem are methods of
Pick up the correct statement for horizontal photographs.
The line of sight is kept as high above ground surface as possible to minimise the error in the observed angles due to
If i is the stadia distance, f is the focal length and d is the distance between the objective and vertical axis of the techeometer, the multiplying constant, is
The desired sensitivity of a bubble tube with 2 mm divisions is 30". The radius of the bubble tube should be
Subtense bar is an instrument used for
Volume of the earth work may be calculated by
Tacheometric formula for horizontal distances using horizontal sights can also suitable be
Pick up the correct statement from the following:
The apparent error on reversal is
Over-turning of vehicles on a curve can be avoided by using
Which of the following introduces an error of about 1 in 1000 if 20 m chain is used
Chain surveying is well adopted for
Two contour lines, having the same elevation
The conventional sign shown in below figure represents a
Which of the following statements is incorrect?
In levelling operation,
In levelling operation if the change point reduced level is known as a control point. Then, taking backsight is not required.
The second sight may be intermediate sight or backsight.
For a line to be drawn commencement is done with a backsight and closes with foresight in levelling
The length of a traverse leg may be obtained by multiplying the latitude and
While working on a plane table, the correct rule is:
The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known
In the cross-section method of indirect contouring, the spacing of cross-sections depends upon
(i) Contour interval
(ii) Scale of plan
(iii) Characteristics of ground
The correct answer is
Transition curves are introduced at either end of a circular curve, to obtain
Ifa andb be the elevation of two subjects A and B respectively , q be the angle observed by a sextant. The correct horizontal angle is
Tilt of the staff in stadia tacheometry increases the intercept if it is
Three point problem can be solved by