Q. A sewer is laid from a manhole A to a manhole B, 250 m away along a gradient of 1 in 125. If the reduced level of the invert at A is 205.75 m and the height of the boning rod is 3 m, the reduced level of the sight rail at B, is

View solution

Q. The Huygen's telescope eye piece

View solution

Q. The operation of resection involves the following steps

1. rough orientation of the plane table
2. the three lines form a triangle of error
3. drawing lines back through the three control points
4. select a point in the triangle of error such that each ray is equally rotated either clockwise or anti clockwise
5. the points obtained by three rays is the correct location.

The correct sequence is

View solution

Q. To avoid large centering error with very short legs, observations are generally made

View solution

Q. During secular variation of magnetic meridian at different places

View solution

Q. Designation of a curve is made by :

View solution

Q. The smaller horizontal angle between the true meridian and a survey line, is known

View solution

Q. The distance between terminal points computed from a subsidiary traverse run between them, is generally known, as

View solution

Q. For locating a distant object visible from two transit stations, the method usually preferred to, is

View solution

Q. Tacheometric formula for horizontal distances using horizontal sights can also suitable be employed for inclined sights through θ by multiplying

View solution

Q. The method of reversal

View solution

Q. You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the method of

View solution

Q. If the plane table is not horizontal in a direction at right angles to the alidade, the line of sight is parallel to the fiducial edge only for

View solution

Q. If the whole circle bearing of a line is 180°, its reduced bearing is

View solution

Q. The chord of a curve less than peg interval, is known as

View solution

Q. Mistakes which may produce a very serious effect upon the final results arise due to

View solution

Q. A well conditioned triangle has no angle less than

View solution

Q. Contour lines of different elevations can unite to form one line, only in the case of

View solution

Q. The line of sight is kept as high above ground surface as possible to minimise the error in the observed angles due to

View solution

Q. Number of subdivisions per metre length of a levelling staff is

View solution