Q. Which of the following is not a function of levelling head?

View solution

Q. In theodolites, the upper plate carriers two plate levels placed at right angles to each other.

View solution

Q. The plate level can be centered with the help of _______

View solution

Q. On clamping the upper screw and unclamping the lower clamp, the instrument can rotate on its outer axis without any relative motion between the two plates.

View solution

Q. On unclamping the upper screw and clamping the lower clamp, the instrument can rotate on its inner axis with relative motion between vernier and scale.

View solution

Q. Which of the following is used to test the horizontality of the transit axis or trunnion axis?

View solution

Q. Temporary adjustments are those which are made at every instrument setting and preparatory to taking observations.

View solution

Q. Setting up includes which of the following?

View solution

Q. Parallax is a condition arising when the image formed by the object is in the plane of the cross hairs.

View solution

Q. Parallax can be eliminated by focusing the eye piece and objective.

View solution

Q. For adjustment purposes, the index arm can be rotated slightly with the help of a ________ screw.

View solution

Q. To measure the horizontal angle which of the following is the first step?

View solution

Q. After setting up the instrument first thing done by the surveyor is _________

View solution

Q. The method of repetition is used to measure a horizontal angle to a finer degree of accuracy than that obtained with the least count of the vernier.

View solution

Q. After levelling of an instrument is done what is the next up?

View solution

Q. To measure a horizontal angle, after releasing all clamps, we turn the upper and lower plates in the same direction.

View solution

Q. If one of the vernier is at 0° then another vernier reading shows / also shows ______

View solution

Q. To measure a horizontal angle by direct method is also called a repetition method.

View solution

Q. For measuring an angle to the highest degree of precision, several sets of repetitions are usually taken.

View solution

Q. In first method of taking single set, after keeping the telescope normal throughout we measure the angle clockwise by 6 repetitions. We obtain the first value of the angle by dividing the final reading by _______

View solution