Traverse survey

______ is the most precise instrument designed for the measurement of horizontal and vertical angles.

• Telescope

• Theodolite

• Dumpy level

• Survey chain

Answer explanation

Theodolite is the most precise instrument designed for the measurement of horizontal and vertical angles. It has wide applicability in surveying such as laying off horizontal angles, locating points on line, prolonging survey lines, establishing grades etc.

A transit theodolite is one in which the line of sight can be reversed by resolving the telescope through 180° in a vertical plane.

• True

• False

Answer explanation

Theodolite may be classified as transit and non-transit theodolite. A transit theodolite is one in which the line of sight can be reversed by resolving the telescope through 180° in a vertical plane.

A non-transit theodolite is one in which the line of sight can be reversed by resolving the telescope through 180° in a vertical plane.

• True

• False

Answer explanation

Theodolite may be classified as transit and non-transit theodolite. The non-transit theodolites are those in which the telescope cannot be transited.

The transit is the term simply used for _______

• Telescope

• Transit theodolite

• Non- transit theodolite

• Non- transit theodolite

Answer explanation

A transit theodolite is simply called transit. It is one in which the line of sight can be reversed by resolving the telescope through 180° in a vertical plane.

Which of the following is an integral part of the theodolite and is mounted on a spindle known as a horizontal axis?

• Telescope

• Index frame

• Horizontal circle

• Horizontal plane Vernier

Answer explanation

The telescope is an integral part of the theodolite. It is mounted on a spindle known as a horizontal axis or trunnion axis.

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

• True

• False

Answer explanation

In theodolites, the upper plate carrier’s two plate levels placed at right angles to each other. One of the plate levels is kept parallel to the trunnion axis.

Vertical angle is measured in the theodolite as Zenith angle.

• True

• False

Answer explanation

The vertical angle is usually measured as a zenith angle which indicates 0° vertically up, 90° at horizontal, and 180° vertically down. The zenith angle is generally easier to work.

Which of the following indicates the correct set of the combination of total station?

• EDM, GPS

• Theodolite, EDM

• Theodolite, compass

• Electronic theodolite, EDM

Answer explanation

A total station is a combination of an electronic theodolite and an Electronic Distance Measurement. This combination makes it possible to determine the coordinates of a reflector by aligning the instruments cross-hairs on the reflector and simultaneously measuring the vertical, horizontal angles and slope distances.

Which among the following doesn’t indicate the basic calculation of the total station?

• Slope distance

• Vertical distance

• Horizontal distance

• Co-ordinate calculations

Answer explanation

The basic calculations of total stations include horizontal distance, vertical distance, co-ordinate distance in which, slope distance is used in horizontal distance calculations. It is obtained directly from the total station equipment.

The data obtained from total station can be used in which among the following software directly?

• Surfer

• Primavera

• STAAD PRO

• Autodesk Revit

Answer explanation

The data obtained from the total station can be indirectly used in STAAD Pro, Autodesk Revit, Primavera but it can be directly used in software’s like Arc GIS, Surfer, Auto CAD etc., as they are linked with it.