This set of Surveying Multiple Choice Questions & Answers (MCQs) focuses on “Transit Theodolite”.
1. ______ is the most precise instrument designed for the measurement of horizontal and vertical angles.
a) Survey chain
b) Dumpy level
c) Theodolite
d) Telescope
View 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.
2. Which of the following cannot be done with the help of theodolite in surveying?
a) Laying off horizontal angles
b) Locating points on lines
c) Prolonging survey lines
d) Measuring horizontal distances
View 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.
3. Which of the following cannot be done with the help of theodolite in surveying?
a) Establishing grades
b) Determining the difference in elevation
c) Setting out curves
d) Determining the area of ground
View 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, determining the difference in elevation, setting out curves etc.
4. 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) True
b) False
View 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.
5. 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.
a) True
b) False
View 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.
6. The transit theodolites are also called plain theodolites.
a) True
b) False
View Answer
Explanation: The non-transit theodolites are also called plain theodolites. In which the telescope cannot be transited.
7. The non-transit theodolites are also called Y- theodolites.
a) True
b) False
View Answer
Explanation: The non-transit theodolites are also called plain theodolites or Y – theodolites. In which the telescope cannot be transited.
8. The transit is the term simply used for _______
a) Telescope
b) Transit theodolite
c) Non- transit theodolites
d) Dumpy level
View 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.
9. Transit is mainly used and non-transit theodolites have now become obsolete.
a) True
b) False
View Answer
Explanation: Transit theodolites have more advantages over non-transit theodolites. That is why non-transit have now become obsolete.
10. How many types do theodolites classified?
a) 2
b) 3
c) 4
d) 5
View Answer
Explanation: Theodolites are classified into two types. They are transit theodolites and non – transit theodolites.
11. Which of the following is an integral part of the theodolite and is mounted on a spindle known as a horizontal axis?
a) Telescope
b) Index frame
c) Horizontal plane Vernier
d) Horizontal circle
View 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.
12. Horizontal axis is also called _______
a) Inner axis
b) Outer axis
c) Trunnion axis
d) Line of sight
View 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.
13. The vertical circle is a circular graduated arc attached to the ______ axis of the telescope.
a) inner axis
b) outer axis
c) trunnion axis
d) line of sight
View Answer
Explanation: The vertical circle is a circular graduated arc attached to the telescope. Consequently, the graduated arc rotates with the telescope when the latter is turned about the horizontal axis.
14. By means of vertical circle clamp and its corresponding ___________ the telescope can be set accurately at any desired position in the vertical plane.
a) tripod head
b) focusing screw
c) levelling head
d) tangent screw
View Answer
Explanation: By means of vertical circle clamp and its corresponding slow motion or tangent screw the telescope can be set accurately at any desired position in the vertical plane.
15. The index frame is ______ shaped frame.
a) U
b) V
c) T
d) A
View Answer
Explanation: The index frame is a T shaped frame consisting of a vertical leg known as clipping arm. It is also called a Vernier frame.
16. In theodolites, two standards resemble the letter ______
a) U
b) V
c) T
d) A
View Answer
Explanation: Two standards resemble letter A are mounted on the upper plates. The trunnion axis of the telescope is supported on these.
Sanfoundry Global Education & Learning Series – Surveying.
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