1. 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
Explanation: Theodolite may be classified as transit and non-transit theodolite. The non-transit theodolites are those in which the telescope cannot be transited.
2. The transit theodolites are also called plain theodolites.
a) true
b) false
Explanation: The non-transit theodolites are also called plain theodolites. In which the telescope cannot be transited.
3. The non-transit theodolites are also called Y- theodolites.
a) true
b) false
Explanation: The non-transit theodolites are also called plain theodolites or Y – theodolites. In which the telescope cannot be transited.
4. Transit is mainly used and non-transit theodolites have now become obsolete.
a) true
b) false
Explanation: Transit theodolites have more advantages over non-transit theodolites. That is why non-transit have now become obsolete.
5. The transit is the term simply used for _______
a) Telescope
b) Transit theodolite
c) Non- transit theodolites
d) Dumpy level
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.
6. How many types do theodolites classified?
a) 2
b) 3
c) 4
d) 5
Explanation: Theodolites are classified into two types. They are transit theodolites and non – transit theodolites.
7. 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
Explanation: The telescope is an integral part of the theodolite. It is mounted on a spindle known as a horizontal axis or trunnion axis.
8. Horizontal axis is also called _______
a) Inner axis
b) Outer axis
c) Trunnion axis
d) Line of sight
Explanation: The telescope is an integral part of the theodolite. It is mounted on a spindle known as a horizontal axis or trunnion axis.
9. 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
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.
10. 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
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.