241. The term “trunnion axis” in theodolite surveying refers to:
a) The vertical axis of the instrument
b) The horizontal axis of the instrument
c) The rotation mechanism of the telescope
d) The leveling mechanism of the instrument
View Answer
Correct answer: b) The horizontal axis of the instrument
Explanation: The trunnion axis in a theodolite is the horizontal axis around which the telescope rotates for measuring horizontal angles.
242. The process of “resection” in theodolite surveying is used to:
a) Determine the azimuth of a line by sighting to a known point
b) Measure the vertical angle of a point
c) Calculate the slope distance between two points
d) Determine the elevation of a point using leveling techniques
View Answer
Correct answer: a) Determine the azimuth of a line by sighting to a known point
Explanation: Resection in theodolite surveying involves determining the azimuth of a line by sighting to a known point from an unknown location, which helps establish the position and orientation of the surveying instrument.
243. The process of “back-observation” in theodolite surveying is used to:
a) Determine the elevation of survey points
b) Measure the flow rate of water in pipelines
c) Measure the slope distance between two points
d) Check the accuracy of previously measured angles
View Answer
Correct answer: d) Check the accuracy of previously measured angles
Explanation: Back-observation in theodolite surveying involves re-observing previously measured angles to ensure their accuracy and detect any errors or mistakes in the initial measurements.
244. The term “theodolite traverse” refers to:
a) A method of surveying using a theodolite and a total station
b) A technique for measuring vertical angles in theodolite surveying
c) A sequence of interconnected survey lines established by theodolite measurements
d) A type of theodolite instrument with advanced digital features
View Answer
Correct answer: c) A sequence of interconnected survey lines established by theodolite measurements
Explanation: A theodolite traverse refers to a series of interconnected survey lines established using theodolite measurements, forming a network of lines for surveying purposes.
245. The term “vertical circle” in theodolite surveying refers to:
a) The horizontal plane passing through the instrument’s axis
b) The vertical plane passing through the instrument’s axis
c) The mechanism for adjusting the vertical axis of the instrument
d) The telescope’s rotation mechanism around the horizontal axis
View Answer
Correct answer: b) The vertical plane passing through the instrument’s axis
Explanation: The vertical circle in theodolite surveying is a graduated circle located in the vertical plane passing through the instrument’s axis. It is used for measuring vertical angles.
246. The process of “sighting” in theodolite surveying involves:
a) Setting up the instrument on a tripod
b) Aligning the instrument with a reference point or target
c) Taking angular readings using the graduated circle
d) Determining the azimuth of a line
View Answer
Correct answer: b) Aligning the instrument with a reference point or target
Explanation: Sighting in theodolite surveying refers to the process of aligning the instrument with a specific reference point or target, ensuring that the line of sight is accurately directed towards the desired location.
247. The term “trunnion axis” in theodolite surveying refers to:
a) The vertical axis of the instrument
b) The horizontal axis of the instrument
c) The rotation mechanism of the telescope
d) The leveling mechanism of the instrument
View Answer
Correct answer: b) The horizontal axis of the instrument
Explanation: The trunnion axis in a theodolite is the horizontal axis around which the telescope rotates for measuring horizontal angles.
248. The process of “resection” in theodolite surveying is used to:
a) Determine the azimuth of a line by sighting to a known point
b) Measure the vertical angle of a point
c) Calculate the slope distance between two points
d) Determine the elevation of a point using leveling techniques
View Answer
Correct answer: a) Determine the azimuth of a line by sighting to a known point
Explanation: Resection in theodolite surveying involves determining the azimuth of a line by sighting to a known point from an unknown location, which helps establish the position and orientation of the surveying instrument.
249. The process of “back-observation” in theodolite surveying is used to:
a) Determine the elevation of survey points
b) Measure the flow rate of water in pipelines
c) Measure the slope distance between two points
d) Check the accuracy of previously measured angles
View Answer
Correct answer: d) Check the accuracy of previously measured angles
Explanation: Back-observation in theodolite surveying involves re-observing previously measured angles to ensure their accuracy and detect any errors or mistakes in the initial measurements.
250. The term “theodolite traverse” refers to:
a) A method of surveying using a theodolite and a total station
b) A technique for measuring vertical angles in theodolite surveying
c) A sequence of interconnected survey lines established by theodolite measurements
d) A type of theodolite instrument with advanced digital features
View Answer
Correct answer: c) A sequence of interconnected survey lines established by theodolite measurements
Explanation: A theodolite traverse refers to a series of interconnected survey lines established using theodolite measurements, forming a network of lines for surveying purposes.
