231. The principle of “traverse surveying” using a theodolite involves:
a) Measuring angles and distances between control points
b) Determining the elevation of survey points
c) Conducting precise leveling operations
d) Measuring the slope distance between two points
View Answer
Correct answer: a) Measuring angles and distances between control points
Explanation: Traverse surveying with a theodolite involves measuring both angles and distances between control points to establish a network of interconnected lines for mapping or surveying purposes.
232. 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.
233. The term “trunnion axis” in theodolite 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.
234. Which of the following is a common use of theodolite surveying in construction projects?
a) Determining the volume of earthwork
b) Measuring the flow rate of water in pipelines
c) Conducting geological surveys
d) Mapping underground utilities
View Answer
Correct answer: a) Determining the volume of earthwork
Explanation: Theodolite surveying is commonly used in construction projects to determine the volume of earthwork, such as excavations or fill material, by measuring angles and distances.
235. The process of “tracing” in theodolite surveying is used to:
a) Establish control points for surveying purposes
b) Measure the vertical angle of a point
c) Calculate the slope distance between two points
d) Mark the position of survey points on the ground
View Answer
Correct answer: d) Mark the position of survey points on the ground
Explanation: Tracing in theodolite surveying involves physically marking the position of survey points on the ground using stakes or other markers, based on the measured angles and distances.
236. The process of “balancing the instrument” in theodolite surveying ensures:
a) The instrument is properly leveled
b) The horizontal and vertical axes are aligned
c) The instrument is calibrated for accurate measurements
d) The instrument is securely mounted on the tripod
View Answer
Correct answer: a) The instrument is properly leveled
Explanation: Balancing the instrument in theodolite surveying refers to ensuring that the instrument is properly leveled, which is essential for accurate angle measurements.
237. The term “angular measurement” in theodolite surveying refers to:
a) Measuring the horizontal distance between two points
b) Measuring the vertical distance between two points
c) Measuring the angle between two intersecting lines
d) Measuring the azimuth of a line
View Answer
Correct answer: c) Measuring the angle between two intersecting lines
Explanation: Angular measurement in theodolite surveying involves measuring the angle between two intersecting lines, which provides information about the direction and orientation of the lines.
238. Which of the following is a type of theodolite used for measuring vertical angles?
a) Transit theodolite
b) Digital theodolite
c) Vernier theodolite
d) Theodolite with micrometer reading
View Answer
Correct answer: a) Transit theodolite
Explanation: Transit theodolites are commonly used for measuring vertical angles in surveying applications, as they have the ability to rotate the telescope around a vertical axis.
239. The process of “traversing” in theodolite surveying is used to:
a) Determine the elevation of survey points
b) Establish control points for surveying purposes
c) Measure the flow rate of water in pipelines
d) Measure the slope distance between two points
View Answer
Correct answer: b) Establish control points for surveying purposes
Explanation: Traversing in theodolite surveying involves establishing control points by measuring angles and distances, which serve as reference points for subsequent surveying operations.
240. The term “tachymetry” in theodolite surveying refers to:
a) Measuring angles using a stadia rod
b) Measuring distances using a stadia rod
c) Measuring vertical angles using a vertical circle
d) Measuring horizontal angles using a horizontal circle
View Answer
Correct answer: a) Measuring angles using a stadia rod
Explanation: Tachymetry in theodolite surveying involves measuring angles using a stadia rod, which has graduated marks used for estimating distances based on the principle of stadia intercepts.
