211. What is the purpose of the vertical circle on a theodolite?
a) To measure horizontal angles
b) To measure vertical angles
c) To measure distances
d) To measure heights
View Answer
Correct answer: b) To measure vertical angles
Explanation: The vertical circle on a theodolite is used to measure vertical angles, allowing for the determination of heights and elevations.
212. Which of the following is a leveling instrument commonly used with a theodolite?
a) Leveling rod
b) Total station
c) Altimeter
d) Clinometer
View Answer
Correct answer: a) Leveling rod
Explanation: A leveling rod is commonly used with a theodolite to measure vertical distances and determine elevations during leveling operations.
213. The principle of “double centering” is used in theodolite surveying to:
a) Measure horizontal angles
b) Measure vertical angles
c) Level the instrument
d) Align the telescope with the vertical axis
View Answer
Correct answer: d) Align the telescope with the vertical axis
Explanation: Double centering is the process of aligning the telescope of a theodolite with the vertical axis by centering it on two opposite points.
214. The process of “traversing” in theodolite surveying involves:
a) Measuring distances between two points
b) Establishing a network of control points
c) Determining the elevation of survey points
d) Conducting topographic surveys
View Answer
Correct answer: b) Establishing a network of control points
Explanation: Traversing in theodolite surveying involves the process of establishing a network of control points by measuring angles and distances between traverse stations.
215. Which of the following is a limitation of theodolite surveying?
a) Limited accuracy in angle measurement
b) Limited range in distance measurement
c) Limited portability of the instrument
d) Limited availability of trained personnel
View Answer
Correct answer: b) Limited range in distance measurement
Explanation: Theodolite surveying has a limited range in distance measurement, as it primarily relies on direct measurement methods rather than electronic distance measurement (EDM) technology.
216. What is the purpose of the tribrach in a theodolite?
a) To stabilize the instrument during measurements
b) To adjust the horizontal and vertical axes
c) To house the optical system of the theodolite
d) To attach the instrument to a tripod
View Answer
Correct answer: d) To attach the instrument to a tripod
Explanation: The tribrach is a component of a theodolite that allows the instrument to be securely attached to a tripod for stability during measurements.
217. In theodolite surveying, the process of “repeating angles” is used to:
a) Verify the accuracy of angle measurements
b) Determine the elevation of a point
c) Measure the horizontal distance between two points
d) Determine the azimuth of a line
View Answer
Correct answer: a) Verify the accuracy of angle measurements
Explanation: Repeating angles involves taking multiple measurements of the same angle to ensure accuracy and reduce errors in theodolite surveying.
218. Which of the following is an advantage of using a digital theodolite?
a) Higher accuracy in angle measurements
b) Extended range in distance measurements
c) Faster and more efficient data collection
d) Better resistance to environmental conditions
View Answer
Correct answer: c) Faster and more efficient data collection
Explanation: Digital theodolites offer advantages in terms of faster and more efficient data collection, as they often have built-in features for automatic angle and distance measurements.
219. The process of “tachymetry” in theodolite surveying involves:
a) Measuring angles with high precision
b) Determining the elevation of survey points
c) Measuring distances using stadia lines
d) Conducting precise leveling operations
View Answer
Correct answer: c) Measuring distances using stadia lines
Explanation: Tachymetry in theodolite surveying is a method used to measure distances using stadia lines, which allows for rapid distance measurement in the field.
220. Which of the following is a common application of theodolite surveying?
a) Land boundary demarcation
b) Construction of highways
c) Underground utility mapping
d) Geodetic network establishment
View Answer
Correct answer: a) Land boundary demarcation
Explanation: Theodolite surveying is commonly used in land surveying applications, such as land boundary demarcation, to establish precise angles and distances for property boundaries.
