191. The process of “closing the traverse” in plane tabling involves:
a) Balancing the instrument setup with equal readings on both sides
b) Repeating the traversing process from the last point to the first point
c) Taking readings from both the forward and backward directions
d) Ensuring the closure of the traversed loop of survey lines
View Answer
Correct answer: d) Ensuring the closure of the traversed loop of survey lines
Explanation: Closing the traverse in plane tabling involves ensuring the closure of the traversed loop of survey lines, indicating that the measurements and observations are accurate and the survey is complete.
192. The concept of “interpolation” in plane tabling refers to:
a) The process of estimating missing survey data between known points
b) Drawing lines between instrument stations on the survey sketch
c) The measurement of distances using an interpolator instrument
d) The determination of elevations using vertical angle measurements
View Answer
Correct answer: a) The process of estimating missing survey data between known points
Explanation: Interpolation in plane tabling refers to the process of estimating missing survey data between known points on the survey sketch, enhancing the accuracy and completeness of the survey.
193. The process of “balancing the traverse legs” in plane tabling involves:
a) Adjusting the leveling bubble of the instrument
b) Equalizing the lengths of the traversed legs
c) Repeating the traversing process from the last point to the first point
d) Ensuring the closure of the traverse loop
View Answer
Correct answer: b) Equalizing the lengths of the traversed legs
Explanation: Balancing the traverse legs in plane tabling involves equalizing the lengths of the traversed legs by adjusting the measurements or observations, thereby minimizing errors and ensuring the accuracy of the survey.
194. The term “topographic survey” in plane tabling refers to:
a) The measurement of horizontal distances and angles in surveying
b) The creation of a detailed map showing natural and man-made features
c) The determination of elevations and contours in a survey area
d) The calculation of the area enclosed by a boundary on the survey sketch
View Answer
Correct answer: b) The creation of a detailed map showing natural and man-made features
Explanation: Topographic survey in plane tabling involves the creation of a detailed map that shows the natural and man-made features of the survey area, providing a comprehensive representation of the terrain.
195. The concept of “running a check line” in plane tabling refers to:
a) Drawing a line between two instrument stations for verification
b) Checking the accuracy of the instrument setup by leveling
c) Taking additional measurements from known reference points
d) Repeating the traversing process using different instrument stations
View Answer
Correct answer: a) Drawing a line between two instrument stations for verification
Explanation: Running a check line in plane tabling involves drawing a line between two instrument stations as a means of verification to ensure the accuracy of the survey and detect any potential errors.
196. The process of “tilting the alidade” in plane tabling involves:
a) Adjusting the vertical angle of the alidade
b) Tilting the plane table to a specific inclination
c) Aligning the alidade with the meridian line
d) Leveling the alidade using the leveling screws
View Answer
Correct answer: a) Adjusting the vertical angle of the alidade
Explanation: Tilting the alidade in plane tabling refers to adjusting the vertical angle of the alidade to ensure accurate measurements of vertical angles during the surveying process.
197. The concept of “double sighting” in plane tabling refers to:
a) Taking readings from both the forward and backward directions
b) Observing a point from two different instrument stations
c) Balancing the instrument setup with equal readings on both sides
d) Repeating the traversing process from the last point to the first point
View Answer
Correct answer: b) Observing a point from two different instrument stations
Explanation: Double sighting in plane tabling involves observing a point of interest from two different instrument stations to improve accuracy and minimize errors caused by instrumental or observational factors.
198. The process of “plotting the bearings” in plane tabling involves:
a) Measuring the magnetic declination at the survey location
b) Drawing lines indicating the direction of the survey lines on the sketch
c) Calculating the bearing angles between survey points
d) Balancing the instrument setup with equal readings on both sides
View Answer
Correct answer: b) Drawing lines indicating the direction of the survey lines on the sketch
Explanation: Plotting the bearings in plane tabling involves drawing lines on the survey sketch to indicate the direction of the survey lines, aiding in the visual representation and interpretation of the survey data.
199. The concept of “orienting the plane table” in plane tabling refers to:
a) Aligning the plane table with the magnetic north direction
b) Balancing the leveling bubble of the plane table
c) Positioning the plane table over the center mark
d) Establishing the reference direction for the survey sketch
View Answer
Correct answer: d) Establishing the reference direction for the survey sketch
Explanation: Orienting the plane table in plane tabling involves establishing the reference direction for the survey sketch, typically aligning it with the magnetic north or any other desired reference direction.
200. The process of “radiation with a side shot” in plane tabling involves:
a) Taking additional measurements from a known reference point
b) Locating a point from the instrument station using lateral measurements
c) Balancing the instrument setup with equal readings on both sides
d) Drawing lines indicating the direction of the survey lines on the sketch
View Answer
Correct answer: b) Locating a point from the instrument station using lateral measurements
Explanation: Radiation with a side shot in plane tabling involves locating a point from the instrument station using lateral measurements, which involves sighting to the point of interest in a lateral or sideways direction from the instrument station.
