171. In plane tabling, the term “intersection of lines” refers to:
a) The meeting point of the survey lines on the drawing
b) The point where two lines cross each other
c) The process of aligning the instrument with a reference point
d) The measurement of angles between lines
View Answer
Correct answer: b) The point where two lines cross each other
Explanation: Intersection of lines in plane tabling represents the point where two lines, drawn from different instrument stations, intersect each other on the survey sketch.
172. The process of “traversing with a back sight” in plane tabling involves:
a) Measuring angles between points in the backward direction
b) Repeating the traversing process from the last point to the first point
c) Taking readings from both the forward and backward directions
d) Balancing the instrument setup with equal readings on both sides
View Answer
Correct answer: b) Repeating the traversing process from the last point to the first point
Explanation: Traversing with a back sight in plane tabling requires repeating the traversing process from the last point to the first point, using reverse measurements, to ensure closure and accuracy in the survey.
173. The concept of “radiation with a back sight” in plane tabling refers to:
a) Locating a point from the instrument station using reverse measurements
b) Aligning the instrument with a known reference point in the backward direction
c) Establishing the position of the instrument station with backward observations
d) Determining the direction of the magnetic north in reverse
View Answer
Correct answer: a) Locating a point from the instrument station using reverse measurements
Explanation: Radiation with a back sight in plane tabling involves locating a point from the instrument station by using reverse measurements, i.e., sighting from the instrument station to the point of interest in the backward direction.
174. The process of “centering the instrument” in plane tabling involves:
a) Placing the instrument at the center of the survey area
b) Aligning the instrument with the center point of the drawing sheet
c) Ensuring the instrument is positioned over the center mark on the plane table
d) Balancing the leveling bubble of the instrument
View Answer
Correct answer: c) Ensuring the instrument is positioned over the center mark on the plane table
Explanation: Centering the instrument in plane tabling refers to positioning the instrument over the center mark on the plane table, ensuring it is aligned with the center of the drawing sheet.
175. The concept of “traversing with two instrument stations” in plane tabling refers to:
a) A process where two plane tables are used simultaneously for measurements
b) A technique of traversing where only two instrument stations are used
c) A method of traversing that involves taking two sets of measurements at each point
d) A type of traversing that requires two surveyors working together
View Answer
Correct answer: b) A technique of traversing where only two instrument stations are used
Explanation: Traversing with two instrument stations in plane tabling is a technique where only two instrument stations are used for the traversing process, simplifying the measurements and calculations.
176. The concept of “traversing with a resection” in plane tabling refers to:
a) Locating the instrument station by sighting from known points
b) Taking readings from both the forward and backward directions in traversing
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: a) Locating the instrument station by sighting from known points
Explanation: Traversing with a resection in plane tabling involves locating the instrument station by sighting from known points and aligning the instrument accordingly.
177. The process of “tracing details” in plane tabling involves:
a) Drawing detailed features on the survey sketch
b) Copying the survey sketch onto a transparent sheet
c) Estimating the dimensions of objects in the survey area
d) Calculating the area enclosed by a boundary
View Answer
Correct answer: a) Drawing detailed features on the survey sketch
Explanation: Tracing details in plane tabling refers to the process of adding fine details and features to the survey sketch, enhancing its accuracy and clarity.
178. The term “triangulation” in plane tabling refers to:
a) Measuring angles between three points
b) Drawing a triangle on the survey sketch
c) Locating points using the trigonometric functions
d) The process of establishing control points using triangles
View Answer
Correct answer: d) The process of establishing control points using triangles
Explanation: Triangulation in plane tabling involves the process of establishing control points by using triangles formed by survey points, which aids in the accurate positioning of features on the survey sketch.
179. The concept of “off-setting” in plane tabling refers to:
a) The process of measuring angles between points
b) The act of taking measurements from multiple instrument stations
c) Drawing lines perpendicular to the survey lines to locate points
d) Estimating the elevation differences between points
View Answer
Correct answer: c) Drawing lines perpendicular to the survey lines to locate points
Explanation: Off-setting in plane tabling involves drawing lines perpendicular to the survey lines to locate points or features accurately on the survey sketch.
180. The term “reciprocal leveling” in plane tabling refers to:
a) Leveling the instrument using reciprocal measurements
b) Taking leveling readings from multiple instrument stations
c) Balancing the instrument setup with equal readings on both sides
d) Measuring the height of an object from different directions
View Answer
Correct answer: b) Taking leveling readings from multiple instrument stations
Explanation: Reciprocal leveling in plane tabling involves taking leveling readings from multiple instrument stations to ensure accuracy and minimize errors caused by the instrument or observation.
