This set of Surveying Interview Questions and Answers for freshers focuses on “Principle of Compass Traversing”.
1. In chain and compass traversing, the magnetic bearings of the survey lines are measured by a __________
a) chain
b) compass
c) theodolite
d) dumpy level
View Answer
Explanation: In chain and compass traversing, the magnetic bearings of the survey lines are measured by a compass and the lengths of the lines are measured either with a chain or with a tape.
2. How many methods of observing the bearings of lines by fast needle method?
a) 2
b) 3
c) 4
d) 5
View Answer
Explanation: There are three methods of observing the bearings of lines by fast needle method. They are a direct method with transiting, direct method without transiting and back bearing method.
3. Compass surveying is recommended when the area is _______
a) Large, even and crowded with many details
b) Small, undulating and not details are crowded
c) Large, undulating and crowded with many details
d) Small, even and crowded with many details
View Answer
Explanation: Compass surveying is recommended when the area is large, undulating and crowded with many details. It is not recommended for areas where the local attraction is suspected due to the presence of a magnetic substance.
4. In which areas does compass surveying is not recommended?
a) Local attraction suspected areas
b) Large areas
c) Undulating areas
d) Crowded with many details
View Answer
Explanation: Compass surveying is not recommended for areas where the local attraction is suspected due to the presence of a magnetic substance.
5. Which of the following presence is not affected for compass surveying?
a) Steel structures
b) Wooden structures
c) Iron ore deposits
d) Electric cables conveying currents
View Answer
Explanation: Compass surveying is not recommended for areas where the local attraction is suspected due to the presence of magnetic substance like steel structures, iron ore de, electric cables conveying currents.
6. Which of the following term used to denote any influence which prevents the needle from pointing to the north in a given locality?
a) Magnetic bearing
b) Compass deflection
c) Local attraction
d) Magnetic declination
View Answer
Explanation: Local attraction is the term used to denote any influence which prevents the needle from pointing to the north in a given locality.
7. Which of the following is not required in compass surveying?
a) Bearing angles
b) Lengths of lines
c) Triangles
d) Connecting lines
View Answer
Explanation: The principle of compass surveying is traversing which involves a connection of series of lines. Magnetic bearings are measured by compass and lengths are measured by a chain.
8. In Compass traversing length of lines are measured by _______
a) Chain
b) Compass
c) Theodolite
d) Dumpy level
View Answer
Explanation: In Compass traversing, the lengths of lines are measured by a chain and magnetic bearings are measured by compass.
9. In traversing by fast needle method, the magnetic bearings of the lines are measured with a reference so the direction of magnetic meridian established at the ______ station.
a) first
b) second
c) third
d) each station
View Answer
Explanation: The magnetic bearings of traverse lines are measured by a theodolite fitted with a compass. The direction of the magnetic meridian is not established at each station but, the magnetic bearings of the lines are measured with a reference so the direction of magnetic meridian established at the first station.
10. Fast needle method is more accurate than the loose needle method.
a) True
b) False
View Answer
Explanation: In loose needle, method lengths are measured with the chains. In fast needle, method lengths are measured with the 20 or 30 m tapes.
Sanfoundry Global Education & Learning Series – Surveying.
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