# Surveying Questions and Answers – Introduction – Well Conditioned Triangle

This set of Surveying online test focuses on “Introduction – Well Conditioned Triangle”.

1. A line which joins subsidiary stations on the main line is called _____
a) Tie line
b) Survey lines
c) Base lines
d) Check lines

Explanation: Check lines or proof lines are the lines which are run in the field to check the accuracy of the work. A Tie line is a line which joins subsidiary or tie stations on the main line.

2. In which type of surveying only linear measurements are made?
a) Contouring
b) Chain surveying
c) Theodolite surveying
d) Dumpy level

Explanation: Chain surveying is the type of surveying in which only linear measurements are made in the field. This type of surveying is suitable for surveys of small extent on open take simple details.

3. A survey station is prominent on the chain line and can be either at the beginning of the chain or at the end. Such stations are known as ______
a) Main station
b) Tie station
c) Subsidiary station
d) Intermediate station

Explanation: However, subsidiary or tie station can also be selected anywhere on the chain line and subsidiary or tie lines may be run through them. A survey station is prominent on the chain line and can be either at the beginning of the chain or at the end. Such stations are known as the main station.

4. What is laid by joining the apex of the triangle to any point on the opposite side or by joining two points on any two sides of a triangle?
a) Check line
b) Base line
c) Tie line
d) Survey line

Explanation: Check line is laid by joining the apex of the triangle to any point on the opposite side or by joining two points on any two sides of a triangle. Each triangle must have a check line.

5. The accuracy in the location of the objects depends upon the accuracy in laying the ________
a) Check line
b) Base line
c) Tie line
d) Survey line

Explanation: Tie line is a line which joins subsidiary or tie stations on the main line. The accuracy in the location of the objects depends upon the accuracy in laying the tie line.
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6. Survey stations must be mutually visible to obtain a good system of line.
a) True
b) False

Explanation: Surveyor and assistant must be visible to each other. So, survey stations must be mutually visible.

7. In case, to get a well-proportioned or well-shaped triangle, no angle should be less than _________
a) 15°
b) 30°
c) 45°
d) 25°

Explanation: If it is less than 30° then the chance of error increases in triangulation.

8. Each triangle or portion of a skeleton must be provided with sufficient tie lines to obtain good system of lines.
a) True
b) False

Explanation: Each triangle or portion of a skeleton must be provided with sufficient check lines to obtain good system of lines.

9. As far as possible, the main survey line should not pass through _____
b) Check line
c) Obstacles
d) Tie line

Explanation: Always to obtain a good system of survey lines, main survey line should not pass through obstacles. It can pass through road if necessary.

10. Check lines should form well-conditioned triangles to obtain a good system of survey lines.
a) True
b) False

Explanation: Main lines should form well-conditioned triangles to obtain a good system of survey lines. Each triangle or portion must be provided with sufficient check lines.

Sanfoundry Global Education & Learning Series – Surveying.

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