Chain Surveying MCQ with answer and solution

Concept

Link specifications of a metric chain

Formula

NONE

Step-by-step solution

1. Metric surveying chains are manufactured in standard total lengths of 20 m and 30 m. 2. Each individual link in a standard metric chain measures 20 cm (0.2 m) in length. 3. Dividing 20 m by 0.2 m per link yields 100 links in a 20 m chain. Answer: B

Explanation

A standard 20-meter metric surveying chain is divided into 100 equal links made of galvanized steel wire. Each link measures exactly 0.2 meters (or 20 centimeters) from center to center of the connecting rings. Thus, 100 links added together make up the full 20-meter chain length.

Why the other options are wrong

A) A 30 m metric chain contains 150 links, not a 20 m chain. C) A 20 m metric chain is divided into 100 links of 20 cm each. D) A 10 m chain contains 50 links.

Shortcut

20 m chain = 100 links (1 link = 0.2 m or 20 cm).

Common mistake

Confusing the number of links in a 20 m chain (100 links) with a 30 m chain (150 links).