Chain Surveying MCQ with answer and solution

Concept

Calculation of representative fraction for scale

Formula

RF = Map distance / Ground distance

Step-by-step solution

1. Map distance = 0.5 cm. 2. Ground distance = 10 m = 1000 cm. 3. Representative Fraction (RF) = Map distance / Ground distance = 0.5 cm / 1000 cm = 1/2000.

Explanation

The representative fraction is defined as the ratio of map distance to ground distance expressed in identical units of measurement. Converting the ground and map distances according to standard scale ratios produces a representative fraction of 1/2000. This dimensionless scale ratio allows straightforward conversion between map measurements and actual field distances.

Shortcut

Representative Fraction (RF) = Map Distance / Ground Distance (in identical units).

Common mistake

Failing to correctly convert meters to centimeters when calculating the representative fraction ratio.