Subtopic: Functional requirements, principles of working, construction and operation of manual, animal, tractor and renewable energy operated equipment for tillage, sowing, planting, fertilizer application, inter-cultivation, spraying, mowing, chaff cutting, harvesting and threshing
Question Statement:
In agricultural spray application, 'Relative Span' ($RS$) of droplet size distribution is defined as:
Options:
(A) $\frac{D_{v0.9} - D_{v0.1}}{D_{v0.5}}$
(B) $\frac{D_{v0.5}}{D_{v0.1}}$
(C) $D_{v0.9} - D_{v0.1}$
(D) $\frac{D_{v0.9}}{D_{v0.5}}$
Answer Key:
A
Step-by-Step Solution & Explanation
Relative Span quantifies droplet size uniformity; a lower RS indicates a narrower, more uniform droplet spectrum.