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 sprayers, the Volume Median Diameter (VMD or $D_{v0.5}$) represents:
Options:
(A) The droplet diameter such that $50\%$ of the total spray liquid volume is contained in droplets smaller than this diameter
(B) The arithmetic average diameter of all droplets counted
(C) The diameter of the single largest droplet
(D) The diameter of droplets produced at 1 bar
Answer Key:
A
Step-by-Step Solution & Explanation
VMD divides spray volume equally into two halves: $50\%$ of total liquid volume is in droplets smaller than VMD, and $50\%$ is in larger droplets.