Subtopic: Calculation of performance parameters – field capacity, efficiency, performance index, application rate and losses
Question Statement:
In pesticide spray droplet characterization, if the Volume Median Diameter (VMD) is equal to the Number Median Diameter (NMD), the spray droplet spectrum is said to be:
Options:
(A) Polydisperse
(B) Monodisperse
(C) Bimodal
(D) Skewed
Answer Key:
B
Step-by-Step Solution & Explanation
The ratio $VMD / NMD$ is the uniformity coefficient of the droplet spectrum. When $VMD = NMD$, the uniformity ratio is 1.0, indicating that all droplets are of identical size, which defines a perfectly monodisperse spray.