Question

The commonly used hydraulic sprayers operating pressure is

• A. $0-1~kg/cm^{2}$
• B. $1-7~kg/cm^{2}$
• C. $8-21~kg/cm^{2}$
• D. More than $21~kg/cm^{2}$

Hint:

Low pressure = Large droplets (less drift). High pressure = Fine mist (better coverage). $1-7~kg/cm^{2}$ is the balanced "sweet spot."

Answer 1

The Correct Option is B

Step 1: Concept Hydraulic sprayers use liquid pressure to atomize the chemical into fine droplets.

Step 2: Meaning The pressure must be sufficient to create a proper spray pattern but low enough to prevent excessive drift or leaf damage.

Step 3: Analysis Most standard knapsack or low-volume hydraulic sprayers used in fields operate in the range of 1 to 7 $kg/cm^{2}$. High-pressure sprayers for orchards may go higher, but $1-7$ is the most common range.

Step 4: Conclusion The common operating pressure is $1-7~kg/cm^{2}$.
Final Answer: (B)