Question

At where is the pressure lower when the chemical travels through the rubber hose?

(a) At the discharge part of the power sprayer

(b) At the end of the hose

(c) At the swirl plate

(d) At the spray gun

This question was addressed to me in a national level competition.

My enquiry is from Plant Protection Equipments topic in section Plant Protection Equipments of Farm Machinery

Answer 1

Correct answer is (b) At the end of the hose

The explanation: When the chemical travels through the rubber hose from the power sprayer, the pressure is lower at the end of the hose than at the discharge part of the power sprayer. Such pressure loss is mainly caused by the friction of the moving chemical against the wall of the hose.