Question

Which device is used to control the quantity of oil circulation and to maintain correct pressure in the lubricating system?

(a) Relief valve

(b) Grease

(c) Crankcase breather

(d) By pass filter

I got this question in an international level competition.

The doubt is from Ignition System of I.C. Engine topic in section Ignition and Power Transmission of Farm Machinery

Answer 1

Right option is (a) Relief valve

The best I can explain: Relief valve is provided to control the quantity of oil circulation and to maintain correct pressure in the lubricating system. The valve consists of a ball, held in place over an opening by an adjustable spring.