Millwright – Hydraulics and Pumps – Study Guide & Practice Questions

Millwright – Hydraulics and Pumps – Study Guide & Practice Questions


Demulsibility is the ability of oil to

a. absorb into another substance

b. absorb into water

c. separate from water

d. maintain visibility - correct answer ✔✔c. seperate from water



When oxidation of oil takes place

a. oil is formed

b. sludge is formed

c. pour point is dropped

d. slurry is formed - correct answer ✔✔a. sludge is formed



One disadvantage of synthetic based fire resistant fluids is they

a. are expensive

b. are not coded

c. fluid flow is restricted

d. it attacks packing normally used in hydraulic systems - correct answer ✔✔d. it attacks packing
normally used in hydraulic systems



Baffles are used in an oil reservoir chiefly to temporarily ___________ the incoming oil from the
outgoing oil

a. mix

b. seperate

c. add