Air Tech- Lubrication and Cooling

What would happen without oil for lubrication?

• Extremely high temperatures from friction forces

• Fuel pressure would reduce to a minimum

• The valves wouldn't have enough pressure to open and close

• Power settings would have to be set lower than normal

How does oil cool and clean the engine?

• passing through the oil cooler and scavenger pump

• passing through the oil cooler and oil filter

• passing through the refrigerator pump and oil filter

• passing through the refrigerator put and maintenance sump

An oil that flows slowly is said to have what type of viscosity?

• high

• low

What happens to the viscosity of oil as it increases in temperature?

• increases

• reduces

An SAE of 50 would give a commercial aviation grade of ___

• 10

• 25

• 60

• 100

Which statement is incorrect?

• A wet sump has a seperate reservoir tank

• A dry sump is better than wet sump for aerobatic aircraft

• The pressure relief valve is located on the engine side of the oil pump

• An oil-filter bypass valve will operate if filter becomes blocked

A scavenge pump and oil tank is found in what kind of oil system?

• wet sump

• dry sump

Oil below the minimum level could cause:

Select all that apply

• a low oil temperature

• a high oil temperature

• a high oil pressure

• a low oil pressure

Likely results from a low oil pressure?

Select all that apply

• faulty pressure relief gauge

• oil pump broken

• low oil quality

• faulty oil pressure gauge

What could a high oil temperature indicate alone?

• overheating of the engine

• high oil quantity

• low oil quantity

• faulty pressure relief gauge