gas turbine lubrication

#1. A centrifugal breather is used on a gas turbine engine:

• ATo circulate the oil smoothly.
• BTo minimise oil loss.
• CTo emulsify the oil and air mixture for greater viscosity.
• DTo allow oxidisation of the oil.

#2. A high oil temperature would indicate that:

• AThe oil pressure was high.
• BThe exhaust gas temperature (E.G.T.) was high.
• CThe oil filter was blocked.
• DThe air intake of the oil cooler was blocked.

#3. Oil seals are pressurised:

• ATo ensure oil is forced into the bearings.
• BTo ensure minimum oil loss.
• CTo ensure that the oil is prevented from leaving the bearing housing.
• DTo minimise heat loss in the bearing housing.