15.12. Air Systems

Câu 279. Engine anti-ice is taken from the.(Level 1)

• A. Turbine.
• B. H.P compressor.
• C. LP compressor.

Câu 280. In an axial flow turbine engine, compressor bleed air is sometimes used to Aid in cooling the.(Level 1)

• A. Inlet guide vanes.
• B. Turbine, vanes, blades, and bearings.
• C. Fuel.

Câu 281. If air is taken from the compressor for air conditioning or anti-icing.(Level 1)

• A. Thrust will increase EGT will increase.
• B. Thrust will decrease EGT will increase.
• C. Thrust will decrease EGT will decrease.

Câu 282. Turbine case cooling utilizes.(Level 1)

• A. LP compressor air.
• B. Fan air.
• C. H.P compressor air.

Câu 283. Air for anti-icing is taken from the.(Level 1)

• A. Accessory Gearbox.
• B. LP compressor.
• C. H.P compressor.

Câu 284. As air is bled off the engine, EGT will.(Level 1)

• A. Remain constant.
• B. Decrease.
• C. Increase.

Câu 285. The heat absorbed by internal components can be detrimental to thrust and Is prevented by.(Level 1)

• A. Reducing fuel flow to reduce internal temperature.
• B. Bleeding air off the compressor to heat the components.
• C. Bleeding air off the compressor to cool the components.

Câu 286. On a gas turbine engine, thermal wing de-icing system derives air.(Level 1)

• A. Via air from the H.P turbine.
• B. Through a pressure regulating shut-off valve (P.R.S.O.V).
• C. Through a pressure relief system.

Câu 287. The engine air system can be divided into? (Level 1)

• A. 2 subsystems.
• B. 3 subsystems.
• C. 4 subsystems.

Câu 288. Purpose of the compressor control system? (Level 1)

• A. Protects the engine compressors against stall and surge in all operating cnditions and it increases their efficiency.
• B. Optimizes the tip clearance between the rotor blades and the stator casing to increase the engine efficiency.
• C. Makes sure that the internal and external engine components are cooled sufficiently during operation and after engine shut down.