AMS 272 UNIT 3 FAA QUESTIONS AND ANSWERS.
LATEST 2025 EXM UPDATE WITH COMPLETE
SOLUTION. ALREADY GRADED A+.
Frequently, an a/craft's auxiliary power unit (APU) generator: Answer- Is identical to the engine-driven
generators
Fuel is normally supplied to an APU from: Answer- The airplane's main fuel supply
An APU is usually rotated during start by: Answer- An electric starter
The function of an APU air inlet plenum is to: Answer- Stabilize the pressure of the air before it enters the
compressor
When in operation, the speed of an APU: Answer- Remains at or near rated speed regardless of the load
condition
Generally, when maximum APU shaft output power is being used in conjunction with pneumatic power:
Answer- Pneumatic loading will be automatically modulated to maintain a safe EGT
When necessary, APU engine cooling before shutdown may be accomplished by: Answer- Closing the bleed
air valve
Usually, most of the load placed on an APU occurs when: Answer- The bleed air valve is opened
Fuel scheduling during APU starts and under varying pneumatic bleed and electrical loads is maintained:
Answer- Automatically by the APU fuel control system
On APU's equipped with a free turbine and load compressor, the primary function of the load compressor is
to: Answer- Provide bleed air for aircraft pneumatic systems
How does the ignition of a gas turbine engine differ from that of a reciprocating engine? Answer- A high-
energy spark is required for ignition
In a turbine engine DC capacitor discharge ignition system, where are the high-voltage pulses formed?
Answer- At the triggering transformer
Why are turbine engine igniters less susceptible to fouling than reciprocating engine spark plugs? Answer-
The high-intensity spark cleans the igniter
LATEST 2025 EXM UPDATE WITH COMPLETE
SOLUTION. ALREADY GRADED A+.
Frequently, an a/craft's auxiliary power unit (APU) generator: Answer- Is identical to the engine-driven
generators
Fuel is normally supplied to an APU from: Answer- The airplane's main fuel supply
An APU is usually rotated during start by: Answer- An electric starter
The function of an APU air inlet plenum is to: Answer- Stabilize the pressure of the air before it enters the
compressor
When in operation, the speed of an APU: Answer- Remains at or near rated speed regardless of the load
condition
Generally, when maximum APU shaft output power is being used in conjunction with pneumatic power:
Answer- Pneumatic loading will be automatically modulated to maintain a safe EGT
When necessary, APU engine cooling before shutdown may be accomplished by: Answer- Closing the bleed
air valve
Usually, most of the load placed on an APU occurs when: Answer- The bleed air valve is opened
Fuel scheduling during APU starts and under varying pneumatic bleed and electrical loads is maintained:
Answer- Automatically by the APU fuel control system
On APU's equipped with a free turbine and load compressor, the primary function of the load compressor is
to: Answer- Provide bleed air for aircraft pneumatic systems
How does the ignition of a gas turbine engine differ from that of a reciprocating engine? Answer- A high-
energy spark is required for ignition
In a turbine engine DC capacitor discharge ignition system, where are the high-voltage pulses formed?
Answer- At the triggering transformer
Why are turbine engine igniters less susceptible to fouling than reciprocating engine spark plugs? Answer-
The high-intensity spark cleans the igniter
