APU

Question 1

Primary function of the “LOAD COMPRESSOR” is to

Answer 1

Provide bleed air for aircraft “PNEUMATIC SYSTEM”

Question 2

APU “ENGINE COOLING” before “shut down” may be accomplished by-

Answer 2

“CLOSING THE BLEED AIR VALVE”

Question 3

Function of an “APU” “AIR INLET PLENUM” is to-

Answer 3

Stabilize the “PRESSURE” of the “AIR” before it enters the “COMPRESSOR”

Question 4

When in “OPERATION” the speed of an “APU”

Answer 4

Remains at or near “RATED SPEED” regardless of the “LOAD CONDITION”

Question 5

An “APU” is usually “ROTATED” during “START” by-

Answer 5

An “ELECTRIC STARTER”

Question 6

usually most of the “LOAD” placed on a “APU” occurs when

Answer 6

The “BLEED AIR VALVE” is “OPENED”

Question 7

“FUEL” is normally supplied to an “APU” from-

Answer 7

The “AIR CRAFT” “MAIN FUEL SUPPLY”

Question 8

When maximum APU shaft output power is being used in conjunction with pneumatic power

Answer 8

Pneumatic loading will be automatically modulated to maintain a safe EXHAUST GAS TEMPERATURE

Question 9

Fuel scheduling during APU start and under varying pneumatic bleed and electric loads is maintained

Answer 9

Automatically by the APU fuel control system