Volume 3 - 2014 CDC 2a651s Jet Aircraft
- 1.(401) What is the composition of JP–8 fuel?
- A.
Gasoline and kerosene.
- B.
Gasoline and diesel fuel.
- C.
Diesel fuel and kerosene.
- D.
Diesel fuel and aviation gasoline.
- 2.(401) At room temperature, how many times longer will it take water to settle out of JP–8 than out of gasoline?
- A.
Two.
- B.
Three.
- C.
Four.
- D.
Five.
- 3.(401) Jet aircraft operating at moderately high altitudes increase the fuel system’s susceptibility to an icing condition, further aggravated by the
- A.
Lower viscosity of jet fuels.
- B.
Higher viscosity of jet fuels.
- C.
Lower viscosity of free water.
- D.
Higher viscosity of free water.
- 4.(402) The main fuel control allows the jet engine to safely accelerate, reducing the possibility of
- A.
Flameout.
- B.
Turbine seizure.
- C.
Compressor shift.
- D.
Overtemperature.
- 5.(402) During a visual inspection, how can you tell when a fuel filter is clogged?
- A.
A green flag pops out of the filter.
- B.
Fuel pressure from the fuel pump is low.
- C.
A differential pressure indicator is actuated.
- D.
There is no way to tell without disassembling the filter.
- 6.(403) On a dual-spool, axial-flow engine, what controls thrust production of the engine?
- A.
Regulating engine RPM.
- B.
Regulating compressor discharge pressure.
- C.
Controlling turbine exhaust pressure.
- D.
Controlling turbine inlet temperature.
- 7.(403) During jet engine deceleration, a hydromechanical fuel control schedules fuel flow as a function of
- A.
RPM.
- B.
Inlet temperature.
- C.
Burner pressure.
- D.
Inlet pressure.
- 8.(403) What type of fuel control uses items such as thermocouples, relays, amplifiers, and solenoids to help control a jet engine?
- A.
Pneumatic.
- B.
Fuel injection.
- C.
Hydromechanical.
- D.
Electrohydromechanical.
- 9.(403) Which term describes a jet engine fuel metering device that is really two fuel controls in one component?
- A.
Unified.
- B.
Combined.
- C.
Bimechanical.
- D.
Electrosecondary.
- 10.(403) The F100 UFC senses certain variables from the engine through the use of
- A.
A closed loop design.
- B.
An open circuit design.
- C.
The feedback control unit.
- D.
A direct mechanical connection to all engine sensors.
- 11.(403) If the safety seals on a fuel system component are broken or removed, and you suspect the factory adjustment was altered, you should
- A.
Adjust and reseal the component.
- B.
Keep the component in service to meet the mission.
- C.
Forward the component to the authorized depot for reflow and resealing.
- D.
Continue to keep the component in service if it is documented as a red diagonal on Form 781A, Hydromechanical Fuel Control.
- 12.(403) Calibration and/or adjustment screws that require setting during an engine trim procedure must be
- A.
Replaced.
- B.
Die marked.
- C.
Safety sealed and/or lockwired.
- D.
Treated with a thread locking compound.
- 13.(404) When in the primary mode, what controls the operation of the F100-PW–220 engine?
- A.
MEC.
- B.
PMG.
- C.
TSFC.
- D.
DEEC.
- 14.(404) On an F100-PW–220 engine, the DEEC is cooled by
- A.
Oil.
- B.
Fuel.
- C.
Ram air.
- D.
Hydraulic fluid.
- 15.(404) For actuation of the variable vane systems on an F100-PW–220 engine, the MFC provides both the CIVV and
- A.
Rear compressor variable vane actuators with pneumatic (air) pressure.
- B.
Rear compressor variable vane actuators with fuel pressure.
- C.
Variable exhaust nozzle actuators with pneumatic pressure.
- D.
Variable exhaust nozzle actuators with fuel pressure.
- 16.(404) Which F100-PW–220 engine fuel system component controls pressurization of the core engine fuel system?
- A.
Fuel nozzle.
- B.
P&D valve.
- C.
N2 sensor.
- D.
Tt 2.5 sensor.
- 17.(404) Which stage of compressor air drives the augmenter fuel pump on an F100-PW–220 engine?
- A.
7th.
- B.
10th.
- C.
13th.
- D.
14th.
- 18.(404) On the F100-PW–220 engine, which component controls the augmentor fuel control?
- A.
Fuel pump.
- B.
Fuel pump controller.
- C.
Signature elimination probe.
- D.
DEEC.
- 19.(404) Core engine fuel flow sequence on an F100-PW–220 engine starts at the main fuel pump and then goes through the
- A.
AFP, AFC, fuel/oil cooler, P&D, and fuel nozzles.
- B.
MFC, fuel/oil cooler, P&D, and fuel nozzles.
- C.
AFC, AFP, fuel/oil cooler, P&D, and fuel nozzles.
- D.
Fuel/oil cooler, P&D, MFC, and fuel nozzles.
- 20.(405) When classified as to structure, which of the following is not a type of an oil pump?
- A.
Gear.
- B.
Gerotor.
- C.
Rotogear.
- D.
Sliding vane.
- 21.(405) Which type of oil pump consists of a gear and rotor within a housing?
- A.
Gear.
- B.
Gerotor.
- C.
Rotogear.
- D.
Sliding vane.
- 22.(405) One micron is a metric linear measurement that is equal to
- A.
1/25 inch.
- B.
1/250 inch.
- C.
1/2,500 inch.
- D.
1/25,000 inch.
- 23.(405) Chip detectors have an electrical connection for making which type of check?
- A.
AC high-voltage.
- B.
DC high-voltage.
- C.
Continuity.
- D.
Polarity.
- 24.(405) Which type of valve permits oil flow in only one direction?
- A.
Check.
- B.
Relief.
- C.
Bypass.
- D.
Pressurizing.
- 25.(405) Which type of oil cooler operates on the same principle as a radiator in an automobile?
- A.
Air/oil.
- B.
Fuel.
- C.
Hydraulic.
- D.
Pneumatic.
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