Volume 3 - 2014 CDC 2a651s Jet Aircraft

110 Questions | By AustinCope | Updated: Mar 21, 2022 | Attempts: 267

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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.