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the resistance of an object to change its motion is a property of matter called...
Inertia
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The ability to do work is the definition of?
Energy
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An aircraft taxiing at a constant speed is an example of...
Newtons First law of motion
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which of newtons laws of motion is the best description of why an operating jet engine produces forward thrust?
Third
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in a jet engine, what meters the fuel for combustion?
Fuel Control
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when the turbine wheel absorbs the full energy,...
The energy returns to the compressor
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what effect does the divergent design of a jet engine diffuser have a pressure?
Increases pressure
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air and gasses flowing through a jet engine require?
Greater velocity EXITING than entering
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when a jet engine uses two or more turbine wheels, what is placed directly in front of each turbine wheel?
Nozzle diaphragm
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a jet engine derives its name from the fact that...
it uses a exhaust gas driven turbine to drive its compressor
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what are the two types of jet engine compressors?
Centrifugal and Axial flow
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After air is drawn into the guide vanes of a centrifugal jet engine compressor, it is subjected to...
rotational and centrifugal forces
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what determines the N2 compressor rotations per minute (RPM) of a dual spool jet engine compressor?
Fuel Control
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What is the purpose of a front mounted fan in an axial flow jet engine compressor?
Increase thrust and send air through the compressor core rotor
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the combustion efficiency of a gas turbine is usually between...
95 and 100 percent
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engine design helps prevent igniter plug fouling by...
directing air around the plug electrode
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what forms the inner and outer surfaces of a annular type combustion chamber?
interlocking stainless steel bands
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feul that accumulates after a failed start or after engine shutdown is...
drained overboard by a drain system
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the three turbine designs used in jet engines are?
impulse, reaction, and reaction-impulse
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on some jets, what secures the turbine bucket in place?
Lock Strips
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the exhaust duct connects the turbine outlet and the...
JET Nozzle
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what is the purpose of the exhaust duct?
Straighten exhaust gas flow
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one common type of variable area orifice used on augmenters is the...
Segmented flap
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what augmenter component creates local turbulence and reduces gas velocity?
FLAMEHOLDER
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which engine type used a lot during the early years of jet engine design is the most basic jet engine turbine design?
TurboJet
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a turbofan engine with a bypass ratio of 3:1 is classified as...
Medium Bypass
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the primary function on a hydromechanical fuel control on a jet engine is to?
Meter the fuel, making certain the engine gets the correct quantity for combustion at all times!
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what type of fuel control uses the thermocouples, relays, amplifiers, and solenoids to help control the engine?
Electro-hydromechanical
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the purpose of a fuel/oil cooler is to...
heat the fuel and cool the oil
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When classified according to structure, which of the following is not a type of an oil pump?
a) Gear
b) Gerotor
c) Rotogear
d) Sliding Vane
Rotogear
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what jet engine oil pump consists of a GEAR AND ROTOR within a housing?
GEROTOR!
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A micron is a metric linear measurement equal to...
1/25,000 of a inch
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the two types of oil coolers used in jet engine oil systems are air/oil and....
Fuel/Oil
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what do you use to create a static seal between two stationary parts in the oil system?
Gasket
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what engine component must be rotated to a predetermined speed in order for a jet engine starter to be considered effective?
Compressor
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The air turbine (impingement) starter used on jet engines...
Has the advantages of less weight and fewer moving parts than other starters
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The cartridge-pneumatic starter is a gas driven turbine wheel coupled to the engine through a reduction gear system and...
an overrunning clutch
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in a gearbox type starter system, what transmits the torque supplied by the jet fuel starter (JFS) to the engine gearbox?
Power takeoff (PTO) shaft
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what jet engine alternating current (AC) ignition system unit develops 20,000 volts delivered to the igniter plugs?
Transformer
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A simple direct current (DC) ignition system consists of?
Vibrator, Igniter plugs, and Transformer
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Jet engine tachometer gauges are calibrated in percent of?
Maximum RPM's
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the purpose of the jet engine pressure ratio (EPR) indicating system is to give a reference to the engines...
Available thrust output
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Exhaust gas temperature (EGT) indicators indicate the engines EGT in....
Degrees Celsius
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the three benefits of the Joint Oil Analysis Program (JOAP) are improved safety, reduced maintenance cost, and....
increased equipment availability
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through the use of spectrometric oil analysis, aircraft will have a higher in-commission rate because there will be...
Less unnecessary maintenance
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At a minimum, what should you wear while taking an oil sample?
Gloves and Goggles
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What indicates lubricant system contamination by dirt and sand?
An increase in SILICON
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What form must you fill out and submit to the non-destructive inspections (NDI) laboratory with all oil samples?
DD form 2026
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