2A651 Ure (All Volumes Mix)
Settings
- 1.
- A.
Silicone
- B.
Carbon
- C.
Synthetic
- D.
Labyrinth
- 2.
- A.
Operations Support Center
- B.
Logistics Support Squadron
- C.
Operations Support Squadron
- D.
Maintenance Operations Center
- 3.
- A.
Dry sump
- B.
Wet sump
- C.
Cold tank
- D.
Hot tank
- 4.
- A.
Turbine
- B.
Diffuser
- C.
Compressor
- D.
Combustion
- 5.On an F100-PW–220 engine, what component permits oil to bypass the oil filter during cold weather starts?
- A.
Oil relief valve
- B.
Filter poppet valve
- C.
Oil pressure transmitter tap
- D.
Filter assembly bypass valve
- 6.
- A.
24
- B.
36
- C.
48
- D.
60
- 7.
- A.
Wear metals
- B.
Friction metals
- C.
Precious metals
- D.
Transformation metals
- 8.
- A.
Using only the energy expended through the exhaust nozzle to propel the aircraft forward
- B.
Using the same working fluid for propulsive force as that used within the engine
- C.
Accelerating a large mass of air through a small velocity change
- D.
Moving a small quantity of air through a large velocity change
- 9.Under what condition would you not receive an OAP laboratory sample report?
- A.
The sample is the first taken after an oil change
- B.
The aircraft is on TDY
- C.
It was a special oil sample
- D.
The results are normal
- 10.Air Force occupational safety and health (AFOSH) standards are located within Air Force publication series
- A.
91
- B.
66
- C.
127
- D.
161
- 11.
- A.
Inverter
- B.
Capacitor
- C.
Generator
- D.
Transformer
- 12.On an average, what percent of all the energy produced by the fuel is required to maintain the engine operating cycle?
- A.
50
- B.
60
- C.
70
- D.
80
- 13.
- A.
One
- B.
Two
- C.
Three
- D.
Five
- 14.Vane-type fuel pumps used in jet engines are similar to
- A.
Sliding-vane air compressors
- B.
Piston pump air compressors
- C.
Roots air compressors
- D.
Turbo-superchargers
- 15.
- A.
Full Authority Digital Electronic Control (FADEC)
- B.
Gearbox Mounted Accessory Drive (GMAD)
- C.
Power Unit Accessor Drive (PUAD)
- D.
Nacelle Interface Unit (NIU)
- 16.
- A.
Safety
- B.
Hospital
- C.
Supervisor
- D.
Environmental
- 17.
- A.
Can
- B.
Annular
- C.
Can-annular
- D.
Restricted flow
- 18.Fuel that accumulates after a failed start is
- A.
Returned to the fuel control by tubes
- B.
Drained overboard by a drain system
- C.
Burned on the next start attempt
- D.
Allowed to evaporate
- 19.Discharge air used for aircraft engine anti-icing to heat-critical areas is taken from which engine area?
- A.
Compressor
- B.
Combustion
- C.
Augmentor
- D.
Turbine
- 20.
- A.
Priority Monitor Report (D18)
- B.
Daily Document Register (D04)
- C.
Due-out Validation Listing (M30)
- D.
Repair Cycle Asset Management Listing (D23)
- 21.
- A.
Transient vibration
- B.
Partial loss of lubrication
- C.
Complete loss of lubrication
- D.
Stall condition over temperature
- 22.
- A.
Ohm’s law
- B.
Bernoulli’s law
- C.
Newton’s first law
- D.
Newton’s third law
- 23.The purpose of the exhaust duct is to
- A.
Swirl exhaust gas-flow
- B.
Equalize exhaust gas-flow
- C.
Straighten exhaust gas-flow
- D.
Modulate exhaust gas-flow
- 24.An F110-GE–129 engine contains how many stages of VSV?
- A.
2
- B.
3
- C.
5
- D.
7
- 25.The “fir tree” method of attaching turbine blades (buckets) to the turbine rotor disc is preferred because
- A.
Of the temperature differential between the turbine rotor disc and the blades
- B.
It aids in preventing horizontal movement of the blades
- C.
There is more blade tip shake during engine operation
- D.
It aids in preventing axial movement of the bucket
- 26.
- A.
2
- B.
3
- C.
4
- D.
6
- 27.
- A.
2
- B.
3
- C.
4
- D.
5
- 28.The F100 engine augmentor’s primary nozzle actuator is driven by cables from the
- A.
T5 amplifier
- B.
Unified control
- C.
Afterburner fuel control
- D.
Convergent exhaust nozzle control
- 29.Serviceable items, when received from supply and ready to use, each have an attached Department of Defense (DD) Form
- A.
1574
- B.
1575
- C.
1577-2
- D.
1577-3
- 30.Compressor section failure from a chain reaction due to blade-to-blade and blade-to-vane interference is known as
- A.
Circumferential force
- B.
Centrifugal force
- C.
Centripetal force
- D.
Centrifuge force
- 31.On the 54H60–117 propeller, which component delivers the actual propeller blade angle from the blade to the control assembly?
- A.
Microadjusting ring
- B.
Beta feedback shaft
- C.
Blade segment gear
- D.
Blade bushing
- 32.The reduction gearbox on an F100–PW–220 engine reduces speed between the main fuel gear pump and the engine-driven main gearbox by
- A.
45%
- B.
33%
- C.
46%
- D.
52%
- 33.On the 54H60–117 propeller, which dome assembly part allows the rotating cam to turn while the stationary cam remains in a fixed position?
- A.
Roller shaft
- B.
Track slopes
- C.
Ball bearings
- D.
Roller bearings
- 34.
- A.
Shelf-life
- B.
Bench stock
- C.
Hazardous materials
- D.
Equipment authorization inventory data
- 35.On the 54H60–117 propeller, which pump(s) is/are used during propeller static operation?
- A.
Main pressure
- B.
Main scavenge
- C.
Standby pressure and main scavenge
- D.
Auxiliary pressure and auxiliary scavenge
- 36.On the T56 turboprop engine, there are mounting pads on the aft side of the accessory drive for the fuel control, fuel pump, and
- A.
Speed-sensitive valve
- B.
Engine main oil pump
- C.
Speed-sensitive control
- D.
External scavenge oil pump
- 37.On the 54H60–117 propeller, which valve connects the main, standby, and auxiliary pressure pumps’ output to the increase pitch lines during negative torque conditions?
- A.
High pressure relief
- B.
Feather actuating
- C.
Feather
- D.
Pilot
- 38.A cold compressor stall that occurs at low revolutions per minute (rpm) and is accompanied by a slight over temperature is called
- A.
An incipient
- B.
A thermal
- C.
A partial
- D.
A mild
- 39.
- A.
00-5-2
- B.
00-5-1
- C.
00-20-1
- D.
00-20-2
- 40.On the 54H60–117 propeller, when the backup valve is opened, the hydraulic pressure routed to the governor pilot valve is used for which operation?
- A.
Pitchlock
- B.
Standby
- C.
Reverse
- D.
Airstart
- 41.Torque is transferred from the power unit to the safety coupling on the reduction gearbox (RGB) by the
- A.
Torque shaft
- B.
Reference shaft
- C.
Torquemeter housing
- D.
Compressor extension shaft
- 42.On the 54H60–117 propeller, which type of valve opens to allow the output of the standby pump to combine with the output of the main pump?
- A.
Check
- B.
Bypass
- C.
Low pressure relief
- D.
High pressure relief
- 43.
- A.
Safety
- B.
Urgent action
- C.
Routine action
- D.
Immediate action
- 44.On the 54H60–117 propeller, what forces the stop levers on the low pitch stop to move outward?
- A.
Hydraulic pressure
- B.
Movable wedge
- C.
Dome piston
- D.
Servo valve
- 45.The purpose of the turbine section is to convert
- A.
Energy into torque
- B.
Kinetic energy into airflow
- C.
Airflow into potential energy
- D.
Torque into mechanical energy
- 46.During what inspection phase are operational checks made according to the technical order (TO)?
- A.
Fix
- B.
Look
- C.
Pre-inspection
- D.
Post-inspection
- 47.Constant speed can only occur when the throttle is positioned from
- A.
RVS to FLT IDLE
- B.
RVS to GND IDLE
- C.
GND IDLE to FLT IDLE
- D.
FLT IDLE to TAKE OFF
- 48.The primary goal of the engine trending and diagnostics (ET&D) program is to prevent or limit damage to turbine engines by
- A.
Reviewing past engine accident investigation reports
- B.
Tracking serially controlled components and modules
- C.
Early detection of performance degradation and/or failures
- D.
Documenting engine overspeed and overtemperature conditions
- 49.In the beta range of the 54H60–117 propeller, which cam increases the speeder spring tension?
- A.
Beta set
- B.
Speed set
- C.
Backup valve
- D.
Beta follow-up
- 50.The T700 engine has a modular concept that allows for the replacement of entire
- A.
Motors
- B.
Systems
- C.
Subsystems
- D.
Components
- 51.During an underspeed condition on the 54H60–117 propeller, what moves the pilot valve?
- A.
Decreased hydraulic pressure
- B.
Increased hydraulic pressure
- C.
Speeder spring
- D.
Flyweights
- 52.Depot level support includes depot field teams (DFT) and
- A.
Contract field teams (CFT)
- B.
Base jet engine run crews (BJERC)
- C.
Oil analysis teams (OAT)
- D.
Slide engineer team (SET)
- 53.During the 54H60–117 propeller feathering operation, which valve blocks off the standby pump output and causes hydraulic pressure to increase?
- A.
Feather
- B.
Standby check
- C.
Feather solenoid
- D.
Feather actuating
- 54.
- A.
Test cell run procedures
- B.
Unit serial number listings
- C.
Periodic inspection checklists
- D.
Monthly requirements listings
- 55.Power to drive the accessory gearbox (AGB) on the F108 engine is transmitted from the
- A.
Fan major module
- B.
Accessory major module
- C.
Core engine major module
- D.
Low-pressure turbine (LPT) major module
- 56.On the 54H60–117 propeller, what is the minimum psi required to release the feather latches and allow the piston to move forward?
- A.
200
- B.
400
- C.
600
- D.
800
- 57.
- A.
Prevent unscheduled removal of engines
- B.
Accelerate the flying rate of all the unit’s installed engines
- C.
Determine distress modes of an engine and its subsystems in the field
- D.
Identify engines requiring time compliance technical order (TCTO) maintenance
- 58.
- A.
Propeller governor control
- B.
Synchrophaser disarming
- C.
Prop resynchrophase
- D.
Synchrophase master
- 59.
- A.
20
- B.
50
- C.
80
- D.
90
- 60.The master synchrophaser board located in the synchrophaser unit contains a master channel and a slave channel used by propellers
- A.
No. 1 and No. 2
- B.
No. 2 and No. 3
- C.
No. 3 and No. 4
- D.
No. 1 through 4
- 61.
- A.
Your pocket
- B.
Ziploc bag
- C.
Parts bag
- D.
Tool bag
- 62.
- A.
1
- B.
2
- C.
3
- D.
4
- 63.
- A.
First and third
- B.
First and second
- C.
Second and third
- D.
Third and fourth
- 64.Before operating an engine at the test cell, you must always check its status as indicated on the
- A.
Crew chief’s log book of maintenance performed
- B.
Maintenance log book
- C.
Engine forms
- D.
Aircraft forms
- 65.When used for ground operation, the SGT engine can be installed on
- A.
Pods
- B.
An H-frame
- C.
A two-wheel trailer
- D.
A four-wheel trailer
- 66.If you must torque a sequence of three or more bolts,
- A.
Use maximum torque
- B.
Torque from left to right
- C.
Use a staggered sequence
- D.
Overtorque, loosen, and retorque
- 67.
- A.
Wet
- B.
Dry
- C.
Hot
- D.
Cold
- 68.On an F100–PW–220 engine, the No. 2 bearing package is housed in the
- A.
Compressor intermediate case
- B.
Combustion case
- C.
Fan inlet case
- D.
Diffuser case
- 69.During a normal start on a GTCP 165 engine, the igniter plug continues firing until engine rotation in rpm reaches
- A.
75%
- B.
80%
- C.
95%
- D.
100%
- 70.If the input into the Fluke 8025A meter is over the range being used, what will the digital display show?
- A.
OL
- B.
OR
- C.
COM
- D.
OFF
- 71.The modulating and shutoff valve on a GTCP 165 engine will be fully open at what percent rpm?
- A.
60%
- B.
70%
- C.
80%
- D.
90%
- 72.
- A.
2
- B.
3
- C.
4
- D.
5
- 73.On a GTCP 165 engine, air for the load control system is extracted from the
- A.
Torus
- B.
Combustor
- C.
Turbine plenum
- D.
Compressor deswirl vanes
- 74.Engines are mounted in the fixed test cell on a thrust stand or are suspended
- A.
By cargo straps
- B.
From a cradle mount
- C.
By a tailhook adapter
- D.
On the model 4100 trailer
- 75.When operating a borescope, what part of the borescope illuminates the interior of the area you’re inspecting?
- A.
Control unit
- B.
Light guide tube
- C.
Distal tip light guides
- D.
Bending section lever
- 76.If you encounter engine trouble where more than one unit is at fault, you would first
- A.
Go back and check engine forms again
- B.
Replace all the units suspected to be at fault
- C.
Try to repair the more complex unit on the spot
- D.
Examine the unit that requires the least amount of time to replace
- 77.
- A.
16
- B.
20
- C.
24
- D.
28
- 78.
- A.
Data collection unit (DCU)
- B.
Digital Electronic Control (DEC)
- C.
Engine analyzer unit (EAU)
- D.
Supervisory control system (SCS)
- 79.
- A.
Tapered
- B.
Flathead
- C.
Cotter
- D.
Shear
- 80.An understanding of the operating principles of engine instruments will help you decide
- A.
If an engine should be removed from an aircraft
- B.
If the engine should be sent to the test cell
- C.
The meanings of the instrument readings
- D.
What tools are required for maintenance
- 81.
- A.
Gasoline and kerosene
- B.
Gasoline and diesel fuel
- C.
Diesel fuel and kerosene
- D.
Diesel fuel and aviation gasoline
- 82.Two units that work together to indicate the oil system is operating correctly are the oil pressure
- A.
Relief valve and indicator
- B.
Transmitter and indicator
- C.
Relief valve and transmitter
- D.
Synchronous unit and indicator
- 83.
- A.
Engine oil
- B.
Dry nitrogen
- C.
A leak detector
- D.
A soap-water solution
- 84.On engines with afterburners, the position of the exhaust nozzle is converted into an electrical signal by a
- A.
Rheostat
- B.
Rectifier
- C.
Transducer
- D.
Transformer
- 85.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
- 86.The term Pt2 means the
- A.
Total (t) pressure (P) at flange 2 (2)
- B.
Total (t) pressure (P) at station 2 (2)
- C.
Temperature (t) and pressure (P) at flange 2 (2)
- D.
Temperature (t) and pressure (P) at station 2 (2)
- 87.Engines inactive for over 180 days must have what accomplished?
- A.
Motor the engine to circulate the oil
- B.
Inspect reservoirs to ensure they are full
- C.
Visually inspect compressor for corrosion
- D.
Preservation run and fuel system preservation
- 88.The direct oil pressure gauge on a test cell is connected to an engine oil pressure line to indicate oil pressure without using wiring, indicator, or
- A.
Aircraft transformer
- B.
Engine transformer
- C.
Aircraft transmitter
- D.
Engine transmitter
- 89.
- A.
TD valve
- B.
Fuel control
- C.
TD control
- D.
Fuel nozzle
- 90.During vibration analysis, frequency is usually measured in
- A.
Mils
- B.
Phase lags
- C.
Cycles per second
- D.
Phases per second
- 91.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.
Applied a thread locking compound
- 92.When you are using a vibration analyzer, you will be notified when a preset signal has been exceeded by
- A.
A horn alarm
- B.
Flashing red lights
- C.
The sound of a buzzer
- D.
Flashing channel indicator LED
- 93.In what position must the TD valve switches be placed in order to make the T56 engine fuel trimming system inoperative?
- A.
OFF
- B.
NULL
- C.
AUTO
- D.
LOCKED
- 94.Prior to starting the engine when doing an anti-ice valve operational check on an F–16C/D, place the anti-ice engine switch to
- A.
ON
- B.
OFF
- C.
START
- D.
MANUAL
- 95.
- A.
I
- B.
III
- C.
V
- D.
VI
- 96.
- A.
Air inlet modules
- B.
Observation ports
- C.
Air exhaust modules
- D.
High-grade steel panels
- 97.
- A.
Gear
- B.
Gerotor
- C.
Rotogear
- D.
Sliding Vane
- 98.After running an engine in augmentation in the hush house, the augmentor tube is cooled by running the engine at idle for a period of
- A.
1 minute
- B.
3 minutes
- C.
6 minutes
- D.
5 minutes
- 99.
- A.
Bernoulli’s principle
- B.
Newton’s first law of motion
- C.
Ohms Law
- D.
Newton’s third law of motion
- 100.
- A.
TF39-1C
- B.
F100-GE-129
- C.
F100-PW-220
- D.
F100-PW-229
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