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2a651 Eoc Practice Test All Volumes

120 Questions  I  By AerospacePropulsion
2A651 EOC Practice Test All Volumes
2A651 EOC Practice Test

  
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1.  (217) The purpose of an augmentor (afterburner) in a jet engine is to
A.
B.
C.
D.
2.  (027) Which is not a Lead the Fleet/Pacer program objective?
A.
B.
C.
D.
3.  (215) Why is the “fir tree” method of attaching turbine blades (buckets) to the turbine rotor disc preferred?
A.
B.
C.
D.
4.  (412) What AE2100D3 component drives the PGB lube and scavenge pump?
A.
B.
C.
D.
5.  (825) A portable test cell is not equipped with a
A.
B.
C.
D.
6.  (819) When checking the turbine section, you do not measure
A.
B.
C.
D.
7.  (433) Once the cooling airflow has done its job of cooling the turbine section, where does it go?
A.
B.
C.
D.
8.  (618) On an GTCP165 engine, turbine discharge temperature is controlled by the
A.
B.
C.
D.
9.  (438) One type of aerodynamic blockage thrust reverser uses
A.
B.
C.
D.
10.  (614) What R391 Dowty propeller assembly part provides an aerodynamic faring over the aft section of the hub?
A.
B.
C.
D.
11.  (608) On the 54H60–91 propeller, which component is the primary electrical ground for energizing the feather override holding coil?
A.
B.
C.
D.
12.  (004) Prior to starting any maintenance on the aircraft, what can you do to ensure that it is safe to proceed?
A.
B.
C.
D.
13.  (413) The valve that allows fluid to flow in only one direction is the
A.
B.
C.
D.
14.  (001) When you are assigned to an aircraft maintenance squadron as an engine troop, to what flight will you most likely be assigned?
A.
B.
C.
D.
15.  (415) Who is responsible for ensuring that the OAP operates properly?
A.
B.
C.
D.
16.  (834) Which one is not an inspection phase?
A.
B.
C.
D.
17.  (035) The type of borescope that uses miniature TV camera images is a
A.
B.
C.
D.
18.  (423) The JFS is basically a
A.
B.
C.
D.
19.  (616) For the R391 Dowty propeller, what component provides blade angle feedback to the FADEC by two RVDT?
A.
B.
C.
D.
20.  (027) What is the purpose of the Lead the Fleet/Pacer programs?
A.
B.
C.
D.
21.  (003) Occupational health is regulated by Air Force series
A.
B.
C.
D.
22.  (813) The two types of transducers used to measure vibration are
A.
B.
C.
D.
23.  (810) The pressures used in the operation of the engine pressure ratio (EPR) system are the
A.
B.
C.
D.
24.  (211) In a dual-spool compressor, rpm of the N2 compressor are determined by the
A.
B.
C.
D.
25.  (228) Which components comprise the torquemeter assembly?
A.
B.
C.
D.
26.  (214) Three types of turbine and vane assemblies used in jet engines are impulse, reaction, and
A.
B.
C.
D.
27.  (220) Which type of defect appears on bearings as a result of bearing parts striking together?
A.
B.
C.
D.
28.  (608) On the 54H60–91 propeller, which valve is a backup in case the feather valve fails during feathering operation?
A.
B.
C.
D.
29.  (210) The forward end of the shaft on a centrifugal compressor is hollow in order to
A.
B.
C.
D.
30.  (206) To measure barometric pressure, you would use a
A.
B.
C.
D.
31.  (004) To avoid the engine exhaust blast, what is the minimum distance in feet to the rear of the aircraft?
A.
B.
C.
D.
32.  (832) Defects (such as cracks) that appear on the combustion chamber are aggravated by
A.
B.
C.
D.
33.  (026) To document information concerning the status of engine TCTO, use AFTO Form
A.
B.
C.
D.
34.  (832) Defects (such as cracks) found during combustion chamber borescope inspections
A.
B.
C.
D.
35.  (603) What component in the T56 engine coordinator provides reference signals to the electronic TD amplifier that are proportional to the desired TIT?
A.
B.
C.
D.
36.  (825) Which test cell noise suppressors use water to cool the exhaust gases?
A.
B.
C.
D.
37.  (608) As the 54H60–91 propeller feathers, the output of which pump decreases (drops off)?
A.
B.
C.
D.
38.  (023) When a CIRF ships a replacement asset to a deployed unit, who is responsible for ensuring all appropriate documentation is completed?
A.
B.
C.
D.
39.  (007) Hazardous waste storage areas must prevent
A.
B.
C.
D.
40.  (404) On the F100-PW–220 engine, which component controls the augmentor fuel control?
A.
B.
C.
D.
41.  (831) During an inspection, compressor blade defects that are within limits are
A.
B.
C.
D.
42.  (438) What are the two types of thrust reversers?
A.
B.
C.
D.
43.  (201) “An unbalanced force on a body produces or tends to produce an acceleration in the direction of the force and that the acceleration, if any, is directly proportional to the force and inversely proportional to the mass of the body.” This statement is
A.
B.
C.
D.
44.  (421) What component monitors the AE2100D3 ignition exciters spark rate?
A.
B.
C.
D.
45.  (033) The Fluke 8025A multimeter control that is used to set the meter to check for AC and DC is the
A.
B.
C.
D.
46.  (008) Selected equipment items, when returned to depot because of their design characteristics function or application, are predetermined to require
A.
B.
C.
D.
47.  (812) What kind of engine vibration does not persist, but comes and goes?
A.
B.
C.
D.
48.  (605) On the 54H60–91 propeller, the function of the low pitch stop is to prevent the
A.
B.
C.
D.
49.  (408) When an engine is not operating, static preload for a carbon oil seal is provided by
A.
B.
C.
D.
50.  (245) On an F100–PW–220 engine, the gearbox module is driven by the rear compressor through
A.
B.
C.
D.
51.  (232) The purpose of the guide vane support is to direct airflow
A.
B.
C.
D.
52.  (020) An AFTO IMT 22 is not submitted for
A.
B.
C.
D.
53.  (041) Preservation of a component being shipped is required when it is being returned to depot or stored for more than how many days?
A.
B.
C.
D.
54.  (248) Which bearing compartment is contained in the intermediate case of the F119–PW–100 engine?
A.
B.
C.
D.
55.  (223) On an F108 engine, the radial drive shaft connects the core engine to the
A.
B.
C.
D.
56.  (609) On the 54H60–91 propeller speed bias motor, when the control winding voltage is different from the reference-winding voltage, what results?
A.
B.
C.
D.
57.  (405) The F108 engine fuel pump contains a low-pressure stage (centrifugal boost stage) and a high-pressure
A.
B.
C.
D.
58.  (019) How can you tell when the text or a picture in a TO has been changed?
A.
B.
C.
D.
59.  (801) All of the options listed below are proper troubleshooting practices except
A.
B.
C.
D.
60.  (618) The impeller wheel and two turbine wheels in the turbine section of the GTCP165 engine are connected by
A.
B.
C.
D.
61.  (830) What information is used as an aid in test facility inspections?
A.
B.
C.
D.
62.  (442) On an F110-GE–129 augmentor variable nozzle, uniform movement and geometric stability of the nozzle is provided by
A.
B.
C.
D.
63.  (413) Bleed air flowing through which component increases airflow through the cooler?
A.
B.
C.
D.
64.  (028) What would you use to hold your tools when you cannot locate your toolbox within arm’s reach?
A.
B.
C.
D.
65.  (439) How many linear hydraulic actuators are used to deploy and stow the fan thrust on the F117-PW–100 engine?2.
A.
B.
C.
D.
66.  (613) On the 54H60–91 propeller, propeller balancing is not required if the propeller imbalance is at or below what level?
A.
B.
C.
D.
67.  (613) To calculate the required weight change when you use the 192A spectrum analyzer, you will need to plot the data on a
A.
B.
C.
D.
68.  (005) Who has overall responsibility for the FOD program?
A.
B.
C.
D.
69.  (807) The two primary units of the tachometer indicating system are the tachometer generator and tachometer
A.
B.
C.
D.
70.  (036) Proper bolt length allows a minimum of how many threads protruding the nut?
A.
B.
C.
D.
71.  (203) Which section of a jet engine keeps the compressor rotating?
A.
B.
C.
D.
72.  (235) Primary airflow in the F108 engine is through all of the following components except the
A.
B.
C.
D.
73.  (405) Operational control of the F108-CF–100 engine is achieved by the use of the power lever, fuel shut-off lever, and
A.
B.
C.
D.
74.  (210) A constructional feature of the centrifugal compressor is that the impeller
A.
B.
C.
D.
75.  (006) During flightline and test cell operations, you may be exposed to
A.
B.
C.
D.
76.  (418) The slide-type resistor in the EGT circuit is used to
A.
B.
C.
D.
77.  (612) On the 54H60–91 propeller, to avoid being crushed after removing the dome shell during dome piston seal replacement, you should keep your fingers away from the
A.
B.
C.
D.
78.  (219) The bearing removal tools that are most commonly used include
A.
B.
C.
D.
79.  (047) On the personnel maintenance platforms, the purpose of the platform safety lockpins is to
A.
B.
C.
D.
80.  (604) On the 54H60–91 propeller, when the backup valve is opened, the hydraulic pressure routed to the governor pilot valve is used for which operation?
A.
B.
C.
D.
81.  (230) Which T56 compressor component supports the compressor rear bearing labyrinth seal?
A.
B.
C.
D.
82.  (827) The portable test cell is not equipped with a
A.
B.
C.
D.
83.  (230) What type of bearings support the T56 compressor rotor at the front and rear?
A.
B.
C.
D.
84.  (611) When you perform a static blade transition check and abnormal noises are detected, the 54H60–91 propeller must be returned to depot. What AFTO form must be documented and accompany the propeller back to depot?
A.
B.
C.
D.
85.  (806) Two units that work together to indicate that the oil system is operating correctly are the oil pressure
A.
B.
C.
D.
86.  (610) To reduce the noise and vibration levels, synchrophasing mode of governing maintains all the propellers at
A.
B.
C.
D.
87.  (424) On the F–15 secondary power system, what is used to stop the JFS starting cycle when the aircraft engine has accelerated to starter cutout speed?
A.
B.
C.
D.
88.  (834) During what inspection phase are operational checks made according to the technical order (TO)?
A.
B.
C.
D.
89.  (019) Which TO covers information concerning the Air Force TO system?
A.
B.
C.
D.
90.  (832) On a disassembled engine, a visual inspection of the combustion chamber is preferred over a borescope inspection because
A.
B.
C.
D.
91.  (419) Which unit of an AC ignition system develops 20,000 volts?
A.
B.
C.
D.
92.  (239) On the F108 engine, what connects the IGB to the TGB bevel gears?
A.
B.
C.
D.
93.  (816) The engine remote trimmer enables you to adjust the
A.
B.
C.
D.
94.  (614) What R391 Dowty propeller component translates piston and shaft movement to vary propeller blade angle?
A.
B.
C.
D.
95.  (405) On an F108-CF–100 engine, the fuel injectors contain
A.
B.
C.
D.
96.  (623) The modulating and shutoff valve on a GTCP165 engine will be fully open at what percent rpm?
A.
B.
C.
D.
97.  (601) On the 54H60–91 propeller, what function is a task of the low pitch stop assembly?
A.
B.
C.
D.
98.  (812) What type of vibration causes unnecessary engine removals and unwarranted repairs?
A.
B.
C.
D.
99.  (009) What does a completed AFTO Form 350 serve to identify?
A.
B.
C.
D.
100.  (023) Who maintains accountability of CIRF assets and reports their status?
A.
B.
C.
D.
101.  (608) On the 54H60–91 propeller, when feathering the propeller, what acts on the mechanical linkage to open the feather actuating valve?
A.
B.
C.
D.
102.  (044) How many pins secure the adapters to the shipping container support?
A.
B.
C.
D.
103.  (821) How many primary air silencers are there on aircraft noise suppressors to help reduce turbine whine?
A.
B.
C.
D.
104.  (407) Which T56 engine component sends the fuel to the fuel manifold?
A.
B.
C.
D.
105.  (041) The shroud-type cover consists of a buildup of how many layers of wrap?
A.
B.
C.
D.
106.  (601) On the 54H60–91 propeller, which component provides a means for balancing the propeller?
A.
B.
C.
D.
107.  (007) Who is responsible for providing you with training on how to wear, use, and maintain personal protective equipment?
A.
B.
C.
D.
108.  (611) Which type of special inspection can be used to find minute cracks on a propeller blade?
A.
B.
C.
D.
109.  (227) Which valve in the propeller control assembly is actuated by the NTS actuator rod to increase propeller blade angle?
A.
B.
C.
D.
110.  (048) What information is found in Part I of an AFTO Form 244?
A.
B.
C.
D.
111.  (204) Which method of producing thrust does a turboprop engine use?
A.
B.
C.
D.
112.  (609) The pulse generator inputs to the synchrophaser unit are used only
A.
B.
C.
D.
113.  (045) To prepare the engine fuel system for service after depreservation, you must flush the system with
A.
B.
C.
D.
114.  (039) What numerical value is given to a fitting used on tubing that measures 3/8 inch?
A.
B.
C.
D.
115.  (803) An understanding of the operating principles of engine instruments will help you decide
A.
B.
C.
D.
116.  (607) On the 54H60–91 propeller, during alpha range operation, which cam changes speeder spring tension so the governor pilot valve can maintain 100 percent rpm?
A.
B.
C.
D.
117.  (013) A Category I DR is used to report a deficiency
A.
B.
C.
D.
118.  (221) The recommended method of heating inner races of bearings before installing them is
A.
B.
C.
D.
119.  (020) Who makes sure the AFTO IMT 22 is valid and warrants submission?
A.
B.
C.
D.
120.  (409) What term is used to indicate that air is being mixed with the oil in the oil pump to create pockets of air?
A.
B.
C.
D.
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