2a651 Eoc Practice Test All Volumes

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2A651 EOC Practice Test

  
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1.  (237) On the F108 engine, the purpose of the HPT nozzle assembly is to accelerate the energy from the combustion gases to drive the
A.
B.
C.
D.
2.  (601) On the 54H60–91 propeller, what function is a task of the low pitch stop assembly?
A.
B.
C.
D.
3.  (811) The direct oil pressure gauge on a test cell is connected to an engine oil pressure line. This configuration will indicate oil pressure without using wiring, indicator, or
A.
B.
C.
D.
4.  (609) The master synchrophaser board located in the synchrophaser unit contains a master channel and a slave channel. These channels are used by which propellers?
A.
B.
C.
D.
5.  (610) Which is a function of normal governing?
A.
B.
C.
D.
6.  (807) The N2 tachometer generator is usually driven from the tachometer drive located on the
A.
B.
C.
D.
7.  (233) The AE2100D3 engine mount is divided into how many major structures?
A.
B.
C.
D.
8.  (823) During an inspection of the hush house you are not required to check the
A.
B.
C.
D.
9.  (233) What AE2100D3 nacelle access door contains a fire access door?
A.
B.
C.
D.
10.  (840) Turbine rotor blade failure usually occurs near the
A.
B.
C.
D.
11.  (837) The home station check (HSC) inspection is a combination of the basic post-flight (BPO) and
A.
B.
C.
D.
12.  (439) The F117-PW–100 fan thrust reverser door upper right and left sensors send a signal to which channel or channels of the EEC?
A.
B.
C.
D.
13.  (233) What type of compressor rotor assembly is used on the AE2100D3 engine?
A.
B.
C.
D.
14.  (047) Which maintenance platform can be adjusted from 3 to 7 feet?
A.
B.
C.
D.
15.  (234) The T700 engine consists of what four modules?
A.
B.
C.
D.
16.  (606) What is coordinated by the throttle in the controllable pitch range?
A.
B.
C.
D.
17.  (412) Approximately how many GPM does the AE2100D3 PUAD lube and scavenge pump provide at engine PTO?
A.
B.
C.
D.
18.  (214) Three types of turbine and vane assemblies used in jet engines are impulse, reaction, and
A.
B.
C.
D.
19.  (012) When a bench stock item has a type I shelf-life, it means the item
A.
B.
C.
D.
20.  (824) Which testing engine is equipped with a quick engine change (QEC) kit?
A.
B.
C.
D.
21.  (250) What is the nozzle module mounted to on the F119–PW–100 engine?
A.
B.
C.
D.
22.  (829) You can get information such as temperature and barometric pressure from equipment at the test cell site or from
A.
B.
C.
D.
23.  (407) What T56 engine controls the rotary movement of the fuel control metering valve?
A.
B.
C.
D.
24.  (243) On an F100–PW–220 engine, the front compressor drive turbine shaft is connected to the front compressor rotor by
A.
B.
C.
D.
25.  (229) For the safety coupling to disconnect the power unit from the RGB, torque must reach between
A.
B.
C.
D.
26.  (401) At room temperature, how many times longer will it take water to settle out of JP–8 than out of gasoline?
A.
B.
C.
D.
27.  (421) An F100-PW–100 engine augmentor igniter plug ionizes at a minimum rate of how many sparks per second?
A.
B.
C.
D.
28.  (416) On a simple AC generator, which item takes the current from the slip rings to operate the electrical device?
A.
B.
C.
D.
29.  (604) On the 54H60–91 propeller, which valve sets and maintains a pressure differential of about 100 psi between system pressure and the increase- or decrease-pitch pressure?
A.
B.
C.
D.
30.  (007) For hazardous waste disposal, it is unlikely the Air Force can justify
A.
B.
C.
D.
31.  (413) Bleed air flowing through which component increases airflow through the cooler?
A.
B.
C.
D.
32.  (420) On early ignition systems, the high-energy capacitor-type ignition system does not include a
A.
B.
C.
D.
33.  (032) To avoid rust, measuring tools should never be stored where the relative humidity exceeds what percentage?
A.
B.
C.
D.
34.  (029) What type of rule should you use for measuring an inside diameter?
A.
B.
C.
D.
35.  (610) How many slave channels are contained on the master synchrophaser board in the synchrophaser unit?
A.
B.
C.
D.
36.  (234) What routes oil and fuel through the T700 engine AGB?
A.
B.
C.
D.
37.  (004) How far does a propeller’s axis of rotation extend?
A.
B.
C.
D.
38.  (201) “The combination of decreased pressure above an airfoil, and the increased pressure below the airfoil produces lift” is best described by
A.
B.
C.
D.
39.  (234) The T700 power turbine drive shaft assembly is made up of what two components?
A.
B.
C.
D.
40.  (235) Primary airflow in the F108 engine is through all of the following components except the
A.
B.
C.
D.
41.  (025) A primary objective of the engine reporting system is to
A.
B.
C.
D.
42.  (206) What effect does the divergent design of a diffuser have on air pressure?
A.
B.
C.
D.
43.  (045) Engines inactive for over 180 days must have what accomplished?
A.
B.
C.
D.
44.  (613) When balancing a 54H60–91 propeller, the velocimeter is secured to the forward side of the RGB at what position (as viewed from the rear)?
A.
B.
C.
D.
45.  (408) Which type of oil cooler operates on the same principle as a radiator in an automobile?
A.
B.
C.
D.
46.  (608) On the 54H60–91 propeller, what is the minimum psi required to release the feather latches and allow the piston to move forward?
A.
B.
C.
D.
47.  (039) Copper tubing is not used on jet engines because it
A.
B.
C.
D.
48.  (839) What is the probable cause of compressor rotor shift?
A.
B.
C.
D.
49.  (804) Which jet engine temperature is not measured?
A.
B.
C.
D.
50.  (204) Which type of horsepower is delivered to the propeller for useful work?
A.
B.
C.
D.
51.  (617) The pneumatic air bled from the small gas turbine engine cannot be used to
A.
B.
C.
D.
52.  (034) What is the maximum voltage that can be measured if the range button is set at 30 on the Fluke 8025A multimeter?
A.
B.
C.
D.
53.  (605) On the 54H60–91 propeller, the function of the low pitch stop is to prevent the
A.
B.
C.
D.
54.  (215) Why is the “fir tree” method of attaching turbine blades (buckets) to the turbine rotor disc preferred?
A.
B.
C.
D.
55.  (609) Where is the pickup portion of the pulse generator located?
A.
B.
C.
D.
56.  (005) FOD is normally caused by
A.
B.
C.
D.
57.  (811) The test cell exhaust gas temperature (EGT) selector allows selection of
A.
B.
C.
D.
58.  (829) To prevent damage to the load cells when you are transferring an engine to the test stand,
A.
B.
C.
D.
59.  (824) In addition to determining the condition of a repaired or overhauled engine, you also test engines
A.
B.
C.
D.
60.  (240) External flanges on the F100 engine are referred to by
A.
B.
C.
D.
61.  (812) What type of vibration causes unnecessary engine removals and unwarranted repairs?
A.
B.
C.
D.
62.  (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.
63.  (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.
64.  (015) The first part of a TO number identifies the
A.
B.
C.
D.
65.  (828) Which of these is not considered a cause of foreign object damage (FOD)?
A.
B.
C.
D.
66.  (228) Which components comprise the torquemeter assembly?
A.
B.
C.
D.
67.  (811) The test cell IC temperature indicator displays temperatures in degrees Fahrenheit, with a range of
A.
B.
C.
D.
68.  (245) On an F100–PW–220 engine, the gearbox module is driven by the rear compressor through
A.
B.
C.
D.
69.  (610) For the 54H60–91 propeller to operate in the normal governing mode, the propeller governor control switch must be placed in the NORMAL position and what other conditions must be met?
A.
B.
C.
D.
70.  (225) What is the total gear reduction ratio of the RGB?
A.
B.
C.
D.
71.  (045) To prepare the engine fuel system for service after depreservation, you must flush the system with
A.
B.
C.
D.
72.  (420) On early ignition systems, what is the purpose of compositors in an ignition system?
A.
B.
C.
D.
73.  (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.
74.  (413) The power section and RGB oil systems are joined together at the
A.
B.
C.
D.
75.  (048) What information is found in Part I of an AFTO Form 244?
A.
B.
C.
D.
76.  (618) On an GTCP165 engine, turbine discharge temperature is controlled by the
A.
B.
C.
D.
77.  (821) How many primary air silencers are there on aircraft noise suppressors to help reduce turbine whine?
A.
B.
C.
D.
78.  (415) Oil sampling intervals should not vary by more than
A.
B.
C.
D.
79.  (407) On the T56 engine, how many and what type of fuel pumps are contained in the fuel pump and filter assembly?
A.
B.
C.
D.
80.  (839) A cold compressor stall that occurs at low revolutions per minute (RPM) and is accompanied by a slight overtemperature is called
A.
B.
C.
D.
81.  (616) On the R391 Dowty propeller, what does the DITU use to monitor itself for malfunctions?
A.
B.
C.
D.
82.  (813) The two types of transducers used to measure vibration are
A.
B.
C.
D.
83.  (432) What does a high-altitude stall sound like?
A.
B.
C.
D.
84.  (439) On the F117-PW–100 engine, what component controls hydraulic power for actuating both the fan and core thrust reversers?
A.
B.
C.
D.
85.  (604) On the 54H60–91 propeller, if the main filter becomes clogged, which valve opens to assure continued flow?
A.
B.
C.
D.
86.  (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.
87.  (208) When two or more turbine wheels are used in a jet engine, which component is placed directly in front of each turbine wheel?
A.
B.
C.
D.
88.  (608) On the 54H60–91 propeller, which component is the primary electrical ground for energizing the feather override holding coil?
A.
B.
C.
D.
89.  (613) During 54H60–91 propeller dynamic balancing, the propeller balance analyzer receive its two inputs from
A.
B.
C.
D.
90.  (417) What provides the PTO shaft that is used to drive the CSD?
A.
B.
C.
D.
91.  (441) The F100 engine augmentor’s primary nozzle actuator is driven by cables from the
A.
B.
C.
D.
92.  (827) The vibration pickups on the portable test cell are cooled by
A.
B.
C.
D.
93.  (409) Which type of oil system stores the oil in a tank fitted to the side of the engine?
A.
B.
C.
D.
94.  (409) The F100-PW–100 engine oil pressure varies with N2 speed, engine inlet oil temperature, and
A.
B.
C.
D.
95.  (002) You may attend the ALS after having how many months in the Air Force?
A.
B.
C.
D.
96.  (038) When lockwiring, how many twists per inch are required to produce the proper stiffness?
A.
B.
C.
D.
97.  (022) The primary goal of the ET&D program is to prevent or limit damage to turbine engines by
A.
B.
C.
D.
98.  (230) The stationary (stator) vane blades on the T56 compressor are used to
A.
B.
C.
D.
99.  (023) What drives the creation of a CRP?
A.
B.
C.
D.
100.  (812) What kind of engine vibration does not persist, but comes and goes?
A.
B.
C.
D.
101.  (248) On an F119–PW–100 engine, what function does the diffuser case serve other than housing the combustor?
A.
B.
C.
D.
102.  (826) Engines are mounted in the fixed test cell on a thrust stand or are suspended
A.
B.
C.
D.
103.  (232) What are used to retain the turbine buckets in the first-stage wheel of the T56–A–15 engine?
A.
B.
C.
D.
104.  (213) The parts on a can-annular combustion section must be removed in a specific order because of the
A.
B.
C.
D.
105.  (819) The pressure gauges used for an oil system pressure checks are connected at the
A.
B.
C.
D.
106.  (839) Careless operation of the throttle during emergency system operation could cause a compressor stall due to
A.
B.
C.
D.
107.  (219) The bearing removal tools that are most commonly used include
A.
B.
C.
D.
108.  (228) The torquemeter exciter wheels are in phase when
A.
B.
C.
D.
109.  (248) Which is not a part of the core module of a F119–PW–100 engine?
A.
B.
C.
D.
110.  (224) On the T56 turboprop engine, how many stages of reduction are in the RGB’s main reduction gear train?
A.
B.
C.
D.
111.  (802) The F100-PW–220 engine monitoring system component that acquires fault data from the digital electronic engine control (DEEC) and logs the faults with the time of their occurrence is the
A.
B.
C.
D.
112.  (832) On a disassembled engine, a visual inspection of the combustion chamber is preferred over a borescope inspection because
A.
B.
C.
D.
113.  (609) The fuel governing check switches are used to reset the propeller governor to what percentage of rpm in the alpha range?
A.
B.
C.
D.
114.  (220) Excessive bearing wear can usually be detected by
A.
B.
C.
D.
115.  (805) The fuel system component of a jet engine that operates by using a water wheel concept is the
A.
B.
C.
D.
116.  (211) In a dual-spool compressor, rpm of the N2 compressor are determined by the
A.
B.
C.
D.
117.  (430) On an F110-GE–129 engine, the anti-icing system prevents detrimental formation and accumulation of ice on front frame struts, forward centerbody, and
A.
B.
C.
D.
118.  (234) What components mount on the front face of the AGB on the T700 engine?
A.
B.
C.
D.
119.  (034) How many range settings does the Fluke 8025A multimeter have?
A.
B.
C.
D.
120.  (224) On the T56 turboprop engine, what is the overall reduction ratio of the RGB’s main reduction gear train?
A.
B.
C.
D.
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