2a651 Eoc Practice Test All Volumes

120 Questions  I  By AerospacePropulsion
2A651 EOC Practice Test

  
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1.  (030) The vernier scale on a micrometer is used to read measurements in
A.
B.
C.
D.
2.  (221) The recommended method of heating inner races of bearings before installing them is
A.
B.
C.
D.
3.  (224) 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.
B.
C.
D.
4.  (035) Light is transmitted to the tip of a borescope by
A.
B.
C.
D.
5.  (417) What provides the PTO shaft that is used to drive the CSD?
A.
B.
C.
D.
6.  (413) How many scavenge oil pumps are located in the RGB?
A.
B.
C.
D.
7.  (234) The T700 gas generator turbine rotor drives the
A.
B.
C.
D.
8.  (841) Bearing failure from moisture, lack of protective oils, improper handling, or improper storage could cause
A.
B.
C.
D.
9.  (609) Besides maintaining the optimum blade phase angle relationship between all propellers, what else does synchrophasing do?
A.
B.
C.
D.
10.  (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.
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.  (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.
13.  (834) During what inspection phase are operational checks made according to the technical order (TO)?
A.
B.
C.
D.
14.  (821) How many primary air silencers are there on aircraft noise suppressors to help reduce turbine whine?
A.
B.
C.
D.
15.  (602) On the 54H60–91 propeller, which pump assists the main pressure pump when large blade angle movements are required?
A.
B.
C.
D.
16.  (213) The parts on a can-annular combustion section must be removed in a specific order because of the
A.
B.
C.
D.
17.  (815) What is used to support the fan and low pressure turbine?
A.
B.
C.
D.
18.  (039) You can identify the various system lines used to transfer fluids and gases on jet engines by
A.
B.
C.
D.
19.  (832) On a disassembled engine, a visual inspection of the combustion chamber is preferred over a borescope inspection because
A.
B.
C.
D.
20.  (602) On the 54H60–91 propeller, which valve, contained in the valve housing, controls the flow of hydraulic fluid to and from the dome assembly?
A.
B.
C.
D.
21.  (213) The excess airflow that is not burned in the combustion section is used to
A.
B.
C.
D.
22.  (609) How much change in rpm does the compensating network in the synchrophaser unit allow the speed bias motor to correct?
A.
B.
C.
D.
23.  (021) In RCM, which preventative maintenance task is a scheduled inspection to detect a potential failure condition?
A.
B.
C.
D.
24.  (024) What supports base-level technicians by providing technical assistance and performing any repairs beyond their responsibility/capability?
A.
B.
C.
D.
25.  (034) How many range settings does the Fluke 8025A multimeter have?
A.
B.
C.
D.
26.  (438) In the mechanical blockage-type thrust reverser, when the reverser is not in use, what happens to the doors?
A.
B.
C.
D.
27.  (036) What type of washer is used to prevent corrosion of dissimilar metals?
A.
B.
C.
D.
28.  (240) External flanges on the F100 engine are referred to by
A.
B.
C.
D.
29.  (807) The tachometer indicator is
A.
B.
C.
D.
30.  (832) Defects (such as cracks) found during combustion chamber borescope inspections
A.
B.
C.
D.
31.  (235) The F108 engine can be broken down into how many individual modules?
A.
B.
C.
D.
32.  (622) On a GTCP165 engine, the speed switch control does not control the engine during
A.
B.
C.
D.
33.  (205) The heat content per pound of kerosene is how many Btu’s?
A.
B.
C.
D.
34.  (833) Through extensive testing, engine manufacturers determine how long a particular part should last. This is known as the
A.
B.
C.
D.
35.  (829) Where would you begin your investigation of an engine with a possible oil consumption problem?
A.
B.
C.
D.
36.  (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.
37.  (218) How many different types of loads can be imposed on a jet engine bearing?
A.
B.
C.
D.
38.  (605) On the 54H60–91 propeller, when pressure builds to between 240 and 280 psi, which valve is unseated and allows the stop levers to retract?
A.
B.
C.
D.
39.  (804) A typical jet engine exhaust gas temperature (EGT) indicating system contains thermocouples, leads, an indicator, and
A.
B.
C.
D.
40.  (621) On an GTCP165 engine oil system, air that leaks past various oil seals exits through the
A.
B.
C.
D.
41.  (428) Discharge air used for aircraft engine anti-icing to heat-critical areas is taken from which engine area?
A.
B.
C.
D.
42.  (827) The noise suppressor at a portable test cell is not equipped with
A.
B.
C.
D.
43.  (618) The impeller wheel and two turbine wheels in the turbine section of the GTCP165 engine are connected by
A.
B.
C.
D.
44.  (812) During vibration analysis, frequency is usually measured in
A.
B.
C.
D.
45.  (819) The pressure gauges used for an oil system pressure checks are connected at the
A.
B.
C.
D.
46.  (622) During normal GTCP165 engine shutdown, what circuit trips to stop the engine?
A.
B.
C.
D.
47.  (404) Which F100-PW–220 engine fuel system component controls pressurization of the core engine fuel system?
A.
B.
C.
D.
48.  (402) The main fuel control allows the engine to safely accelerate, reducing the possibility of
A.
B.
C.
D.
49.  (609) Which board in the synchrophaser unit receives input signals that are compared together, modified, and used to control the speed bias motors?
A.
B.
C.
D.
50.  (027) What is the purpose of the Lead the Fleet/Pacer programs?
A.
B.
C.
D.
51.  (219) The bearing removal tools that are most commonly used include
A.
B.
C.
D.
52.  (605) On the 54H60–91 propeller, what prevents engagement of the stationary and rotating ratchets at blade angles below 25° and above 55°?
A.
B.
C.
D.
53.  (403) What type of fuel control uses items such as thermocouples, relays, amplifiers, and solenoids to help control a jet engine?
A.
B.
C.
D.
54.  (203) Which section of a jet engine keeps the compressor rotating?
A.
B.
C.
D.
55.  (603) The condition lever GND STOP position is only effective on the ground because the circuits made in this position are completed through what switches?
A.
B.
C.
D.
56.  (250) What is the nozzle module mounted to on the F119–PW–100 engine?
A.
B.
C.
D.
57.  (406) What component is controlled by the AE2100D3 FADEC through the ENGINE START switch for normal engine shutdown or by the fire control handle for emergency shutdown?
A.
B.
C.
D.
58.  (801) To become an expert troubleshooter, you must
A.
B.
C.
D.
59.  (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.
60.  (423) Which item initially rotates the JFS?
A.
B.
C.
D.
61.  (403) On fuel controls that require setting during an engine trim, calibration and/or adjustment screws must be
A.
B.
C.
D.
62.  (234) The T700 power turbine drive shaft assembly is made up of what two components?
A.
B.
C.
D.
63.  (216) The exhaust duct connects the turbine outlet and the
A.
B.
C.
D.
64.  (413) In the power unit oil system, the dual-port oil jet mounted on the front side of the compressor air inlet housing is used to lubricate the
A.
B.
C.
D.
65.  (841) Which characteristic is the most common cause of bearing failure?
A.
B.
C.
D.
66.  (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.
67.  (007) For hazardous waste disposal, it is unlikely the Air Force can justify
A.
B.
C.
D.
68.  (415) Oil sampling intervals should not vary by more than
A.
B.
C.
D.
69.  (438) One type of aerodynamic blockage thrust reverser uses
A.
B.
C.
D.
70.  (020) Which AFTO IMT 22 recommendation would you submit which, if not corrected, could cause personnel injury or damage to equipment or property?
A.
B.
C.
D.
71.  (605) On the 54H60–91 propeller, between the blade angles of 25° and 55°, what will keep the rotating and stationary ratchets disengaged?
A.
B.
C.
D.
72.  (015) The first part of a TO number identifies the
A.
B.
C.
D.
73.  (803) An understanding of the operating principles of engine instruments will help you decide
A.
B.
C.
D.
74.  (806) The oil pressure indicator receives an electrical signal from the
A.
B.
C.
D.
75.  (619) On an GTCP165 engine, the accessory drive section forward housing provides mounts for the components, which include fuel control unit, oil pump assembly, oil filter element, vane-axial fan assembly, and
A.
B.
C.
D.
76.  (612) The term “No. 320 grit” refers to which feature of sandpaper?
A.
B.
C.
D.
77.  (230) What type of bearings support the T56 compressor rotor at the front and rear?
A.
B.
C.
D.
78.  (047) On the personnel maintenance platforms, the purpose of the platform safety lockpins is to
A.
B.
C.
D.
79.  (609) The pulse generator inputs to the synchrophaser unit are used only
A.
B.
C.
D.
80.  (833) Using the wrong cleaning agent on a jet engine part
A.
B.
C.
D.
81.  (214) What is placed in front of the rotating blades in an engine turbine section?
A.
B.
C.
D.
82.  (249) Which bearing is located in the LPT of the F119–PW–100 engine?
A.
B.
C.
D.
83.  (004) To avoid the engine exhaust blast, what is the minimum distance in feet to the rear of the aircraft?
A.
B.
C.
D.
84.  (418) The slide-type resistor in the EGT circuit is used to
A.
B.
C.
D.
85.  (008) A specialized function of the supply mission is
A.
B.
C.
D.
86.  (810) Inlet pressure (Pt2) is transmitted from its sensing point
A.
B.
C.
D.
87.  (046) When metal is attacked by chemical corrosion, it will start
A.
B.
C.
D.
88.  (233) What type of compressor rotor assembly is used on the AE2100D3 engine?
A.
B.
C.
D.
89.  (614) What R391 Dowty propeller assembly part provides an aerodynamic faring over the aft section of the hub?
A.
B.
C.
D.
90.  (413) Which type of oil pump is used on the T56 engine?
A.
B.
C.
D.
91.  (047) Which maintenance platform can be adjusted from 3 to 7 feet?
A.
B.
C.
D.
92.  (820) Which F–16 operational check allows you to start the jet fuel starter (JFS) without advancing the throttle to idle or supplying fuel to the aircraft engine?
A.
B.
C.
D.
93.  (008) Which supply document provides a means for organizations to review all document numbers processed during the day by the SBSS?
A.
B.
C.
D.
94.  (248) Which bearing compartment is contained in the intermediate case of the F119–PW–100 engine?
A.
B.
C.
D.
95.  (030) Micrometers are generally used to make measurements to an accuracy of
A.
B.
C.
D.
96.  (036) Proper bolt length allows a minimum of how many threads protruding the nut?
A.
B.
C.
D.
97.  (042) Which container does not require warehouse facilities?
A.
B.
C.
D.
98.  (813) The two types of transducers used to measure vibration are
A.
B.
C.
D.
99.