1(8373) An electric motor used to raise and lower a landing gear would most likely be a
split field series-wound motor
2(8086) Which is an identifying characteristic of acrylic plastics?
Zinc chloride will have no effect.
3(8114) When repairing a small hole on a metal stressed skin, the major consideration in the design of the patch should be
the shear strength of the riveted joint
4(8117) When straightening members made of 2024-T4, you should
straighten cold and reinforce
5(8156) The length of rivet to be chosen when making a structural repair that involves the joining of 0.032-inch and 0.064 inch aluminum sheet, drilled with a No. 30 drill, is
5/16 inch
6(8087) The part of a replacement honeycomb core that must line up with the adjacent original is the
ribbon direction
7(8109) When drilling stainless steel, the drill used should have an included angle of
140° and turn at a low speed
8(8108) What is the minimum edge distance for aircraft rivets?
Two times the diameter of the rivet shank
9(8104) What should be the included angle of a twist drill for soft metals?
90°.
10(8170) You can distinguish between aluminum and aluminum alloy by
testing with a 10 percent solution of caustic soda
11(8106) A single-lap sheet splice is to be used to repair a section of damaged aluminum skin. If a double row of 1/8-inch rivets is used, the minimum allowable overlap will be
13/16 inch.
12(8057) When balsa wood is used to replace a damaged honeycomb core, the plug should be cut so that
the grain is perpendicular to the skin
13(8110) What is the minimum spacing for a single row of aircraft rivets?
Three times the diameter of the rivet shank.
14(8184) Engine mount members should preferably be repaired by using a
larger diameter tube with fishmouth and rosette welds
15(8928) CSD generators are usually cooled by
oil spray
16(8485) How would the air pressure charge in the accumulator be determined if the engine is inoperative, but the system still has hydraulic pressure?
operate a hydrualic unit slowly and note the pressure at which a rapid pressure drop begins as it goes toward zero
17(8557) When purging a freon air conditioning system, it is important to release the charge at a slow rate. What is the reason for the slow-rate discharge?
Prevent excessive loss of refrigerant oil
18(8694.12) (Refer to Figure 33.) What kind of antenna is this?
A VORlide slope antenna
19(8765) Where is fuel pressure taken for the pressure warning signal on most aircraft engines?
Fuel pressure line of the carburetor
20(8733) What should be used to remove flux from an aluminum tank after welded repairs?
Five percent solution of nitric or sulfuric acid
21(8608) Fuel flow transmitters are designed to transmit data
electrically
22(8670) An emergency locator transmitter (ELT) is normally activated by an inertial switch or equivalent mechanism if subjected to a force of a prescribed intensity and duration. It must activate when the force is applied
parallel to the longitudinal axis of the aircraft
23(9024) If a fire extinguisher cartridge is removed from a discharge valve, it should be
used only on the original discharge valve assembly
24(8001) Laminated wood spars may be substituted for solid rectangular wood spars
if the same quality wood is used in both
25(8558) When a vapor-cycle cooling system is not in operation, what is an indication that the system is leaking freon?
Oil speeage
26(8710.2) A fuel system must be designed to prevent fuel-vapor ignition caused by
lightning
27(8864) The nominal rating of electrical switches refers to continuous
current rating with the contacts closed
28(8399) What type of selector valve is one of the most commonly used in hydraulic systems to provide for simultaneous flow of fluid into and out of a connected actuating unit?
four-port, closed center valve
29(8819) A series-wound DC electric motor will normally require
more current at low RPM than at high RPM
30(8070) The classification for fiberglass reinforcement material that has high resistivity and is the most common is
E-glass
31(8570) In a high-pressure oxygen system, if the pressure reducer fails, what prevents high-pressure oxygen from entering the system downstream?
pressure relief valve
32(8743) A probe or a series of probes is used in what kind of fuel quantity indicating system?
Capacitor
33(8718) Which of the following may be used for the repair of fuel leaks on most integral fuel tanks?
riveting and resealing
34(8409) (Refer to Figure 11.) An AN flared tube fitting is referred to in which picture?
1
35(8559) In an operating vapor-cycle cooling system, if the two lines connected to the expansion valve are essentially the same temperature, what does this indicate?
The expansion valve is not metering freon properly
36(8556) In what position should the bottle be placed when adding liquid freon to a vapor-cycle cooling system?
Vertical with the outlet at the bottom
37(8322) Debooster valves are primarily used in brake systems primarily to
reduce the pressure and release the brakes rapidly
38(8834) When a diode is checked for an open circuit or a short circuit, it should be
disconnected from the circuit
39(8051) The installation of CherryMax and Olympic-Lok rivets is accomplished by utilizing
a pulling tool
40(8175) The sight line on a sheet metal flat layout to be bent in a cornice or box brake is measured and marked
one radius from the bend tangent line that is placed under the brake
41(8874) Bonding connections should be tested for
resistance value
42(8037) When humidity is low, what is likely to occur if hydrated wash primer is applied to unpainted aluminum and then, 30 to 40 minutes later, a finish top coat is applied?
a glossy, blush-free finish
43(8097) What is the most common method of cementing transparent plastics?
soak method
44(8407) What is one advantage of piston-type hydraulic motors over electric motors?
there is no fire hazard if the motor is stalled
45(8471) Quick-disconnect couplings in hydraulic systems provide a means of
quickly connecting and disconnecting hydraulic lines without loss of fluid or entrance of air into the system
46(8616) The function of a symbol generator (SG) in an EFIS is to
receive and process input signals from aircraft and engine sensors and send the data to the appropriate display
47(8207) When a butt-welded joint is visually inspected for penetration, the penetration should be
100 percent of the thickness of the base metal when making a butt weld
48(8494) A loud hammering noise in a hydraulic system that has an accumulator usually indicates
too low or no preload in the accumulator
49(8439) What safety device is usually located between the driving unit and hydraulic pump drive shaft?
pump drive coupling shear section
50(8838) Which of the following are the major parts of a DC motor?
Armature assembly, field assembly, brush assembly, and end frame
51(8360) A close inspection of a fusible plug reveals the core has experienced some deformation. What is the appropriate maintenance procedure?
Replace all the fusible plugs.
52(8773) A fuel pressure relief valve is required on an aircraft
positive-displacement fuel pump
53(8316) If it is determined that spongy brake action is not caused by air in the brake system, what is the next most likely cause?
Deteriorated flexible hoses
54(8846) Electrical connectors used in the aircraft assemblies should meet which of the following specifications?
Military Specifications (MS)
55(8091) When installing transparent plastic enclosures which are retained by bolts extending through the plastic material and self-locking nuts, the nuts should be
Tightened to a firm fit, then backed off one full turn
56(8493) A common cause of slow actuation of hydraulic components is
internal leakage in the actuating unit
57(8694.7) (Refer to Figure 28.) What kind of antenna is this?
An ELT antenna
58(8710.7) A transducer in a fuel pressure system serves what function?
Converts fluid pressure directly through a transmitter to the indicator
59(8437) If an aircraft's constant-pressure hydraulic system cycles more frequently than usual and no fluid leakage can be detected, the most probable cause is
low accumulator air preload
60(8298) Where would you find the recommended statement for recording the approval or disapproval for return to service of an aircraft after a 100-hour or annual inspection?
14 CFR Part 43
61(8014) Compression failures in wood aircraft structures are characterized by buckling of the fibers that appear as streaks on the surface
at right angles to the grain
62(8584) On transport category aircraft what might be an indication of an over pressure event of the aircraft oxygen system?
The green thermal expansion disk missing
63(8478) If fluid is added to a reservoir in a constant pressure hydraulic system while the system is pressurized, what will result?
The fluid level will increase when system pressure is reduced
64(8633) How is a flangeless instrument case mounted in an instrument panel
By an expanding-type clamp secured to the back of the panel and tightened by a screw from the front of the instrument panel
65(8440) Which valve installed in a hydraulic system will have the highest pressure setting?
Thermal relief valve
66(8267) After repairing or recovering a rudder, the surface should be rebalanced
to manufacturer's specifications
67(8139) Which part of the 2017-T36 aluminum alloy designation indicates the primary alloying agent used in its manufacture?
2
68(8554) What is the condition of the refrigerant as it leaves the evaporator of a vapor-cycle cooling system
Low-pressure vapor
69(8772)
(1) A fuel pressure gauge is a differential pressure indicator.
(2) A fuel pressure gauge indicates the pressure of the fuel entering the carburetor.
Regarding the above statements,
both 1 and 2 are true
70(8281) Movement of the cockpit control toward the nosedown position during a ground operational check of the elevator trim tab system will cause the trailing edge of the trim tab to move in which direction?
Upward regardless of the elevator position
71(8561) A small amount of water in a vapor cycle cooling system can freeze
in the expansion valve and stop the entire system operation
72(8337) the pressure source for power brakes is
the main hydraulic system.
73(8948) When an airplane's primary flight control surfaces are set for a particular phase of flight, such as landing or takeoff, the corresponding control-surface indicating system will show
trim position
74(8824) Which of the following is not one of the purposes of interpoles in a generator?
Reduce field strength
75(8747) What is the dielectric (nonconducting material) in a capacitance-type fuel quantity indicating system?
fuel and air in the tank
76(9018) What method is used to detect the thermal discharge of a built-in fire-extinguisher system?
a rupture of the red plastic disk in the thermal discharge line
77(8192) The most important consideration(s) when selecting welding rod is
material compatibility
78(8105) When comparing the machining techniques for stainless steel sheet material to those for aluminum alloy sheet, it is normally considered good practice to drill the stainless steel at a
lower speed with more pressure applied to the drill
79(8481) One of the main advantages of Skydrol is its
wide operating temperature
80(8357) If a brake debooster is used in a hydraulic brake system, its position in the system will be
between the brake control valve and the brake actuating cylinder
81(8136) Heat-treated rivets in the D and DD series that are not driven within the prescribed time after heat treatment or removal from refrigeration
must be reheat treated before use
82(8386) To protect seals from damage when installed over a threaded section, the threaded section should be
covered with a suitable sleeve
83(8404) If a rigid tube is too short for the flare to reach its seat before tightening, pulling it into place by tightening
may distort the flare