The strength of a well-designed and properly prepared wood splice joint is provided by the,
bearing surface of the wood fibers. glue. reinforcement plates.
The purpose of restrictors in hydraulic systems is to,
control the rate of movement of hydraulically operated mechanisms. allow the flow of fluid in one direction only. lower the operating pressure of selected components.
One advantage of electrical and electronic fuel quantity indicating systems is that the indicator,
can be located any distance from the tank(s). has no movable devices. always measures volume instead of mass.
The angle of incidence of an airplane,
affects the dihedral of the wings. is that angle between the relative wind and the chord of the wing. does not change in flight.
What may be used as a lubricant on oxygen system tapered pipe thread connections?
Silicone dielectric compound. Glycerine. Teflon tape.
Fabric rejuvenator,
restores the condition of dope coatings. restores fabric strength and tautness to at least the minimum acceptable level. penetrates the fabric and restores fungicidal resistance.
An aircraft that is required by Section 91.409, to have a 100-hour inspection may be flown beyond the inspection requirement,
if necessary to reach a place at which the inspection can be accomplished, but not to exceed 10 flight hours. if necessary to reach a place at which the inspection can be accomplished, but a special flight permit is necessary. if necessary to reach a place at which the inspection can be accomplished, but not to exceed 15 flight hours.
The pneumatic (reed) type stall warning system installed in some light aircraft is activated by,
static air pressure. positive air pressure. negative air pressure.
The vertical flight of a helicopter is controlled by,
collective pitch changes. cyclic pitch changes. increasing or decreasing the RPM of the main rotor.
Longitudinal (fore and aft) structural members of a semi-monocoque fuselage are called,
spars and ribs. longerons and stringers. spars and stringers.
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?
Downward regardless of elevator position. Upward regardless of elevator position. Downward if the elevator is in the UP position and upward if the elevator is in the DOWN position.
The operating mechanism of most hydraulic pressure gauges is,
a Bourdon tube. an airtight diaphragm. an evacuated bellows filled with an inert gas to which suitable arms, levers, and gears are attached.
Pin knot clusters are permitted in wood aircraft structure provided,
they produce a small effect on grain direction. they have no mineral streaks. no pitch pockets are within 12 inches.
(1) Usually bleed air from a gas-turbine engine compressor can be safely used for cabin pressurization.
(2) Independent cabin condition air machines (air cycle machine) can be powered by bleed air from an aircraft turbine engine compressor.
Regarding the above statements,
only No. 1 is true. only No. 2 is true. both No. 1 and No. 2 are true.
When an air/oil type of landing gear shock strut is used, the initial shock of landing is cushioned by,
compression of the air charge. the fluid being forced through a metered opening. compression of the fluid.
When ac generators are operated in parallel, the,
amperes and frequency must both be equal. frequency and voltage must both be equal. amperes and voltage must both be equal.
With which system is differential control associated?
Trim. Aileron. Elevator.
Teflon hose that has developed a permanent set from being exposed to high pressure or temperature should,
not be straightened or bent further. not be reinstalled once removed. be immediately replaced.
Which of the following instrument discrepancies would require replacement of the instrument? 1. Red line missing. 2. Case leaking. 3. Glass cracked. 4. Mounting screws loose. 5. Case paint chipped. 6. Leaking at line B nut. 7. Will not zero out. 8. Fogged.
2, 3, 7, 8. 1,4,6,7. 1,3,5,8.
Which of the following are some uses for a dc selsyn system?
1. Indicates position of retractable landing gear.
2. Indicates the angle of incidence of an aircraft.
3. Indicates the altitude of an aircraft.
4. Indicates cowl flaps or oil cooler door position.
5. Indicates fuel quantity.
6. Indicates the rate of climb of an aircraft.
7. Indicates position of wing flaps. 1, 4, 5, 7. 2, 3, 4, 5. 2, 3, 5, 6.
The shielding gases generally used in the Gas Tungsten Arc (GTA) welding of aluminum consist of,
a mixture of nitrogen and carbon dioxide. nitrogen or hydrogen, or a mixture of nitrogen and hydrogen. helium or argon, or a mixture of helium and argon.
A CSD unit drives a generator through the use of,
a synchronous electric motor. an infinitely variable mechanical gearing system. a variable hydraulic pump and hydraulic motor.
What may be used as a lubricant on oxygen system tapered pipe thread connections?
Silicone dielectric compound. Glycerine. Teflon tape.
What is the most common method of cementing transparent plastics?
Heat method. Soak method. Bevel method.
What type of oxygen system uses the rebreather bag-type mask?
Diluter demand. Continuous flow. Demand.
If oxygen bottle pressure is allowed to drop below a specified minimum, it may cause,
the pressure reducer to fail. the automatic altitude control valve to open. moisture to collect in the bottle.
Fiberglass laminate damage not exceeding the first layer or ply can be repaired by,
filling with a putty consisting of a compatible resin and clean, short glass fibers. sanding the damaged area until aerodynamic smoothness is obtained. trimming the rough edges and sealing with paint.
Turbine engine exhaust gas temperatures are measured by using,
iron/constantan thermocouples. chromel/alumel thermocouples. ratiometer electrical resistance thermometers.
What method is usually employed to control the temperature of an anti-icing system using surface combustion heaters?
Thermo-cycling switches. Thermostats in the cockpit. Heater fuel shutoff valves.
The purpose of a localizer is to,
set the airplane on the proper approach angle to the runway. indicate the distance the airplane is from the end of the runway. align the airplane with the center of the runway.
Which of the following would give the first positive indication that a change-over from one fuel tank to another is needed?
Fuel pressure warning. Fuel pressure gauge. Fuel quantity indicator.
How should the splices be arranged if several are to be located in an electrical wire bundle?
Staggered along the length of the bundle. Grouped together to facilitate inspection. Enclosed in a conduit.
When a vapor-cycle cooling system is not in operation, what is an indication that the system is leaking freon?
Oil seepage. Bubbles in the sight glass. An ozone-like odor in the immediate area. Lubricating oil is sealed in a vapor-cycle cooling system. If refrigerant leaks from the system, it is quite likely to carry some traces of oil with it.
The point at which freon flowing through a vapor-cycle cooling system gives up heat and changes from a gas to a liquid is the,
condenser. evaporator. expansion valve.
The length of a rivet to be used to join a sheet of .032-inch and.064-inch aluminum alloy should be equal to,
two times the rivet diameter plus .064 inch. one and one-half times the rivet diameter plus .096 inch. three times the rivet diameter plus .096 inch.
CSD driven generators are usually cooled by,
oil spray. an integral fan. both ram air and an integral fan.
An embossed letter H on an air valve core stem,
is the manufacturer's trademark. indicates hydraulic type. indicates high-pressure type.
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