FAA quiestions i got wrong

On some cabin pressurization systems, pressurization on the ground is restricted by the

Main landing gear operated switch

The inductor-type inverter output voltage is controlled by the

DC stator field current

Which of the following copper electrical cable sizes should be selected to replace a No. 6 aluminum electrical cable?

NO. 6

How does the magnetic brake used to stop rotation of an electric motor armature operate?

A friction brake is applied by a spring and released by a magnet

A DME antenna should be installed on the aircraft in a position that will

Not be blanked out by the wing when the aircraft is banked

The preferred location of a VOR antenna on light aircraft is on

 

Top of the cabin with the apex of the V pointing foreward

According to Part 23, what minimum required markings must be placed at or near each appropriate fuel filler cover for reciprocating engine-powered airplanes?

 

THe word ‘Avgas’ and the minimum fuel grade

What unit is generally used to actuate the fuel pressure warning system?

Pressure-sensitive mechanism

Pressure fueling of aircraft is usually accomplished through

at least one single point connection

What is the purpose of a float-operated transmitter installed in a fuel tank?

it sends and elecric signal to the fuel quantity indicator

Where is fuel pressure taken for the pressure warning signal on most aircraft engines?

Fuel pressure line of the carburetor

What type of remote-reading fuel quantity indicating system has several probes installed in each fuel tank?

Electronic

Which condition would be most likely to cause excessive vacuum in a vacuum system?

Vacuum relief valve improperly adjusted

Which instruments are connected to an aircraft's static pressure system only?

Vertical speed indicator and altimeter

Instrument static system leakage can be detected by observing the rate of change in indication of the

Altimeter after suction has been applied to the static system to cause a prescribed equivalent altitude be indicated

Resistance-type temperature indicators using Wheatstone bridge or ratiometer circuits may be used to indicate the temperatures of which of the following?

Free air, carburetor air, coolant (engine), and oil temperature

The method of mounting aircraft instruments in their respective panels depends on the

Design of teh insturment case

An airspeed indicator measures the differential between

Pitot and static air pressure

Aircraft instrument value should be marked and graduated in accordance with

The specific aircraft maintenance or flight manual

What icing condition may occur when there is no visible moisture present?

Carburetor ice

What is one check for proper operation of a pitot-static tube heater after replacement?

ammeter reading

Arcing in an electrically heated windshield panel usually indicates a breakdown in the

conductive coating

What is the minimum edge distance allowed for aluminum alloy single lap sheet splices containing a single row of rivets as compared to a joint with multiple rows, all rivets being equal in diameter?

The minimum edge distance for the single row is equal to that for the multiple row

Rivet pitch is the distance between the

Centers of adjacent rivets in the same row

What purpose does flux serve in welding aluminum?

Minimuzes or prevents oxidation

The flat layout or blank length of a piece of metal from which a simple L-shaped bracket 3 inches by 1 inch is to be bent depends upon the radius of the desired bend. The bracket which will require the greatest amount of material is one which has a bend radius of

1/8 inch

Which is an identifying characteristic of acrylic plastics?

Zinc chloride will have not effect

What is the purpose of a gusset or gusset plate used in the construction and repair of aircraft structures?

 

To join and reinforce intersectin structural members

Fiberglass laminate damage that extends completely through one facing and into the core

REquires the replacement of teh damaged core and facing

The component in the hydraulic system that is used to direct the flow of fluid is the

Selector valve

Heat exchanger cooling units are required in some aircraft hydraulic systems because of

HHighe pressures and high rates of fluid flow

What happens to the output of a constant-displacement hydraulic pump when the hydraulic system pressure regulator diverts the fluid from the system to the reservoir?

The output pressure reduces, but the volume remains the same.

In a hydraulic system that has a reservoir pressurized with turbine-engine compressor bleed air, which unit reduces the air pressure between the engine and reservoir?

Air pressure regulator

Where is the buttock line or buttline of an aircraft?

 

A width measuremtn left or right of , and parallel to, the vertical centerline

A reduction in anti-torque thrust will cause the

Tail to pivot in the direction of torque rotation around the main rotor axis

Lockout deboosters are primarily pressure reducing valves that

allow full debooster piston travel without fluid from the high pressure side entering the low pressure chamber

If a brake debooster is used in a hydraulic brake system, its position in the system will be

 

Between teh brake control valve and the brake actuating cylinder

Internal leakage in a brake master cylinder unit can cause

THe pedal to slowly creep down while pressure is applied

When a landing gear safety switch on a main gear strut closes at liftoff, which system is deactivated?

Antiskid system

Extension of an oleo shock strut is measured to determine the

Peoper operation position of the strut

In a high-pressure oxygen system, if the pressure reducer fails, what prevents high-pressure oxygen from entering the system downstream?

Pressure relief valve

To what depth is the mica insulation between the commutator bars of a DC generator undercut?

Equal to the width of the mica

Grounding is electrically connecting a conductive object to the primary structure. One purpose of grounding is to

prevent development of radio frequency potentials

Which of the following factors must be taken into consideration when determining the wire size to use for an aircraft installation?

Allowable power loss, permissible voltage drop, current carrying capability of teh conductor, type of load.

If the (+) terminal of a voltmeter is connected to the (-) terminal of the source voltage and the (-) terminal of the meter is connected to the (+) terminal of the source voltage, the voltmeter will read

backwards

The starting current of a series-wound DC motor, in passing through both the field and armature windings, produces a

High starting torque

In an AC circuit with no phase lead or lag, which is true?

Real power equals apparent power

A circuit breaker is installed in an aircraft electrical system primarily to protect the

circuit and should be located as close to the source as possible

Static dischargers help eliminate radio interference by dissipating static electricity into the atmospher at

Low current levles

The preferred location of an ELT is

As far aft as possible but forward of the empennage

A radar altimeter indicates

Altitude above ground level

A fully integrated autopilot controls the aircraft around how many axes?

Three

One advantage of electrical and electronic fuel quantity indicating systems is that the indicator

Can be located any distance from the tank (s)

What is the dielectric (nonconducting material) in a capacitance-type fuel quantity indicating system?

Fuel and air in the tank

When inspecting a removable rigid fuel tank for leaks, what procedure should be followed?

Prssurize the tanke with aire and brush with soapy water

In some aircraft with several fuel tanks, the possible danger of allowing the fuel supply in one tank to become exhausted before the selector valve is switched to another tank is prevented by the installation of

a fuel pressure warning signal system

The pneumatic (reed) type stall warning system installed in some light aircraft is activated by

Negative air pressure

Which instruments are connected to an aircraft's static pressure system only?

bertical speed indicator and altimer

Some aircraft are protected against airframe icing by heating the leading edges of the airfoils and intake ducts. When is this type of anti-ice system usually operated during flight?

whenever icing conditions are first encountered or expected to occur

Which of the following are found in a laminated integral electrically heated windshield system?

Autotransformer, heat control relay, heat control toggle switch, and indicating light.

What icing condition may occur when there is no visible moisture present?

Carburetor ice

Which of the following regulates the vacuum of the air pump to hold the deicing boots deflated when the pneumatic deicing system is off?

Suction relief valve

When an MS20470D rivet is installed, its full shear strength is obtained

Only after a period of age hardening

Rivet pitch is the distance between the

Centers of adjacent rivets in the same row

The most important consideration(s) when selecting welding rod is

Material compatibility

Edge notching is generally recommended in butt welding above a certain thickness of aluminum because it

aids in getting full penetration of teh metal and prevents local distortion

A piece of flat stock that is to be bent to a closed angle of 15° must be bent through an angle of

165 degrees

An emergency supply of fluid is often retained in the main hydraulic system reservoir by the use of a standpipe. The supply line is connected to the

Inlet of the main hydraulic system

The correct dihedral angle can be determined by

Using a dihedral board and buble level along the front spar of each wing

Wing dihedral, a rigging consideration on most airplanes of conventional design, contributes most to stability of the airplane about its

longitudinal axis

What is the purpose of a compensating port or valve in a brake master cylinder of an independent brake system?

Premits the fluid to flow toward or away from the reservoir as temperture changes

A special bolt in a landing gear attachment requires a torque value of 440 inch-pounds. How many foot-pounds are required?

36.8

The repair for an out-of-tolerance toe-in condition of main landing gear wheels determined not to be the result of bent or twisted components consists of

inserting, removing, or changing the location of washers or spacers at teh center pivotal point of the scissor torque links

On most aircraft, the oil level of an air and oil shock strut is checked by

Releasing the air and seeing that the oil is to the level of the filler plug

The correct dihedral angle can be determined by

using a dihedral board and bubble level along the front spar of each wing

The main system pressure relief valve in a simple hydraulic system equipped with a power control valve should be adjusted

with the power control valve held in the CLOSED position

Most variable displacement aircraft hydraulic pumps in use

Contain a built in means of system pressure regulation

Fungicidal dopes are used in aircraft finishing as the

first coat to prevent fabric rotting and are applied thin enough to saturate the fabric

Fiberglass damage that extends completely through a laminated sandwich structure

may be repaired

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

A piece of flat stock that is to be bent to a closed angle of 15° must be bent through an angle of

165

What is generally the best procedure to use when removing a solid shank rivet?

Drill to the base of the manufactured rivet head with a drill one size smaller than the rivet shank and remove the rivet with a punch.

vThe Dzus turnlock fastener consists of a stud, grommet, and receptacle. The stud length is measured in

hundredths of an inch

The shop head of a rivet should be

on and one-half times the diametr of the rivet shank

The shielding gases generally used in the Gas Tungsten Arc (GTA) welding of aluminum consist of

Helium or argon, or a mixture of helium and argon

Which of the following are found in a laminated integral electrically heated windshield system?

autotransformer, heat control relay, heat control toggle switch, and indicaing light

Which of the following indications occur during a normal operational check of a pneumatic deicer system?

Fluctuating readings on the pressure gauge and relatively steady readings on the vacuum gauge

When an unpressurized aircraft's static pressure system is leak checked to comply with the requirements of 14 CFR 91.411, what aircraft instrument may be used in lieu of a pitot-static system tester?

Altimeter

How is a flangeless instrument case mounted in an instrument panel?

By n expanding-type clamp secured to the back of teh panel and tightened by a screw form the front of the instrument panel

Normal fuel crossfeed system operation in multiengine aircraft

Provides a means to maintain a balanced fuel load condition

A fuel pressure relief valve is required on an aircraft

positive-displacement fuel pump

How is the outlet fuel pressure regulated on a submerged, single-speed, centrifugal-type fuel pump?

By the pumps design and internal clearences

Select one means of controlling the fuel temperature on turbine-powered aircraft.

engine bleed air to a heat exchanger

When an aircraft is fueled from a truck or fuel farm that has not been contaminated, daily draining

Of strainers and sumps is combined with periodic filter changes and inspection to ensure fuel is contaminant free

What component is the sensing device in an electromechanical autopilot system?

Gyro

On modern large aircraft, what electronic device typically monitors flight parameters and performs autopilot functions?

Flight management compouter

What is the main purpose of a servo in an autopilot system?

move the control surface as commanded

Radio equipment is bonded to the aircraft in order to

provide a low impedance ground and minimize radio interference form static electrical chrages.

An ammeter in a battery charging system is for the purpose of indicating the

rate of current used to chrge the battery.

In a freon vapor-cycle cooling system, where is cooling air obtained for the condenser?

abient air