Aircraft Electrical Systems
Electric wire terminals for most aircraft applications must be what type?
Ring terminals.
Which seals are used with petroleum based hydraulic fluids?
Buna-N
What type of loads cause the most rivet failures?
Shear
The maximum time a 100-hour inspection may be extended is...
10 hours.
A fully integrated autopilot controls the aircraft around how many axes?
3
Flapper valves are used in fuel tanks to...
act as check valves.
How are generators rated?
Amperes at rated voltage.
The internal resistance of a fluid which tends to precent it from flowing is called...
viscosity.
What should be the included angle of a twist drill for soft metals?
90 degrees
Servicing diagrams that show the arrangement of equipment and location of quick access doors on an aircraft can be found where?
Aircraft Manufacturer's Maintenance Manual
Doublers are used when antennas are installed to...
reinstate the structural strength of the aircraft skin.
Why are jet fuels more susceptible to water contamination than aviation gasonline?
Jet Fuel has a higher viscosity than gasoline.
If several long lengths of electrical cable are to be installed in rigid conduit, the possibility of damage to the cable as it is pulled through the conduit will be reduced by...
dusting the cable with powdered soapstone.
A filter incorporating specially treated cellulose paper is identified as a...
micronic filter.
A DD rivet is heat treated before use to...
soften to facilitate riveting.
14 CFR part 91
The preferred location of an ELT is...
as far aft as possible but forward of the empennage.
Why is the main fuel strainer located at the lowest point in the fuel system?
It traps any small amount of water that may be present in the fuel system.
The navigation lights of some aircraft consist of a single circuit controlled by a single switch which has an ON position and an OFF position, with no additional positions possible. What type of switch is this referred to as?
Single Pole, Single Throw (SPST), Two Position Switch.
They hydraulic component that automatically directs fluid from either the normal source or an emergency source to an actuating cylinder is called a...
shuttle valve.
The Dzus turnlock fastener consists of a stud, gromet, and receptacle. What is the stud length measured in?
Hundredths of an inch
aircraft owners and other interested persons of unsafe conditions and prescribes the condition under which the product may continue to be operated.
In which control element of an autopilot system is an attitude indicator?
Sensing
What is the dielectric (nonconducting material) in a capacitance type fuel quantity indicating system?
Fuel and air in the tank.
The voltage output of an alternator may be regulated by controlling the...
voltage output of the dc exciter.
If fluid is added to a non-pressurized reservoir in a constant pressure hydraulic system while the system is pressurized the fluid level will....
increase when system pressure is reduced.
When an MS20470D rivet is installed, its full shear strength is obtained...
only after a period of age hardening.
Who may perform the work activities required for a major repair or alteration to an aileron?
Any certificated mechanic with an airframe rating but the work must be signed off for return to service by an IA.
In the landing configuration GPWS typically monitors the radio (radar) altimeter; air data computer; instrument landing system, and...
landing gear and flap positions.
When inspecting a removable rigid fuel tank for leaks, what procedure should be followed?
Pressurize the tank with air and brush with soapy water.
In a generator, what eliminates any possible sparking to the brush guides caused by the movement of the brushes within the holder?
The Brush Pigtail.
One of the distinguishing characteristics of an open center selector valve used in a hydraulic system is that...
fluid flows through the valve in the OFF position.
What is generally the best procedure to use when removing a solid shank rivet?
Drill to the base of the manufactured rivet with a drill one size smaller than the rivet and remove the rivet with a punch.
Large airplanes and turbine-powered multiengine airplanes operated under FAR part 91, General Operating and Flight Rules, must be inspected in accordance with....
A DME antenna should be located in a position on the aircraft that will...
not be blanked out by the wind when the aircraft is banked.
An electrical type fuel quantity indicating system consists of an indicator on the flight deck and a float in the tank that works how?
That moves a connecting arm to the wiper on a variable resistor in the tank.