Electrical System Components Section D

The wiring between components must be of __________ construction.

stranded

Copper wire use for aircraft electrical system installations must meet MIL-W-________ specifications.

22759

Aluminum wire used for aircraft electrical system installations must meet MIL-W-_____________ specifications.

7072

The standard insulation strength for electrical wire used in aircraft installations is _____ volts.

600

The smallest gauge aluminum wire recommended for use in aircraft systems is ______ gauge.

6

A________ gauge aluminum wire could be used to replace a 4-gauge copper wire.

2

When selecting the wire size to use in an electrical system installation, you must consider the maximum _______ the wire will carry and the maximum ______________ allowed.

current, voltage

Two basic types of electrical wiring installations are:

a. open wiring
b. In conduit

If a wire bundle is routed through a compartment parallel to a fuel line, the wire bundle should be __________ the fuel line.

above

No wire bundle should be closer than _______ inches from a control cable.

3

Electrical wire bundles are fastened to the aircraft structure with insulated ______ clamps.

cushion

The two basic ways to prevent electromagnetic interference in radio and electronic equipment are:

a. bonding
b. shielding

The inside diameter of a conduit must be about ______ percent larger than the maximum diameter of he wire bundle it encloses.

25

_______ is used in an aircraft electrical system to intercept radiated electrical energy.

shielding

Give the color code for the insulation on a solderless terminal used on each of he following size wires:
a.16 gauge
b. 22 gauge
c. 10 gauge
d. 18 gauge

a. blue
b. red
c. yellow
d. red

When a terminal is properly crimped onto an electrical wire, the joint should be _______ as strong as the wire itself.

100%

The smallest terminal stud allowed for electrical power systems is a number ___________.

10

There should never be more than _________terminals on any one stud.

4

Most junction boxes in the powerplant area are mounted _______.

vertically

_________ consists of connecting all components in the aircraft together so that there ill be no insulated components on which electrical charges can build up.

Bonding

A bonding strap that is required to carry return current from a component should not have a resistance of more than _______ milliohms.

3

The circuit breaker or fuse should open before the conductor _______ _______.

emits smoke

A circuit breaker that holds the circuit open if a fault is present, regardless of the position of the operating control, is called a ______-________ circuit breaker.

trip-free

Automatic reset circuit breakers_____ used in aircraft electrical systems.

are not

Two-position "on-off" switches should be mounted so that the "on" position is reached by an _______ movement.

upward

The principle difference between a relay and a solenoid is that a relay has a ________ iron core, while a solenoid has a _____ one.

fixed, movable