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Airframe Electrical > Quiz > Flashcards

Quiz Flashcards

0
Q

How is splicing generally done?

A

Through the use of a splicing sleeve

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1
Q

What is the purpose of a junction box?

A

To house multiple terminal strips

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2
Q

What is the purpose of bonding?

A

Bonding is used to produce continuity between different parts of the aircraft, so there is a complete path for return electrons

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3
Q

What is splicing?

A

Attaching two conductors in a permanent way

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4
Q

What must be done to splices if they are done in a bundle?

A

They must be staggered

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5
Q

When is shielding used?

A

In areas where lines of flux cause disturbance with a particular component.

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6
Q

What are three forms of circuit protectors?

A

Fuses, circuit breakers, current limiters.

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7
Q

What is the purpose of circuit protection?

A

To protect the wiring, not the component.

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8
Q

What causes a fuse to blow or a circuit breaker to trip?

A

Current

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9
Q

What type must aircraft circuit breakers be?

A

Trip free type

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10
Q

What is derating a switch?

A

Operating a device at less than it’s rated maximum power in order to prolong its life

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11
Q

What type of circuit is a battery circuit?

A

Pre bus

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12
Q

What type of system is a generator circuit?

A

A pre bus system

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13
Q

What is the primary source of aircraft electrical power aside from the ignition system?

A

The generator circuit

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14
Q

How many terminals does a generator have?

A

Two or three

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15
Q

What is a type A connection?

A

A connection where the voltage regulator is connected between the field and the ground

16
Q

What is a type B connection?

A

A connection where the voltage regulator is connected between the field and the armature

17
Q

Why do A&Ps need to be aware of the two different kinds of connections?

A

Proper use and wiring of voltage regulator

Proper method of flashing the field

18
Q

What type of system is the alternator circuit?

A

A pre bus system

19
Q

What type of circuit is the landing gear circuit?

A

A post bus circuit

20
Q

What type of circuit is a starter circuit?

A

Both a pre bus and a post bus

21
Q

What are navigational lights required by?

A

14 CFR 91.205

22
Q

Must all three navigational lights be on one circuit?

A

Yes

23
Q

Are instrument lights required?

A

No

24
Q

What does a red indication light mean?

A

Immediate hazard, required immediate corrective action

25
Q

What does an amber indication light mean?

A

Unsafe condition, needs corrective measures soon.

26
Q

What does a green indication light mean?

A

Safe operation

27
Q

What is the purpose of load analysis?

A

To ensure that the battery is always being charged and that the wiring is not overloaded.

28
Q

Describe the process of load analysis.

A

Performing a load analysis consists of comparing the load of a system to the alternator/generator output capabilities, and the wiring and circuit protection capabilities.

29
Q

Describe the steps of inspecting electrical things

A

Consult manufacturers service manual
Determine method of load monitoring is acceptable
Do a complete operational check
Check all components for security
Check terminals for security, corrosion and continuity
Check wiring for wear and proper routing, support clamping
Check fuses and circuit breakers for proper size
If necessary do a load analysis

30
Q

What is usually done when servicing components such as switches, relays, lights, terminals and terminal strips?

A

Remove and replace!

31
Q

What is an ohmmeter used for?

A

Checking resistance in a circuit, in a component, or continuity.

32
Q

What is a voltmeter used for?

A

Determining the voltage of a circuit, voltage dropper across a component, or voltage difference between two portions of a circuit

33
Q

What is an ammeter used for?

A

Measuring the current in a circuit

34
Q

What are the most common problems with circuits?

A

Open circuits
Short circuits
Low system voltage

35
Q

Describe the troubleshooting process for electrical

A

Gather all symptom info from customer
Confirm problem exists as described
Study understand proper operation of the system
(Make a simple sketch of only the electrical circuit, or portion of the electrical circuit you are dealing with)
Make a list of all probable causes
Work through list from simplest/cheapest to most complex/expensive

36
Q

What are voltmeters usually used for?

A

Troubleshooting opens

37
Q

What are ohmmeters usually used to troubleshoot?

A

Shorts!

Airframe Electrical (5 decks)

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