Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Power Gen Review > Exam Review 1 > Flashcards

Exam Review 1 Flashcards

1
Q

When removing electrical power switches should be in what position and circuit breakers?

A

Switches OFF

Circuit Breakers Opened

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

All circuit breakers should be ?

A

Collared

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What information goes on a PLACARD?

A 
Instruction
Reason
Identification
Date
Time
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

When using tools on electrical circuits, they should be what?

A

Careful

Insulated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the sequence for connecting to ground power?

A

Ground FIRST,

Air frame SECOND

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

When connecting to ground power you must be sure of what?

A
  • ALL controls are in agreement with surface potions

- Correct POLARITY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the procedure for checking continuity?

A

Power OFF

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Procedure for checking voltage?

A
  • DO NOT TOUCH METAL PARTS

- Parallel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Define Short CIRCUIT

A

Something “LIVE” touching the “GROUNDED” air frame structure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the sequence for removing a battery?

A
  • Remove NEGATIVE FIRST
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Sequence for installing a battery?

A
  • Attach NEGATIVE LAST
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the neutralizing agent for Lead Acid?

A

a Base such as BAKING SODA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Neutralizing agent for NICAD?

A

an BORIC ACID

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Describe THERMAL RUNAWAY?

A

a condition in a NICAD that reduces cell resistance allow more current to flow thus destroying the battery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Symptoms of thermal runaway?

A

Decrease RESISTANCE
Increase CURRENT
Increase TEMP.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

When is THERMAL RUNAWAY likely to occur?

A

BEGINNING/END of a CHARGING cycle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Describe a block diagram?

A
  • “STAGES”

- Principles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Describe Pictorial diagram?

A
  • Real Appearance
  • Assembly
  • Locating
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Describe a Schematic diagram??

A
  • Symbols

- Testing/Trouble

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

The Schematic Symbols!!!!!

A

?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Describe the characteristics of aircraft wire

A
  • Stranded Cu (flexible)
  • 19 strands
  • MIL
  • Will not break due to VIBRATION
  • Bigger #, SMALLER wire
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Considerations for wire size

A
  • Current
  • V Drop
  • Chart (V, ft, Amp)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What 2 metals make up solder?

A

Tin and Lead

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is a procedure for reliable solder joints?

A

Clean with:

  • Water
  • Flux
25
Q

What is FLUX?

A
  • Removes SURFACE OXIDES
  • Reduce SURFACE TENSION
  • Wetting
26
Q

Bend radius of a wire bundle should not be more than?

A

10x the OUTSIDE diameter of the LARGEST wire in the bundle

27
Q

Describe wire bundle spacing

A
  • Standoff/spacers
  • Separate new and old
  • Separate from COAX, fluid, controls
28
Q

Describe wire and cable clamping requirements

A
  • Adel/P clamps
  • Metal/Synthetic
  • ZERO wire
  • LIMITED coax/RF
29
Q

Describe wire bundle spacing through a bulkhead

A
  • Grommets (1/4)

- Conduit

30
Q

Describe terminals?

A
  • Electrical connection at END of a wire

- Not exceed 4

31
Q

Describe splices

A

Joins 2 stripped wires

32
Q

What are the splice colour codes?

A
  • Red (18-24)
  • Blue (14-16)
  • Yellow (10-12)
33
Q

Requirements for ELECTRICAL TERMINATION

A
  • Proper size and crimping tools

- Don’t exceed 4 connections

34
Q

Lab tools??

A

Know what they are and what they look like

35
Q

Describe requirements for splicing

A
  • No more than 1 splice per wire segment
  • Not withing 12” of termination
  • Outside of bundle
  • Should not be one on top of other
36
Q

What is grounding?

A

Connecting conductive things to to other conductive things to complete a CIRCUIT

37
Q

What is bonding??

A

Connecting things together via rivets/bolts

38
Q

What is shielding??

A
  • Conductive braids
  • Continuous to ground
  • Grounds EMFs to not interfere
39
Q

What is the difference between GROUNDING and BONDING?

A

??

40
Q

Minimum resistance for a ground/bond?

A

Don’t exceed 0.003 Ohms

41
Q

Describe aircraft wire identification #/N

A
  • Last number is GAUGE

- N = GROUND wire

42
Q

Identify proper clamping procedures

A
  • Must not cause movement of clamp
  • Brackets ensure clamp placement
  • If bulkhead clearance less than 3/8 use grommet
43
Q

Describe a wire extractor extortion tool?

A
  • Use appropriate when removing contacts

- Have on hand prior to locking

44
Q

What is Dry cell?

A
  • Primary

- Disposable

45
Q

What is a wet cell??

A
  • Secondary

- Rechargeable

46
Q

What is the between dry and wet?/

A

One is rechargeable

47
Q

What determines VOLTAGE of a battery?

A

TYPE of material used

48
Q

What determines the CURRENT of the battery?

A

AMOUNT of material used (AREA of plates)

49
Q

What determines the capacity of the battery??

A

Current delivered over TIME

50
Q

What term describes BATTERY CAPACITY??

A

AMPERE/HR

51
Q

A battery rated at 50AH can deliver 5A for how many hours?

A

10 hours

52
Q

Describe OCV and CCV?

A
  • Internal Resistance
  • OCV no load (high)
  • CCV with load
53
Q

What are the 3 functions of a battery?

A
  • engine/APU starts
  • 30min emergency
  • Additional current for high loads
54
Q

What is the OCV of a LEAD ACID battery?

A

2.1 v

55
Q

Describe a negative and positive plate?

A
  • Grid/Active material
  • Negative Plate (spongy lead, gray)
  • Positive Plate (peroxide, brown)
56
Q

What are the safety precautions of a lead acid battery??

A
  • Protection

- Baking soda

57
Q

Basic procedure for charging a lead acid battery?

A
  • Remove VENT CAPS
  • Add electrolyte/water
  • SG of each cell
  • Charger
58
Q

Definition of specific gravity

A
  • Density of ELECTROLYTE compared to WATER

- Hydrometer

59
Q

SG of fully charged LEAD ACID?

A
  • Check SG of ELECTROLYTE

- 1.3

Power Gen Review (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions