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Electrical Personal > Test 1 > Flashcards

Test 1 Flashcards

1
Q

What voltage do you read in a load center hot buss to hot buss?

A

240vac

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2
Q

What does HP stand for

A

Horse power

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3
Q

What is the low voltage side of the transformer?

A

Secondary side

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4
Q

What does NEMA stand for?

A

National Electrical manufacturers association

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5
Q

What does DC stand for?

A

Direct current

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6
Q

What does NC stand for?

A

Normally closed

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7
Q

X2 should always be _______ on a control transformer?

A

Neutral

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8
Q

Draw normally open control tips

A
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9
Q

What four things make up an Electric circuit?

A

Wire
Load
Switching element
Source voltage

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10
Q

What is the wearable parts of a DC motor?

A

Brushes

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11
Q

Changing ______ ______ of the three leads on a VAC motor will change rotation

A

Any two

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12
Q

The _____ ______ will give you the info of the motor

A

Name plate / data plate

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13
Q

FLA stands for?

A

Full Load Amps

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14
Q

Four types of motors?

A

Three phase
Dc
Single phase
Single phase capacitor start

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15
Q

Size of motor starter is determined by what?

A

Horsepower of the motor

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16
Q

A __________ can be temporarily used to fix a electrical issue

A

Jumper

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17
Q

Draw the symbol for a fuse.

A

——
| |
——-
| |
| |
| |
——
| |
——

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18
Q

What is used to protect the wire tag?

A

Back taping

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19
Q

DC motor acts as a _________ if it is turned with no power supply.

A

Generator

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20
Q

Can you be shocked by a generator?

A

YES

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21
Q

The initial surge of power going out to the motor until it comes up to speed?

A

In rush current

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22
Q

Device that provides an adjustable time period to perform a function?

A

Timing relay

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23
Q

Symbol for ohms?

A

Omega sign

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24
Q

What should a float switch for a sump pump be wired in when in the pit?

A

Normally open

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25
Q

Home wire?

A

Romex

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26
Q

What wire gauge for lighting circuit?

A

14 AWG

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27
Q

Control transformer should be wired?

A

Single phase

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28
Q

How many receptacles on a 20 amp circuit

A

10

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29
Q

AC stands for

A

Alternating current

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30
Q

What protects motor from high current?

A

Overloads

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31
Q

What do we do to a motor to check proper rotation?

A

Bump test

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32
Q

How much voltage is supplied to a control transformer ?

A

480vac

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33
Q

IEC stands for?

A

International electrotechnical commission

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34
Q

What gauge wire for receptacle circuit?

A

12 AWG

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35
Q

What wire never goes to a switch?

A

Neutral

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36
Q

Voltage must be supplied to the _____ of a magnetic starter so that the moveable tips close and supply power.

A

Coil

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37
Q

AWG stands for?

A

American wire gauge

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38
Q

What protects other receptacles?

A

GFCI

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39
Q

Used to keep motor running without holding start button?

A

Seal in tips

40
Q

Stop button at resting state?

A

Normally closed

41
Q

Used to protect control transformer?

A

Control fuse

42
Q

Used to make a motor run?

A

Motor starter

43
Q

What wire is landed on gold screw?

A

Hot

44
Q

A _____ takes 480 vac to 240vac

A

Transformer

45
Q

A _______ reads insulation value of a motor or wire?

A

Megger

46
Q

To change direction on a DC motor?

A

Change polarity

47
Q

What type motor needs a boast to get going?

A

Single phase capacitor start

48
Q

How the capacitor in a single phase capacitor start motor is discharged?

A

Shorted

49
Q

480 vac high voltage transformer is wired how?

A

123

4 5 6
7 8 9

50
Q

What do you use for future wire pulls?

A

String

51
Q

What size breaker on a receptacle circuit?

A

20 amp

52
Q

20 HP and above motor is wired how?

A

Delta

53
Q

Draw a normally open start button

A
54
Q

RPM stands for?

A

Revolutions per minute

55
Q

A good motor will read what phase to phase?

A

.1 or above ohms

56
Q

What do we use to show motor is off or on?

A

Indicating light

57
Q

Multiple start buttons should be wired in?

A

Parallel

58
Q

What size wire for dryer or range?

A

10 AWG

59
Q

If motor is need to be wired in auto or manual / jog we use what?

A

Selector switch

60
Q

A ________ ________ is Wired into the circuit to control power to another component in the circuit.

A

Control relay

61
Q

Green or bare wire?

A

Ground

62
Q

What goes between three way switches to connect them?

A

Travlers

63
Q

Colored wire in a motor starter bucket indicates what?

A

Control voltage

64
Q

One phase of three phase is lost motor is humming is called what?

A

Single phasing

65
Q

E stop is what type of button?

A

Maintain type

66
Q

Start button is what type button?

A

Momentary type button

67
Q

Under 20 hp motor is wired in what?

A

Wye

68
Q

How many overloads to protect a three phase motor?

A

Three

69
Q

How many amps does a 1500 watt 120vac heater draw?

A

12.5 amps I = p/e

70
Q

Draw a stop button

A
71
Q

Multiple stop buttons should be wired how?

A

Series

72
Q

480 VAC low voltage motor?

A

456

T1-1/7
T2 - 2/8
T3 - 3/9

73
Q

Draw normally closed set of contact tips.

A
74
Q

What do you read on megger phase to ground for good motor?

A

550 M Ohms

75
Q

What do you read on megger phase to phase?

A

0.0 M ohms

76
Q

What does NEC stand for?

A

National electric code

77
Q

Red box indicates what?

A

480vac

78
Q

Black box indicates what?

A

250vdc

79
Q

Black box with yellow stripes indicates what?

A

250vdc crane

80
Q

Grey box indicates what?

A

120/240 vac

81
Q

10 AWG = 35 amps with 30 amp breaker dryer / range

12 AWG = 25 amps with 20 amp breaker
Receptacle

14 AWG = 20 amps with 15 amp breaker
Lights

A
82
Q

Receptacles that are going to be protected should be wired on the ________ side of the GFCI.

A

Load

83
Q

What PPE must be worn when testing a live power source?

A

Arc flash

84
Q

Pushing a fish tape toward a live power source, what precautions should be taken?

A

Piece of wood / cardboard / tape up wires

85
Q

When checking a circuit with the power off to the circuit, your meter should be set on _____ to check the circuit.

A

OHMS

86
Q

Troubleshooting the circuit hot is best to check for.

A

Source voltage

87
Q

What voltage is supplied to a control transformer?

A

480vac

88
Q

High voltage side of the transformer?

A

Primary

89
Q

The _____ _____ should be hooked up to a gold screw on a receptacle?

A

Hot wire

90
Q

A _____ ____ is a central location that distributes Electric through a home?

A

Load center

91
Q

NO stands for?

A

Normally open

92
Q

A green or bare copper wire should always be used as a _____ ?

A

Ground

93
Q

When using your personal meter while checking a good motor, you will get a reading of ________ while reading phase to ground.

A

OL (open loop)

94
Q

To change the direction of a DC motor, you can change the __________.

A

Polarity or armature

95
Q

_________ is performed to find electrical fault or issues in a circuit

A

Troubleshoot

Electrical Personal (3 decks)

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