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Electric > Final > Flashcards

Final Flashcards

1
Q

What does NEMA stand for?

A

National electrical manufacturers association

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2
Q

What does IEC stand for?

A

International electro technical commission

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3
Q

What does NEC stand for?

A

National electric code

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4
Q

What does UL stand for?

A

Underwriters laboratory

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5
Q

What does GFCI stand for?

A

Ground fault circuit interrupter

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6
Q

What does AFCI stand for?

A

Arch fault circuit Interruptor

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7
Q

What do we make a motor run?

A

Motor starter

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8
Q

On 2 start stop stations wired together how are the start and stop buttons wired?

A

Start buttons are wired in parallel and the stop buttons are wired in series

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9
Q

How many overloads are on a 3 phase motor starter?

A

3 overloads

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10
Q

What kind of buttons are E-stops?

A

Maintained

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11
Q

What kind of buttons are start buttons?

A

Momentary

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12
Q

Instead of a 3 bend saddle what can we use in conduit?

A

2 offsets back to back

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13
Q

How many 90s can you have in a row in conduit?

A

3

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14
Q

What should you always check for when trouble shooting?

A

Source voltage

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15
Q

What should you read when megging phase to phase?

A

0.0

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16
Q

What should you read megging phase to ground?

A

.5 with 550 being a perfect reading

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17
Q

How do you change direction in a DC motor?

A

Switch polarity

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18
Q

What single phase motor needs a boost to start?

A

Single phase capacitor start

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19
Q

What do we use to make a permanent connection in a motor?

A

Split bolts or ring terminals

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20
Q

What should you read hot bus to hot bus in a load center?

A

240 vac

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21
Q

What does SPST stand for?

A

Single pole single throw

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22
Q

What does DPDT stand for?

A

Double pole double throw

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23
Q

How many sign waves are in a 3 phase motor?

A

3

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24
Q

How many degrees are the sign waves away from each other?

A

120 degrees

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25
Q

What configuration do we wire anything under 20 HP?

A

Y connection

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26
Q

What configuration do we wire anything over 20 HP?

A

Delta

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27
Q

If you read 18 volts or something low on a circuit what are you reading?

A

Ghost voltage

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28
Q

When is eddy current a good thing?

A

On an inductive proximity switch

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29
Q

What is the water tight fitting that’s screwed into a box?

A

Meyers hub

30
Q

2 types of AC voltage?

A

Single and 3 phase

31
Q

When touching meter leads together what are you reading?

A

Continuity

32
Q

What does a red box indicate?

A

480 vac

33
Q

What does a black box indicate?

A

250 vdc

34
Q

What does a black and yellow striped box indicate?

A

250 DC cranes

35
Q

What does a grey box indicate?

A

120/240 vac

36
Q

In a series circuit what does voltage and amps do?

A

Voltage drops, amps stay the same

37
Q

What does current and voltage do in a parallel circuit?

A

Current drops and voltage stays the same

38
Q

How are lights wired in a circuit?

A

In parallel

39
Q

What do we call it when you have a lot of grounds?

A

Clean power

40
Q

Which side of the GFCI do we protect out of?

A

The load side

41
Q

What wire goes to the silver screw on a receptacle?

A

White (neutral)

42
Q

What wire goes to the gold screw on a receptacle?

A

Black (hot)

43
Q

What wire never goes to a switch?

A

Neutral

44
Q

What should you read phase to ground on a 3 phase disconnect?

A

277 vac

45
Q

With your meter in OHMS, what should you read phase to phase?

A

1 or above

46
Q

What symbol represents OHMS?

A

Omega symbol

47
Q

What is voltage measured in?

A

Volts

48
Q

What is current measured in?

A

Amps

49
Q

What is resistance measured in?

A

Ohms

50
Q

What state is a stop button always in?

A

Normally closed

51
Q

What phase is a control transformer?

A

Single phase

52
Q

What is wired into a motor if it is needed to be ran in auto?

A

A selector switch

53
Q

What is used in a motor starter to tell you that the motor is running?

A

A pilot light

54
Q

How many receptacles can be on a 20 AMP breaker?

A

10

55
Q

Lights get wired with what gauge wire?

A

14

56
Q

Receptacles get wired with what gauge wire?

A

12

57
Q

After changing a motor out what should you always do?

A

Bump test

58
Q

3 types of motors?

A

Single, 3 phase and DC

59
Q

What is the initial surge of current to get a motor started?

A

In rush current

60
Q

What does FLA stand for?

A

Full load amps

61
Q

The size of the starter is determined by what of the motor?

A

Horse power

62
Q

What is it referred to when a capacitor is discharged in a motor?

A

Shortage

63
Q

What can we add for multiple connections in a load center?

A

Terminal strip

64
Q

What 3 things make up an electrical circuit?

A

Source voltage, switches and a load

65
Q

Anything over 120 volts what ppe do you have to wear?

A

Arch flash gear

66
Q

What is the voltage supplied to a control transformer?

A

480 VAC

67
Q

Wearable part of a DC motor?

A

Brushes

68
Q

What does a megger read on a motor?

A

The insulation value

69
Q

What does colored wire indicate in a motor starter bucket?

A

Control voltage

70
Q

What does a DC motor act as with no power applied?

A

A generator

71
Q

What protects the secondary side of a control transformer?

A

A control fuse

72
Q

What is wired into a circuit to supply power to something else?

A

A control relay

Electric (1 decks)

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