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Journeyman Test > Journeyman Test > Flashcards

Journeyman Test Flashcards

1
Q

Define a clearance

A

An assurance from a switching authority that a specified power system is isolated and will not be ordered re energized until that worker reports the crew in the clear and the equipment ready for service

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2
Q

What is required before a clearance

A

Visual opens and tags

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3
Q

How to obtain a clearance

A

Call dispatch give name company name time and circuit number and tell them you are requesting a clearance at your location and your tagged open points

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4
Q

How are capacitors hooked up

A

Series in substations parallel in distribution circuits

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5
Q

What are discharge resistors

A

Located inside capacitors to discharge capacitance

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6
Q

How do you take a capacitor offline

A

Load break cut outs open
Remove high sides
Wait five minutes
Test and ground high sides
Shunt high sides

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7
Q

What are capacitors rated in

A

Kvars

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8
Q

What is capacitance measured in

A

Ferrads

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9
Q

How do you take a regulator bank off line

A

Turn scada off
Set to manual
Step to zero
Verify neutral 3 ways (light,tester,dial)
Pull motor fuse
Close bypass
Open source and load disconnects
Turn reg bank controls to off

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10
Q

What is a reclosure and how does it work

A

A device that senses fault current and will open a line but will close back and will open a line but will close back in on the fault around 3 times until the fault is cleared or the recloser will stay in the open position can also be set to one shot capabilities in the event there is a worker on the line

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11
Q

What is a hotline hold

A

A setting option on a recloser that is a “trip sensitive” setting meaning in the event of any type of fault the recloser will open the line incredibly quickly used when doing hot work generally

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12
Q

What is an eye splice good for

A

90% of the ropes breaking strength

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13
Q

What is the current on a series street light circuit

A
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14
Q

What are fiberglass sticks tested at

A

100kv for five minutes per foot

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15
Q

What are wood hot sticks tested at

A

75000 volts per foot for five minutes

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16
Q

What is required after 4 ft of climbing

A

100% tie in

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17
Q

How many secondary bushings on cans 100kva and above

A

4

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18
Q

A customer has a 10hp motor what size can is needed

A

7.5 kva

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19
Q

What should you do before pulling a bayonet fuse

A

Pull the bleeder valve

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20
Q

How much weight can you put on a latter

A

2.5 times the weight of the latter

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21
Q

Ohms law ?

A

E=I(R)

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22
Q

Why should transformers have similar resistance

A

The lower resistance can will carry all of the load causing the other to overheat

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23
Q

What is a lighting arrestor

A

A device that diverts over current to ground protecting the equipment it is in parallel with

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24
Q

Means of re energization

A

Lightning back feed induction accidental contact with energized lines occurring from a car hit pole for example or accidental energization from human error

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25
Q

Mad on 13.2

A

2 ft 3

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26
Q

Mad on 34.5

A

3 ft

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27
Q

Mad on 115

A

3 ft 9

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28
Q

Mad on 230

A

6 ft 2

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29
Q

What is considered high voltage

A

600 volts

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30
Q

Define a neutral

A

A current carrying conductor at ground potential tied to the substation ground grid and serves as a return of the imbalance of the system

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31
Q

How to find guy tension

A

Guy length divided by anchor lead times the line tension

32
Q

What are five things a lineman can do alone

A

Refuse cut outs with a hot stick
Operate switch with handle or hot stick
Install or remove hot tap (not dropping or picking up load)
Remove load metering device
Emergency repair to keep public safe

33
Q

Define climbing space

A

A Clear section of the pole to climb and avoid hazards

34
Q

Define an EPZ

A

A parallel shunt placed around the worker to keep fault current at an acceptably low level traveling through the worker

35
Q

What happens when you ground one phase on a delta line

A

Nothing will happen if there are no other grounds on the line your allowed one ground on a delta system

36
Q

1 HP is equal to how many watts

A

746 watts

37
Q

Difference between k fuses and T fuses

A

Quick
Times

38
Q

Why must switches be timed properly

A

If one switch opens quicker than the others a massive amount of arcing can occur

39
Q

How does a sectionilzer work

A

Works in conjunction with a recloser down stream to isolate a section of line. Will not open under load but can pick up load

40
Q

Two types of electrical contact

A

Direct and indirect

41
Q

How do you find guy length

A

A2+b2=c2

42
Q

What are the minimum amount of wraps on a wire drum

A

4 wraps

43
Q

Define voltage

A

Electrical pressure wich is a force that pushes current

44
Q

What is ohms law

A

1 volt will push 1 amp through 1 ohm of resistance

45
Q

Define electrical frequency

A

Number of complete wave forms completed in one second unit of measurement

46
Q

What is a recloser and how’s it work

A

A recloser is a device that senses and interrupts fault current and automatically restores the power up to three times if the fault is not cleared it will stay open. Also has one shot capabilities used when workers are on the line

47
Q

How would you use a rotation meter and why

A

Three phase secondary applications. Take each leg of the three phase motor to the hot secondary legs taped and identified properly to find rotation to either match that rotation with a new bank you are installing or to make sure you are giving the customer the required rotation

48
Q

What is on a tailboard

A

Hazards energy source controls work procedures special precautions ppe

49
Q

What is skin effect

A

92 percent of electrons travel on outside of conductor

50
Q

What is a radial feed

A

Only one place where source voltage can originate

51
Q

What is a loop feed

A

Two or more places where source voltage can originate from

52
Q

When are ground required

A

De energized lines where nominal voltage is 600 volts and up

53
Q

What must a ground rods resistance be

A

25 ohms

54
Q

What is a rotation meter

A

A three phase motor used to identify phasing sequence

55
Q

What is step potential

A

The difference of potential between two points on the earth caused by gradient rings

56
Q

What is touch potential

A

The difference between an object and the potential of the ground

57
Q

How much more efficient is wye circuits over delta

A

73 percent more efficient

58
Q

Why is wye more efficient than delta

A

Higher voltage and less amperage

59
Q

What are the four sagging methods

A

Return wave targets transit and dyno

60
Q

What are d rings rated for

A

5,000 pounds

61
Q

What class are hard hats

A

Class e

62
Q

Can you rubber glove 5kv

A

Yes

63
Q

Why does a gang switch have a ground mat

A

To create an epz around the worker

64
Q

What is Carona

A

Tendencies of electrons to leave a conductor at high voltages due to sharp objects

65
Q

What is the nominal voltage of a pt

A

120 volts

66
Q

How many amps are on the low side of a pt

A

5

67
Q

What is ocb

A

Oil circuit breakee

68
Q

What has more windings on a step down transformer

A

The primary side

69
Q

What has more windings on a step up transformer

A

The secondary side

70
Q

How do you find approximate dead end tension

A

Ubs of wire divided by safety factor of five

71
Q

How do you find if a transformer is over or under loaded

A

e(I)/1000

72
Q

How do you find power factor

A

Generation/load

73
Q

What is current

A

Flow of electrons through a conductor

74
Q

What is resistance

A

Opposition of current flow

75
Q

What is an automatic transformer

A

Transformers with Load capable tap changers with one series coil commonly found in substations

Journeyman Test (1 decks)

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