Nlc Lineman 2

Front 1

the method used to generate power varies from

____ ____ ____ ____ ____

Back 1

steam

hydroelectric

wind

distributed generation

combustion engine/turbine

Front 2

steam is a common method of producing electrical energy electrical energy high pressure steam is produced by ____ ____ ____ ____

Back 2

fossil fuel

nuclear

geothermal

solar

Front 3

sources of fossil fuels include ___ ___ ___

Back 3

coal

petroleum

natural gas

Front 4

What is Cogeneration

Back 4

also known as combined heat and power

heat from steam is captured for another useful purpose such as heating

Front 5

high heat is used to boil water and create steam pressure levels can reach level from ____ to ___

Back 5

2400 - 3500

Front 6

______ is burned in a furnace to produce the high heat heat needed to boil water the water is converted to the high pressure steam needed to spin the turbine

Back 6

Cole generation

Front 7

_______ is a fossil fuel formed from the decaying matter of buried plants, animals, and other gases. the gas is harvested and is fired in a natural gas combustion turbine, which spins a generator

Back 7

Natural Gas

Front 8

combined cycle generation

Back 8

the hot exhaust from the a turbine is used to produce steam which can spin an additional steam turbine connected to another generator this process is called

Front 9

____ generation involves the heating of oil in a boiler, which also boils water into a high-pressure steam.

Back 9

crude oil

Front 10

______ are fed into a reactor core to achieve nuclear fission which produces extreme heat water is used to cool the reactor but turns into steam during the process steam turns the generator and is then condensed back in to water where it returns to the reactor to cool it

Back 10

control rods

Front 11

Approximately ___ of the electrical energy produced in the US today derives form nuclear-fired generation facilities

Back 11

20%

Front 12

____uses natural heat from geysers of hot springs to produce steam by using an injection well to pump cool water into the molten rock beneath the earths surface where it turns to steam

Back 12

geothermal generation

Front 13

What are the two methods of solar generation

Back 13

Photo-voltaic and Parabolic

Front 14

Photovoltaic

Back 14

Uses semi-conducting solar panels to produce electrical power in the form of direct currect

Front 15

Parabolic

Back 15

harnesses the heat energy from the sun to heat up salt to a molten state and then the molten salt passes through a boiler where high pressure steam is produced

Front 16

uses biological materials such as wood chips, sugarcane, switch grass, etc.

Back 16

Biomass

Front 17

there are two basic methods of obtaining mechanical energy using water. turbines connected to generators are rotated using the energy from gravity fed water is used to create the mechanical energy or

Back 17

a hydroelectric dam which the water is backed up into a reservoir then channeled through a tube like opening called a penstock where it passes across the blades of a turbine

Front 18

what is a nacelle

Back 18

the housing surrounding the whole wind unit , it can rotate where the blades can face the wind.

Front 19

heat created by diesel engines can be used in what is called ___

Back 19

combined heat and power- meaning both heating and electricity can be consumed

Front 20

One fundamental law of physics states

Back 20

that energy can be converted but cannot be created of destroyed

Front 21

in an ac generator some form of energy is converted to _____

Back 21

mechanical motion

Front 22

examples of heat energy

Back 22

Light bulbs

toasters

electric ovens

Front 23

The law of charges states

Back 23

That like charges repel and opposite charges attract

Front 24

in ac circuits terms positive and negative refer to?

Back 24

the direction of current flow in a conductor

Front 25

Polarity is? away is __ towards is __

Back 25

if the voltage cause electrons to flow away or towards a generation source

towards -

away +

Front 26

Strength of voltage depends on ___ ___ & ___

Back 26

-the number of turns in the coil of wire

-the strength of the magnetic field

-the speed at which the magnetic lines of flux pass through the coil

Front 27

in order for a generator to produce one bolt a single conductor must pass through 100,000,000 lines of flux in how much time

Back 27

1 second

Front 28

What is a sine wave

Back 28

a graphical repersentation of what is happening to voltage in an AC circuit over a period of time

Front 29

After a generator has rotated 90 degrees 1/4 of a turn the voltage has reached

Back 29

peak positive value

Front 30

After a generator has rotated 180 degrees 1/2 of a turn the voltage has reached

Back 30

decreased to zero

Front 31

After a generator has rotated 270 degrees 3/4 of a turn the voltage has reached

Back 31

peak negative value

Front 32

After a generator has rotated 360 degrees 1 full turn the voltage has reached

Back 32

returned to zero

Front 33

cycle

Back 33

one rotation of a generator is also referred to as

Front 34

frequency

Back 34

the number of times that a generator rotates in one second is known as the

Front 35

what is hertz

Back 35

the unit of measure for frequency

Front 36

US and Canada use ___ Hz

Back 36

60

Front 37

a sine wave has a peak voltage of 7200 volts what is the voltage after 45 degrees of rotation?

Back 37

7200sin(45) = 5091.16

Front 38

A sine wave has a peak voltage of 7200 volts what is the voltage after 210 degrees of rotation?

Back 38

7200sin(210) = -3600

Front 39

the voltage is actually at its maximum value for very little time and falls to zero ___ times

Back 39

3

Front 40

what does RMS stand for

Back 40

root mean square

Front 41

What value is given on most volt meters

Back 41

RMS

Front 42

to get the RMS value

Back 42

.707 x peak voltage

Front 43

to get the peak value

Back 43

1.414 x RMS

Front 44

Alternating current circuits have 3 types of loads

Back 44

Resistive

inductive

capacitive

Front 45

examples of resistive load

Back 45

electrical heating equipment , incandescent lighting

Front 46

examples of inductive load

Back 46

induction motors, transformers

Front 47

examples of capacitive load

Back 47

synchronous motors, capacitors

Front 48

what is in phase

Back 48

the voltage and current rise and fall at the same times they are said to be

Front 49

what is out of phase

Back 49

if the current and voltage rise and fall at different times

Front 50

What is the phase angle relationship between current and voltage

Back 50

weather they are in or out of phase

Front 51

what type of phase angle realationship is purely resistive

Back 51

in phase

Front 52

____ exists in an ac circuit only when the load is purely resistive

Back 52

true power

Front 53

when the load is capacitive or inductive the current and voltage are

Back 53

out of phase

Front 54

what type of generation is typically located at the point of consumption

Back 54

distributed generation or dispersed micro generation or distributed energy resources

Front 55

explain how a magnet near a conductor produces a current

Back 55

electron will first rush away from the negative pole of the magnet creating a positive voltage, as the rotation continues the electrons will rush back toward the positive pole of the magnet

Front 56

OSHA has minimum guidelines for the use and care of ropes that can be found under standard ____

Back 56

1926.251

Front 57

3 most common types of rope

Back 57

Natural fiber

synthetic fiber

wire

Front 58

has limitations because it is subject to rot and many companies prohibit its use entirely

Back 58

Manila

Front 59

OSHA requires natural fiber ropes to be immediately removed from service if any of the following conditions exist

Back 59

abnormal wear

powdered fiber between strands

broken or cut fibers

variation in the size or roundness of strands

Front 60

Synthetic fiber rope: __ __ __ __ __

Back 60

-has high weight to strength ratio

-absorbs very little moisture

-does not stiffen when wet

-has good dielectric properties when clean & dry

-is resistant to damage caused by water and mildew

Front 61

A synthetic rope can be ____times stronger than manila rope of the same diameter

Back 61

2 - 1/2

Front 62

Duraplex 1/2" has a CBS of

Back 62

6700 lbs

Front 63

Tenex 1/2" has a CBS of

Back 63

11,800 lbs

Front 64

_____ rope has limitations because it is subject to rot, and many companies prohibit its use entirely

Back 64

Manila

Front 65

Wire rope is made of steel and comes in 3 basic grades which are

Back 65

Mild Plow(weakest)

Plow

Improved Plow(strongest)

Front 66

when is wire rope avoided

Back 66

any work involving energized conductors and apparatus

Front 67

At a minimum proper care of rope should include the following __ __ __ __

Back 67

-ropes should be clean and dry when stored

-ropes should be hung in neat coils no twists or kinks

-debris should be removed at every opportunity

-avoid chemicals that may weaken strength

Front 68

average force required to break a rope

Back 68

CBS catalog breaking strength

Front 69

max load that should ever be applied to rope

Back 69

WLL working load limit

Front 70

how to calculate WLL

Back 70

CBS must be divided by 5

Front 71

Design factor

Back 71

5

Front 72

what is the weakest part of the rope

Back 72

knot or splice

Front 73

what occurs when ropes are subject to severe exposure condition

Back 73

Dynamic loading

Front 74

examples of dynamic loading

Back 74

-shock loading

-excessive use

-exposure to high temperatures

-extended periods under load

Front 75

the standing part

Back 75

what is the longest part of the rope

Front 76

the running end

Back 76

the free end of a rope used to form a knot

Front 77

what is the bight

Back 77

is the loop formed by placing the running end of the rope parallel to the standing part of the rope

Front 78

king of knots

Back 78

bowline

Front 79

efficiency rating for eye splice

Back 79

95%

Front 80

efficiency rating for short splice

Back 80

90%

Front 81

efficiency rating for bowline

Back 81

65%

Front 82

efficiency rating for clove hitch

Back 82

60%

Front 83

efficiency rating for square knot

Back 83

60%

Front 84

efficiency rating for knots that coke

Back 84

50%

Front 85

three square not variations that should not be used

Back 85

thief , granny, and grief

Front 86

when is the bowline used

Back 86

when a temporary eye is needed , easy to untie after heavy strain

Front 87

when is a running bowline used

Back 87

when a choke is needed such as temporary guy or tagging a suspended load

Front 88

when is a bowline on the bight

Back 88

used when a temporary eye is needed and the rope is too long

Front 89

when is a clove hitch used

Back 89

to fasten a rope around an object

Front 90

when is a square knot used

Back 90

used for securing a rope or line around an object

Front 91

when is a sheet bend used

Back 91

useful for joining different sizes of rope temporarily

Front 92

when is a slip knot used

Back 92

hoisting tools and materials , difficult to untie after heavy loads

Front 93

when is a grunt knot used

Back 93

to tie items onto a hand line when a hook is not available