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Electrical Foundations (Occupational Core) > Line C > Flashcards

Line C Flashcards

1
Q

List three types of single-line diagrams.

A

Schematic, block, riser

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2
Q

Which of the following is not a single line diagram?

a. block diagram
b. riser diagram
c. wiring diagram
d. one-line diagram

A

c. wiring diagram

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3
Q

The main function of a block diagram is to show

a. how to wire a circuit
b. where to install the electrical blocks
c. the major components in the circuit
d. how the circuit works

A

c. the major components in the circuit

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4
Q

A power riser diagram is used to:

identify the power source for a circuit.

show the incremental power increases within a circuit.

identify electrical devices on each floor of a building.

show how electrical power is distributed throughout a building.

A

show how electrical power is distributed throughout a building.

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5
Q

List three conventions for designing a schematic diagram (LT6, ST2)

A

Show the power source at the top of the page
Arrange the components from left to right
Identify each of the components with a reference designation

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6
Q

The main function of a schematic diagram is to show:

a. how to wire a circuit
b. where to install the electrical blocks
c. the major components in the circuit
d. how the circuit works

A

d. how the circuit works

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7
Q

A schematic diagram shows the electrical relationship between components in a circuit, while a wiring diagram shows how components are actually wired.

A

true

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8
Q

In order to convert a wiring diagram into a schematic diagram, what is a preferred method of identifying the various wires? (LT6, ST2)

A

Use a numbering system to identify each of the wires and associated terminals

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9
Q

The main function of a wiring diagram is to show:

a. how to wire a circuit
b. where to install the electrical blocks
c. the major components in the circuit
d. how the circuit works

A

a. how to wire a circuit

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10
Q

The main advantage of a wiring diagram over a schematic diagram is that it is simpler.

True or False?

A

False

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11
Q

What is the main advantage of a pictorial drawing? (LT7, ST3)

A

The main advantage of a pictorial drawing is that it gives a quick mental image of what an object actually looks like.

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12
Q

What is the schematic symbol for a single cell battery?

A

-I I-

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13
Q

Name the three main types of pictorial drawings. (LT7 ST3)

A

oblique
isometric
perspective

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14
Q

What is a two-point perspective? (LT7, ST3)

A

a perspective with two vanishing points

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15
Q

Because of certain advantages, what type of pencil is often preferred for drawing diagrams

A

Mechanical pencil

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16
Q

Indicate which of the following attributes apply to pictorial drawings and which apply to two-dimensional orthographic projections. (LT7, ST3)

a. shows object as it really appears
b. distorts at least part of an object
c. shows only one surface at a time
d. shows the true shape of an object

A

Pictorial drawing:

a. shows object as it really appears
b. distorts at least part of an object

Two-dimensional (Orthographic) drawing:

c. shows only one surface at a time
d. shows the true shape of an object

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17
Q

When drawing lines on diagrams such as schematics, what is the significance of a dashed line

A

It signifies a mechanical linkage or physical connection between components

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18
Q

To describe an object using two-dimensional orthographic projections, how many views are used? (LT7, ST3)

a. two
b. three
c. four
d. six
e. as many as needed

A

e. as many as needed

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19
Q

When drawing lines on diagrams such as schematics, what is the significance of a Heavy (thicker) line

A

Used for emphasis, such as a power circuit line compared to a control circuit line

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20
Q

What is an orthographic projection? (LT7, ST3)

A

An orthographic projection is a drawing that combines the top, front, left side, right side, back, and bottom views of an object on a single page.

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21
Q

Because orthographic projections are drawn to scale, it is not necessary to include dimensions. (LT7, ST3)

A

False

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22
Q

What is a template used for?

A

Used for drawing symbols, shapes or letters on a diagram

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23
Q

What is the significance of using a dot when drawing lines on a diagram?

A

signifies an electrical connection of multiple lines on a diagram

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24
Q

To show the information needed to actually fabricate an object, the best type of drawing is a(n): (LT7, ST3)

a. oblique pictorial
b. one-point perspective
c. orthographic projection
d. isometric pictorial
e. two-point perspective

A

c. orthographic projection

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25
Q

In electronic diagrams, what does a ground symbol signify?

A

used to identify a common point or connection within the circuit diagram

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26
Q

What is meant by a reference designation?

A

the use of a letter to identify a specific component in a diagram (often with an added number when there is more than one similar component)

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27
Q

From an electrician’s point of view, the main use of orthographic projection is for: (LT7, ST3)

a. detail drawings
b. plan drawings
c. schematic drawings
d. pictorial drawings

A

a. detail drawings

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28
Q

What is another name for a wiring diagram?

A

connection diagram

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29
Q

What are the two different types of wiring diagrams commonly used?

A

point-to-point and highway (trunk-line) type diagram

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30
Q

If a scale of 1:10 is used, the “1” represents the _____ (drawing or object?)
and the “10” represents the _____ (drawing or object?) . (LT8, ST4)

A 
1   = drawing
10 = actual object
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31
Q

What type of letters are normally used as a convention for drawings?
(LT8, ST4)

A

CAPITAL LETTERS

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32
Q

For drawings of most objects, what are the three types of dimensions?
(LT8, ST4)

A

size dimensions, location dimensions, and notation dimensions

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33
Q

list three conventions for designing a schematic diagram

A

Show the power source at the top of the page

arrange the components from left to right

identify each of the components with a reference designation

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34
Q

in order to convert a wiring diagram into a schematic diagram, what is a preferred method of identifying the various wires?

A

Use a numbering system to identify each of the wires and associated terminals

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35
Q

What is the main advantage of a pictorial drawing?

A

The main advantage of a pictorial drawing is that it gives a quick mental image of what an object actually looks like.

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36
Q

Name three main types of pictorial drawings

A

Oblique
isometric
perspective

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37
Q

What is a two-point perspective?

A

A perspective with two vanishing points

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38
Q

Indicate which of the following attributes apply to pictorial drawings and which apply to two-dimensional orthographic projections.

a. shows object as it really appears
b. distorts at least part of an object
c. shows only one surface at a time
d. shows the true shape of an object

A 
a = Pictorial
b = Pictorial
c= two dimensional
d= two dimensional
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39
Q

What is a working drawing? (LT9, ST5)

A

A working drawing is a drawing or a set of drawings that provides all of the information required to construct, assemble and take a project from start to finish.

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40
Q

to describe an object using two dimensional orthographic projections, how many views are used?

a. two
b. three
c. four
d. six
e. as many as needed

A

e. as many as needed

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41
Q

What is a detail drawing? (LT9, ST5)

A

A detail drawing provides the dimensions, views and notations to construct an object.

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42
Q

what is an orthographic projection?

A

an orthographic projection is a drawing that combines the top, front, left side, right side, back, and bottom views of an object on a single page.

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43
Q

Because orthographic projections are drawn to scale it is not necessary to include dimensions.

A

False

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44
Q

What is an assembly drawing? (LT9, ST5)

A

An assembly drawing provides a list of the parts and the views illustrating how the parts are put together to assemble an item.

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45
Q

to show the information needed to actually fabricate an object the best type of drawing is a (n):

a. oblique pictorial
b. one-point perspective
c. orthographic projection
d. isometric pictorial
e. two-point perspective

A

c. orthographic projection

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46
Q

A book is to a table of contents as a set of construction prints is to a(n): (LT11, ST7)

a. title block
b. note
c. index page
d. schedule

A

c. index page

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47
Q

What would a drawing numbered E3 be? (LT11, ST7)

A

the third drawing in the electrical division

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48
Q

Where would you look to find the name of the consulting engineer?
(LT11, ST7)

a. Index page
b. Notes
c. Title block
d. Specifications

A

c. Title block

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49
Q

1 If a scale of 1:10 is used, the “1” represents the (drawing or object?)

2 and the “10” represents the (drawing or object?)

A

1 = Drawing

2=object

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50
Q

what type of letters are normally used as a convention for drawings?

A

Capital letters

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51
Q

Where would you look to find the date that the most recent changes were made to a drawing? (LT11, ST7)

A

the top line of the revision box

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52
Q

for drawings of most objects, what are the three types of dimensions?

A

size dimension
location dimension
notation dimension

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53
Q

What is meant by the phrase “scaling the drawing”? (LT11, ST7)

A

Scaling the drawing means to find a dimension by measuring directly from a drawing and multiplying by the ratio used in the drawing scale.

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54
Q

What is the difference between a bay line and a grid line? (LT11, ST7)

A

Grid lines are evenly spaced to form a network of guidelines that appear on each drawing in the set of prints, while bay lines are often irregularly spaced to tie into particular features of the structure itself.

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55
Q

what is a working drawing?

A

a working drawing is a drawing or a set of drawings that provides all of the information required to construct assemble and take a project from start to finish

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56
Q

what is a detail drawing?

A

a detail drawing provides the dimensions, views and notations to construct an object

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57
Q

What is an assembly drawing?

A

an assembly drawing provides a list of the parts and the views illustrating how the parts are put together to assemble an item

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58
Q

what is the main purpose of a construction drawing?

A

the main purpose of a construction drawing is to convey information about how something is to be built or installed

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59
Q

Which option best describes a hidden line? (LT11, ST7)

a. thick solid line
b. thin broken line with equal dashes
c. thin broken line with unequal dashes
d. thin broken line with alternating long and short dashes
e. thin broken line with alternating dots and dashes

A

b. thin broken line with equal dashes

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60
Q

A line used to show that part of a view has been removed (usually because there is not enough room to show it all) is the: (LT11, ST7)

a. short break line
b. long break line
c. leader line
d. cut line
e. extension line

A

b. long break line

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61
Q

What is a blueprint?

A

a blueprint is an exact copy of a construction drawing.

62
Q

within each division of a set of prints is a set of ________ , which may include a site/plot plan, a plan drawing, one or more elevation and sectional drawings, and detail drawings.

A

working drawings

63
Q

The information shown on the electrical site plan is exactly the same as the information shown on the architectural site plan.

a. true
b. false

A

b. false

64
Q

the device used to produce master drawings on a computer is called a(n):

a. autoCAD
b. print copier
c. diazo printer
d. pen plotter

A

d. pen plotter

65
Q

according to the flow chart in figure 2 of learning task 4, who is responsible for preparing drawings for the electrical subtrades?

a. architect
b. consulting engineer
c. electrical engineer
d. none of the above

A

c. electrical engineer

66
Q

for what do each of the following use construction prints?

A. engineers

A

prepare drawings for the sub-trades

67
Q

for what do each of the following use construction prints?

b Estimators

A

determine material and labour requirements when preparing a bid

68
Q

for what do each of the following use construction prints?

construction workers

A

use construction prints during the construction phase of a project

69
Q

for what do each of the following use construction prints?

plant maintenance workers

A

use construction prints after construction is complete to make repairs or renovations

70
Q

name the five working drawings

A 
site/plot plan
plan drawings
elevation drawings
sectional drawings
detail drawings
71
Q

name the drawing described in each of the following

“… a front view of the north, south, east or west facing surface of a building”

A

elevation

72
Q

name the drawing described in each of the following

“…often drawn to a larger scale, this drawing shows a detailed view of a small part or component of the overall structure”

A

detail

73
Q

name the drawing described in each of the following

“….a top view of an entire property with the buildings drawn in their proper locations”

A

site/ plot plan

74
Q

name the drawing described in each of the following

“….shows the detail beneath the surface of an object or structure”

A

Section

75
Q

name the drawing described in each of the following

“…a drawing prepared as a record of a deviation from the original plan”

A

as built drawing

76
Q

name the drawing described in each of the following

“…a drawing prepared by a manufacturer that shows equipment to be installed in a building”

A

shop drawing

77
Q

name the drawing described in each of the following

“…a top view inside of a building”

A

floor plan

78
Q

the most frequently used drawing in a set of construction prints is the:

a. site/plot plan
b. architectural floor plan
c. working drawing
d. electrical floor plan
e. architectural elevation

A

b. architectural floor plan

79
Q

the reference or cut for a sectional drawing is shown on a(n):

a. elevation or floor plan
b. shop or detail drawing
c. reflected ceiling plan
d. site or plot plan
e. as-built drawing

A

a. elevation or floor plan

80
Q

shop drawings of equipment are prepared by the:

a. engineer
b. consultant
c. manufacturer
d. either a, b, or c
e. either b or c

A

d. either a, b, or c

81
Q

What is the purpose of an as-built drawing?

A

to keep a record of how a project was actually built. when it is necessary to renovate the building or make repairs, as-built drawings provide a valuable reference.

82
Q

A set of electrical working drawings usually includes five main types of drawings. name them.

A 
Site/plot plan
floor plan
elevation drawing
sectional drawing
detail drawing
82
Q

Who determines what information is included in a manual?

a. supplier
b. manufacturer
c. installer
d. end user

A

manufacturer

83
Q

Safety instructions are written to be followed to protect

a. installer
b. end user
c. equipment
d. all of the above

A

all of the above

84
Q

To find the location where power enters a property, it would be best to refer to the

a. site/plot plan
b. electrical floor plan
c. electrical elevation
d. sectional drawing

A

a. site/ plot plan

84
Q

Which part of the manual should be referred to in order to place conduits and wires for rough-in?

a. assembly
b. installation
c. operation
d. maintenance
e. troubleshooting

A

installation

85
Q

For multi-story buildings, there is usually at least one floor plan for each floor.

a. true
b. false

A

a. true

85
Q

Which part of the manual should be referred to determine if the equipment is capable of handling the rated load?

a. assembly
b. installation
c. operation
d. models

A

models

86
Q

You connect an unfamiliar piece of equipment. When you turn the machine on it takes time before it begins to work. In which section of the manual will tell you if this is a normal occurrence?

a. assembly
b. installation
c. operation
d. maintenance
e. troubleshooting

A

operation

87
Q

What is a legend? (LT11, ST7)

A

A legend is a list that identifies symbols and abbreviations used in a drawing.

87
Q

Which part of the manual will tell you how to keep the tool in best condition?

a. assembly
b. programming
c. operation
d. maintenance
e. troubleshooting

A

maintenance

88
Q

explain the difference between a floor plan and a reflected ceiling plan.

A

A floor plan shows the floor of a structure and a reflected ceiling plan shows the ceiling view.

88
Q

List the three words commonly used to highlight safety information?

A

Danger
Caution
Warning

89
Q

List three common uses of electrical sectional drawings.

A

Buried conduit and cable

ducts in a trench

stacking of conduit

89
Q

Why is it necessary to read the instructions for equipment you already have experience installing?

A

installation techniques change

90
Q

What is the difference between a general note and a special note? (LT11, ST7)

A

A general note applies to an entire drawing and a special note applies to a specific feature or area of the structure.

90
Q

List two common types of equipment that require programming

A

time clock, photocell, programmable relay, motor control sensors, fire alarm systems and components

91
Q

List three items of personal protective equipment

A 
Foot protection (steel-toed boots)
Eye protection (googles, face shields)
Lung protection (dust masks, respirators)
Hand protection
Head protection (hard hats)
Fall arrest equipment (safety harness)
Fuse pullers
Lock and scissor clips
92
Q

The line shown in Figure 3 is a:

a. visible line.
b. centre line.
c. short-break line.
d. long-break line.
e. broken line.

A

long-break line.

93
Q

In reference to construction prints, a schedule is a systematic method of: (LT11, ST7)

a. outlining when certain work must be performed
b. organizing appointments for architects and consulting engineers
c. outlining the general instructions and legal requirements of a job
d. presenting notes on a drawing in tabular form
e. listing the dates that drawings were completed and revised

A

d. presenting notes on a drawing in tabular form

93
Q

A single-line diagram:

shows only the line side of the loads.

is another name for a wiring diagram.

is drawn without lifting the pencil from the page.

shows how to wire a circuit.

A

shows only the line side of the loads.

94
Q

List three common schedules that are specific to the electrical trade. (LT11, ST7)

A

fixture schedule
panelboard schedule
transformer schedule

94
Q

Which symbol shown represents a switched-duplex receptacle?

A

b

95
Q

The diagram shown below is the CSA symbol for a/an:

pull box.

fluorescent light fixture.

exit light.

power panel.

A

fluorescent light fixture.

96
Q

Picture on page 90*

What does circuit number 39 on panelboard 1L serve? (LT11, ST7)

A

electric range

96
Q

Which symbol shown represents a buzzer?

A

b

97
Q

Which symbol shown represents a homerun to panel board?

A

d

98
Q

In a schematic diagram, components and devices are represented by:

blocks.

standard symbols.

simple pictorials.

circles of various sizes.

A

standard symbols.

99
Q

Block diagrams show the:

component size.

component location.

component relationships.

component’s terminals.

A

component relationships.

100
Q

The blocks used in a block diagram are:

all the same size.

different sizes.

wooden.

different shapes.

A

different sizes.

101
Q

CSA is short for:

Canadian Specialists Association.

Canadian Standards Association.

Canadians for Standard Action.

Canadian Science Association.

A

Canadian Standards Association.

102
Q

Which symbol shown represents a ceiling mounted lighting outlet?

A

d

103
Q

To identify components, the schematic diagram uses:

symbols.

pictures.

letters

numbers.

A

symbols.

104
Q

If you were installing a transformer and you needed to know where to make connections, it would be best to look at:

a wiring diagram.

a block diagram.

a riser diagram.

a schematic diagram

A

a wiring diagram.

105
Q

Pictures on page 100 and page 91*
Which of the panelboards at the east end of the corridor is server by the transformer located in the same corridor? (LT11, ST7)

A

Panelboard 5L

105
Q

If you come across an electrical term you do not understand in the Code:

check the definition section of the Code.

look it up in the dictionary.

use the index in the back of the Code.

ignore it.

A

check the definition section of the Code.

106
Q

The terms in the definition’s part of Section 0 of CEC are arranged:

in order of importance.

in special groups.

alphabetically.

with no regard to order.

A

alphabetically.

107
Q

The Code should be applied:

when the installation is completed.

into the design of the installation.

by the electrical tradesperson only.

after the installation is started.

A

into the design of the installation.

108
Q

Pictures on page 100 and page 89*
In reference to Figure 3 on the next page, the low-brightness downlights (specified as Gotham #8061) are served by which panelboard and circuits? (LT11, ST7)

A

Panelboard 5L, circuits 1 to 4

108
Q

Rule numbers in the “CEC” are typically:

four digit.

odd.

three digit.

even.

A

even.

109
Q

How many views of an object does a shop drawing normally show?

one

two

three

four

A

three

110
Q

Construction prints for most large to intermediate commercial projects include divisions for:

architectural, structural, mechanical, plumbing, and landscaping.

architectural, structural, mechanical, plumbing, and fire sprinkler installation.

architectural, structural, mechanical, electrical, and fire sprinkler installation.

architectural, structural, mechanical, plumbing, and electrical.

structural, mechanical, electrical, and landscaping.

A

architectural, structural, mechanical, plumbing, and electrical.

111
Q

Which type of drawing shows a top view of the inside of a building?

site/plot plan.

floor plan.

sectional drawing.

elevation drawing.

detail drawing.

A

floor plan.

112
Q

When essential information cannot be shown on another type of working drawing, a/an _____ drawing is used.

elevation.

floor plan.

detail.

site/plot plan.

A

detail.

113
Q

Define the term specification. (LT11, ST7)

A

A specification is a written description of work to be performed.

113
Q

The best place to find the address of the architect for a construction project is the:

index page.

specification.

schedules.

title block.

A

title block.

114
Q

The main purpose of a construction drawing is to:

convey information about how something is to be built or installed.

show the owner how the completed project will look.

provide a visual aid to architects and designers.

explain information provided in the specification.

all of the above are equally important.

A

convey information about how something is to be built or installed.

115
Q

Which option best describes the location marked “X” on the drawing in Figure 4?

ref. B.4-2.5
ref. A.4-2.5
ref. A.4-1.5
ref. A.4-0.5
ref. B.4-1.5

A

ref.A.4-1.5

116
Q

If there is any disagreement between the specification and a drawing, the information in the specification is usually taken to be correct. (LT11, ST7)

A

True

116
Q

Which type of drawing shows a front view of the north, south, east or west facing surface of a building?

site/plot plan.

floor plan.

sectional drawing.

elevation drawing.

detail drawing.

A

elevation drawing.

117
Q

Which type of drawing shows a top view of an entire property with the buildings drawn in their proper locations?

site/plot plan.

floor plan.

sectional drawing.

elevation drawing.

detail drawing

A

site/plot plan.

118
Q

The standard format for specifications is based on ____ major divisions, each of which relates to a specific trade or unit of work. (LT11, ST7)

A

50

118
Q

Taking measurements from a drawing and multiplying by the scale of the drawing to find the actual measurement is called:

high-balling.

transposing.

converting.

scaling.

A

scaling.

119
Q

Although orthographic projections may show many views, typically electrical diagrams show these views:

top, front, right side.

back, left side, top, front, bottom, right side.

top, right side, left side.

left side, top, front.

A

top, front, right side.

120
Q

An electrical room measures 3-1/8 inches by 2¼ inches on the plan. The scale is 1:40. What is actual size of the electrical room?

10’ 5” by 7’ 6”.

8’ 9” by 6’ 2”.

10’ 6” by 7’ 6”.

12’ 3” by 5’ 8”.

A

10’ 5” by 7’ 6”.

123
Q

In what order are the major divisions in a specification sequenced? (LT11, ST7)

A

in the same order the work would be performed

131
Q

What is the purpose of having a standard format for specifications and for always sequencing headings in the same order?
(LT11, ST7)

A

make it easier to find information

132
Q

Which type of drawing shows the detail beneath the surface of an object or structure?

site/plot plan.

floor plan.

sectional drawing.

elevation drawing.

detail drawing.

A

sectional drawing.

133
Q

Which of the following drawings would give the viewer a quick mental image of the project.

Isometric.

pictorial.

orthographic.

shop.

A

pictorial.

134
Q

When looking at an oblique pictorial drawing, details on the ____ view(s) are somewhat distorted.

front, side.

back.

front, side, top.

top, side.

A

top, side.

135
Q

Schedules are especially useful when they are:

keyed to a drawing with coded symbols.

printed in the specification instead of the drawing.

used in place of a note.

drawn to scale.

A

keyed to a drawing with coded symbols.

136
Q

Designers indicate which switch operates a particular wall receptacle by:

connecting them with a line.

using a letter code.

using a number code.

listing them in a legend.

power-riser diagram.

A

connecting them with a line.

137
Q

A piece of electrical equipment is located outside of a building, under a roofed open porch. This piece of equipment is, therefore, in a location that is considered to be:

dry.

wet.

hazardous.

damp.

A

damp.

138
Q

A wiring diagram shows:

The size of the circuit.

How the circuit works.

How and where the wires are connected.

The shape of the circuit.

A

How and where the wires are connected.

139
Q

The main purpose of a wiring diagram is to show:

how the circuit operates.

the distribution system for a power system.

the components that make up the circuit.

how the circuit should be wired.

A

how the circuit should be wired.

140
Q

The purpose of an as-built drawing is to:

correct errors made on the original plans.

provide details to fabricators.

keep a record of how a structure was actually built.

show how structures are normally built.

A

keep a record of how a structure was actually built.

141
Q

When doing critical measurements, dimensions and layout work, which drawing will an electrician use to double check information?

site drawings.

schematic drawing.

sectional drawings.

detailed drawings.

A

detailed drawings.

142
Q

In reference to construction prints, a schedule is a systematic method of:

outlining when certain work must be performed.

organizing appointments for architects and consulting engineers.

outlining the general instructions and legal requirements of a job.

presenting notes on a drawing in tabular form.

listing the dates that drawings were completed and revised.

A

presenting notes on a drawing in tabular form.

143
Q

Pictorial diagrams are:

two-dimensional.

actual photographs.

three-dimensional.

drawn with symbols.

A

three-dimensional.

144
Q

When looking at an oblique pictorial drawing, details on the ____ view(s) are somewhat distorted.

front, side.

back.

front, side, top.

top, side.

A

top, side.

145
Q

Which type of drawing often is drawn with a larger scale, this drawing shows a detailed view of a small part or component of the overall structure?

site/plot plan.

floor plan.

sectional drawing.

elevation drawing.

A

sectional drawing.

146
Q

The main reason for the “CEC” is to:

provide for the best possible installations.

help design difficult installations.

provide cheap methods for installations.

provide for a basically safe installation.

A

provide for a basically safe installation.

Electrical Foundations (Occupational Core) (4 decks)

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