Architecture Chapter 20 Homework Prepare well-balanced, easy-to-read drawings

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settings, go to the Student Companion Website, select

Student Downloads, Drafting Templates, and then the

appropriate template file. Use the templates to create new

designs, as a resource for drawing and model content, or

for inspiration when developing your own templates. Use

the ASME-Inch and ASME-Metric drafting templates that

follow ASME, ISO, and related mechanical drafting

standards for electronic drawing problems, unless

otherwise specified by your instructor. Use architectural-

style templates for electrical problems, unless otherwise

specified by your instructor. Drawing templates include

standard sheet sizes and formats, and a variety of

appropriate drawing settings and content. You can also use

a utility such as the AutoCAD DesignCenter to add content

from the drawing templates to your own drawings and

templates. Consult with your instructor to determine which

template drawing and drawing content to use.

DRAFTING TEMPLATES

CHAPTER 20 ELECTRICAL AND

ELECTRONIC DRAFTING PROBLEMS

INSTRUCTIONS

1. Read all instructions before you begin working, unless oth-

erwise specified by your instructor.

2. Use the attached engineering layouts to prepare each draw-

ing. Refer to chapter coverage for symbol and component

dimensions and refer to previous drawings for information

as you progress to each drawing.

3. Use an ASME Y14.1 or ASME Y14.1M standard border and

title block unless otherwise specified in the problem in-

structions or by your instructor.

4. Prepare well-balanced, easy-to-read drawings. Most draw-

ings have no scale.

5. Many of the following problems contain symbols that are

duplicated multiple times. These electrical problems dem-

onstrate the power of CADD when you create one symbol

and have the ability to use it several times on one or more

drawings.

6. Additional information is provided for some problems.

7. Estimate unknown dimensions based proportionally on

given features and dimensions.

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BASIC DIAGRAMS

Part 1 : Problems 20.1 Through 20.10

PROBLEM 20.1 Switch panel

PROBLEM 20.2 Schematic

PROBLEM 20.3 Schematic

PROBLEM 20.4 Schematic

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PROBLEM 20.5 Schematic

PROBLEM 20.6 Schematic

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PROBLEM 20.7 Block diagram

Given the following engineering layout of the Potlatch-Pearl Sub-

station, draw the block diagram on an 11 3 17 sheet with an

architectural-style border and title block unless otherwise speci-

fied by your instructor. Sheets with borders and title blocks are

found as templates on the CD provided with this textbook. There

is no scale. The layout should neatly fill the sheet without crowd-

ing symbols or notes. Make all connection points Ø3/32 in. Pro-

vide the general note INTERPRET PER ANSI Y32.2.

Courtesy Bonneville Power Administration.

PROBLEM 20.8 Elementary diagram

Metering System.

Courtesy Bonneville Power Administration.

PROBLEM 20.9 Highway diagram

Draw all component outlines and feeder lines .020 in. (0.5mm)

wide and trunk lines .039 in. (1.00 mm) wide.

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PROBLEM 20.10 Wireless diagram

ELECTRICAL DIAGRAMS

Part 2: Problems 20.11 Through 20.15

PROBLEM 20.11 Cable diagram

Display Panel-CVS-3 COND. Make all panel outlines and feeder

lines .020 in. (0.5 mm) wide and all trunk lines 0.39 in. (1.00 mm)

wide. Do all lettering .125 in. (3 mm) high, with component labels

.188 in. (5 mm) high and titles .25 (6 mm) high.

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PROBLEM 20.12 Wiring diagram

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PROBLEM 20.13 Wireless diagram

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PROBLEM 20.14 Block diagram

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PROBLEM 20.15 Block diagram

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ELECTRICAL DRAWINGS

Part 3: Problems 20.16 Through 20.34

PROBLEM 20.16 Wiring harness

Courtesy Flir Systems, Inc.

PROBLEM 20.17 Wiring harness

Courtesy Flir Systems, Inc.

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PROBLEM 20.18 Photocell wiring diagram

PHOTOCELL WIRING DIAGRAM

NO SCALE

PROBLEM 20.19 Block diagram

PROBLEM 20.20 Cable assembly

Given the cable assembly engineering layout in Figure 20.12,

page 674, do the following:

1. Draw the cable assembly, wiring diagram, and bill of

materials.

2. Approximate dimensions that are not given.

3. Use an appropriate sheet size of your choice and an ASME

style border and title block. Sheets with borders and title

blocks are found as templates on the CD provided with this

textbook.

4. Use ASME standard line widths for cable assembly and 0.5

mm lines for wiring diagram.

5. Use .12 in. (3 mm) lettering with .24 in. (6 mm) high letters in

balloons and titles.

6. Make balloons Ø 1/2 in. (25 mm).

7. Letter the following general notes:

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1. DIMENSIONS AND TOLERANCES PER ASME Y14.5-2009.

2. INTERPRET DRAWING PER IEEE 315A.

3. DIMENSIONS ARE IN INCHES WITH TOLERANCES: FRAC-

TIONS 5 61/64, 5 6.XX .010, .XXX 5 6.005.

4. 32 MICRO IN FINISH ON METAL PARTS.

5. MATERIAL BRONZE.

6. USE SPEC 6712 FOR WIRE END PREPARATION.

PROBLEM 20.21 Bus layout plan view

Given the engineering layout shown in Figure 20.16, page 679, for

the Narrows substation, draw the bus layout using a 3/160 5 19-00

(1:50 metric) scale. Use an architectural-style border and title

block. The following line widths are recommended:

.014 in. (0.35 mm) Extension, dimension, balloon lines,

all connections

.020 in. (0.50 mm) Component and bus lines and

lettering

.024 in. (0.60 mm) Titles

Draw balloons Ø 9/32 in. (7–8 mm). Draw north arrow S458 W.

Draw bus lines from given dimensions and fill in solid except for

connections. Estimate dimensions not given.

PROBLEM 20.22 Bus elevations

Given the partial engineering layout shown in Figure 20.17,

page 679, for the Narrows substation, draw the bus elevation.

Follow all other instructions given in Problem 20.21.

PROBLEM 20.23 Grounding layout

Given the partial engineering layout shown in Figure 20.19,

page 680, of the Narrows substation, draw the grounding layout

at a scale of 10 = 109-00 (1:100 metric). Include notes and ground-

ing table. Follow all other instructions given in Problem 20.21.

PROBLEM 20.24 Grounding details

Given the partial engineering layout shown in Figure 20.20,

page 681, of the Narrows substation, draw the grounding detail.

Follow all other instructions given in Problem 20.21.

PROBLEM 20.25 Conduit installation layout

Given the partial engineering layout shown in Figure20.21,

page 682, of the Narrows substation, draw the conduit instal-

lation layout. A magnifying glass may be needed to read the

engineering layout. Follow all other instructions given in

Problem 20.21.

PROBLEM 20.26 Conduit installation details

Given the partial engineering layout of the conduit installation

detail shown in Figure 20.22, page 683, for the Narrows substa-

tion, draw the given views. Follow all other instructions given in

Problem 20.21.

PROBLEM 20.27 Residential electrical

Given the typical electrical layouts shown in Figures 20.29,

page 685 and 20.30, page 686, draw each one at a scale of 1/40 5

19-00 (1:50 metric). Place one next to the other. Estimate dimen-

sions making your drawing about twice the size of the given

drawing. Use an architectural-style border and title block.

PROBLEM 20.28 Power panel detail

Narrows substation.

Courtesy Bonneville Power Administration

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PROBLEM 20.29 Electrical floor plan

Given the partial engineering upper-floor power layout shown in

Figure 20.34, page 686, draw the plan using a 1/40 5 19-00 (1:50

metric) scale. Estimate dimensions, making your drawing about

three times the size of the given drawing. Use an architectural-

style border and title block.

PROBLEM 20.30 Reflected ceiling plan

Given the engineering layout shown in Figure 20.35, page 686,

draw the reflected ceiling plan at a 1/40 5 19-00 (1:50 metric)

scale. Estimate unknown dimensions. Use an architectural-style

border and title block.

PROBLEM 20.31 Roof plan—electrical

Given the partial engineering layout shown in Figure 20.36,

page 687, draw the roof plan—electrical at a 1/40 5 19-00

(1:50 metric) scale. Estimate unknown dimensions. Use an archi-

tectural-style border and title block.

PROBLEM 20.32 Commercial schematic wiring diagram

Given the engineering layout shown in Figure 20.37, page 687,

draw the beverage cooler condenser unit wiring diagram.

PROBLEM 20.33 First-floor lighting plan

Use the problem layout on the following page to create the

partial lighting plan shown. Use a 1/40 5 19-00 (1:50 metric)

scale to draw the floor plan. Make the dimensions to your own

specifications but proportional to the given engineering

drawing. Use appropriate CADD layers. Use an architectural-

style border and title block.

Courtesy Interface Engineering

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PROBLEM 20.34 First-floor power plan

Use the partial floor plan that you drew in Problem 20.33 as a

guide to create the partial power plan shown in the following

engineering drawing. Use appropriate CADD layers. Use an

architectural-style border and title block.

Courtesy Interface Engineering

BLOCK AND SCHEMATIC DIAGRAMS

Part 4: Problems 20.35 Through 20.45

1. Follow previous instructions unless otherwise specified.

2. Use an appropriate sheet size of your choice and an

ASME-style border and title block.

3. Use the selected engineering layouts and sketches to pre-

pare each drawing. Keep in mind that engineering

sketches can contain slight errors in format and symbol

accuracy. Verify proper representation before drawing

each symbol.

PROBLEM 20.35 Block diagram

Given the schematic diagram sketch that has been divided

into stages, prepare a block diagram using 11 3 17 (A3metric)

size, unless otherwise specified by your instructor. Make

all lines .020 in. (0.5 mm) wide. Complete all lettering .12 in.

(3 mm) high with titles .24 in. (6 mm) high. The sketch does not

show connection dots.

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PROBLEM 20.36 Television receiver block diagram

Given the block diagram engineering layout, draw the block dia-

gram using 11 3 17 (A3 metric) size unless otherwise specified

by your instructor. Do all lettering .12in. (3 mm) high with titles

.24 in. (6 mm) high. Use .020 in. (0.5 mm) thick lines unless oth-

erwise specified on the engineering sketch.

Courtesy RCA Consumer Electronics

PROBLEM 20.37 Cylinder speed block diagram

Given the block diagram engineering layout, draw the block dia-

gram using 17 3 22 (A2 metric) size, unless otherwise specified

by your instructor. Do all lettering .12in. (3 mm) high with titles

.24 in. (6 mm) high. Use .020 in. (0.5 mm) thick lines unless oth-

erwise specified on the engineering sketch.

Courtesy RCA Consumer Electronics

PROBLEM 20.38 Schematic diagram

Given the schematic engineering sketch, make a schematic dia-

gram using 11 3 17 (A3 metric) size. There is no scale, and the

drawing must be balanced, uncluttered, and easy to read. Use the

following instructions unless otherwise specified by your

instructor:

1. Draw the entire schematic with .020 in. (0.5 mm) wide lines.

2. Do all lettering .12 in. (3 mm) high with titles .24 in. (6mm)

high.

3. Follow the left-to-right and top-to-bottom labeling system

using coding as described in this chapter: R1, R2, R3 . . . , C1,

C2. . . .

4. Label horizontal components above and vertical compo-

nents to the right.

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PROBLEM 20.39 Tuner schematic diagram

Given the schematic engineering layout, make a schematic dia-

gram using 11 3 17 (A3 metric) size. There is no scale, and the

drawing must be balanced, uncluttered, and easy to read. Use the

following instructions unless otherwise specified by your

instructor:

1. Draw the entire schematic with .020 in. (0.5 mm) wide lines

and dashed stage lines .028 in. (0.7 mm) wide.

2. Do all lettering .12 in. (3 mm) high with titles .24 in. (6mm) high.

3. Reference designators are not shown. Use the left-to-right and

top-to-bottom labeling system, using coding as described in

this chapter: R1, R2, R3 . . . , C1, C2. . . .

4. Label horizontal components above and vertical compo-

nents to the right.

5. Place connection dots as necessary.

Courtesy RCA Consumer Electronics

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PROBLEM 20.40 Television receiver tuner schematic diagram

Given the schematic engineering sketch, make a schematic dia-

gram using 17 3 22 (A2 metric) size. There is no scale, and the

drawing must be balanced, uncluttered, and easy to read. Use the

following instructions unless otherwise specified by your

instructor:

1. Draw the entire schematic with .020 in. (0.5 mm) wide lines

and dashed stage lines .028 in. (0.7 mm) wide.

2. Do all lettering .12 in. (3 mm) high with titles .24 in. (6mm)

high.

3. Reference designators are not shown; use the left-to-right

and top-to-bottom labeling system, using coding as de-

scribed in this chapter: R1, R2, R3 . . . , C1, C2. . . .

4. Label horizontal components above and vertical compo-

nents to the right.

5. Place connection dots as necessary.

PROBLEM 20.41 Electronics schematic

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PROBLEM 20.42 FM tuner schematic

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PROBLEM 20.43 Logic diagram

Given the IC schematic engineering layout for the logic dia-

gram, make a schematic drawing using 17 3 22 (A2metric)

size. Use the following instructions unless otherwise specified

by your instructor:

1. Do all line work and lettering using .020 in. (0.5 mm) width.

2. Do all lettering .12 in. (3 mm) high with titles .24 in. (6mm) high.

3. All connection points are Ø3/320 filled in.

4. Provide the general note INTERPRET PER IEEE 315A.

PROBLEM 20.44 Logic diagram

Given the schematic engineering sketch, make a schematic dia-

gram using 17 3 22 (A2 metric) size. There is no scale, and the

1. REFERENCE DESIGNATORS ARE

FOR REFERENCE ONLY AND MAY

NOT APPEAR ON PART.

2. RESISTOR VALUES ARE IN DHMS.

3. FOR PWB/COMPONENT ASSEMBLY,

SEE DWG. 100/01.

4. FOR PARTS, SEE SPL 100/02.

5. FOR PRINTED WIRING BOARD, SEE

DWG. 100/03.

NOTES:

drawing must be balanced, uncluttered, and easy to read. Use the

following instructions unless otherwise specified by your

instructor:

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