Pattern Development 120203a

Question 1

1. Determine the length of line on the drawing for the following plate lengths. Use a
   scale of 3” = 1’ 0”.
   a） 5’0”
   b) 6’ 9”

Answer 1

a) 1’3”
b) 1’8 1/4”

Question 2

2. Determine the length on the material when the dimension on the drawing is the
   following.
   Use a scale of 3” = 1’ 0”.
   a) 1 1/2”
   b) 9”

Answer 2

a) 0’ 6”
b) 3’ 0”

Question 3

3. Determine the length of line on the drawing for the following plate lengths. Use a
   scale of 1:5.
   a) 150 mm
   b) 1200 mm

Answer 3

a) 30mm
b) 240mm

Question 4

4. Determine the length on the material when the dimension on the drawing is the following. Use a scale of 1:5.
   a) 25 mm
   b) 92 mm

Answer 4

a) 125mm
b) 460mm

Question 5

5. What type of pictorial drawing shows objects as they appear to the eye? a)
   isometric
   b) oblique c)
   orthographic
   d) perspective

Answer 5

d) perspective

Question 6

6. Which type of drawing uses one orthographic view with parallel lines receding off that view?
   a) pictorial
   b) oblique
   c) isometric
   d) perspective

Answer 6

b) oblique

Question 7

7. Oblique drawings are generally used for objects that:
   a) are large and complicated.
   b) require a great deal of accuracy.
   c) are small and simple.
   d) have many angled surfaces to show.

Answer 7

c) are small and simple.

Question 8

8. Isometric drawings show horizontal lines receding at:
   a) 15°
   b) 30°
   c) 45°
   d) any convenient angle

Answer 8

b) 30°

Question 9

9. Drawings using oblique projection are foreshortened to:
   a) make the drawing look more realistic.
   b) reduce the drawing to scale.
   c) avoid the use of break lines.
   d) allow more room for details.

Answer 9

a) make the drawing look more realistic.

Question 10

10. One disadvantage of isometric drawings is that:
    a) the top and side faces are distorted.
    b) the top and front faces are distorted.
    c) the side and front faces are distorted.
    d) all of the faces are distorted.

Answer 10

d) all of the faces are distorted.

Question 11

11. One disadvantage of perspective drawings is that:
    a) too much detail makes the drawing hard to read
    b) the scale varies from one view to another
    c) these drawings cannot be drawn to scale
    d) there is no provision for auxiliary views

Answer 11

c) these drawings cannot be drawn to scale

Question 12

12. From the following list, find two (2) true statements regarding orthographic drawings.
    a) The views are always two-dimensional.
    b) The dimensions are sometimes distorted.
    c) They are difficult to dimension.
    d) Circular objects are difficult to draw.
    e) The reader has to visualize the complete assembly.
    f) Slanted faces cannot be shown true to size.
    g) Circular objects are not shown square to the reader.
    h) The use of too many views confuses the reader.

Answer 12

a) The views are always two-dimensional.
e) The reader has to visualize the complete assembly.

Question 13

13. In order to have oblique drawings appear true to form, the receding lines are drawn:
    a) shorter than the actual length of the part.
    b) the same as the original length of the part.
    c) longer than the actual length of the part.
    d) to converge, making the drawing look in proportion.

Answer 13

a) shorter than the actual length of the part.

Question 14

14. When dimensioning differs from the conventional type, it is called:
    a) multiple line dimensioning.
    b)precision line dimensioning.
    c )baseline dimensioning.
    d) horizontal and vertical line dimensioning.

Answer 14

c )baseline dimensioning.

Question 15

15. The purpose of dimensions are to:
    a) show hidden features.
    b) give angular details.
    c) improve accuracy of fabrication.
    d) indicate sizes and locations.

Answer 15

d) indicate sizes and locations.

Question 16

Objective One Exercise
1. The scale of a drawing is 3” = 1’ 0”. Determine the length of a line on a drawing for
the following plate lengths.
a) 5’0”
b) 6’9”

Answer 16

a) 15”
b) 20.25”

Question 17

Objective One Exercise
2. The scale of a drawing is 1” = 1’ 0”. Given the following drawing line lengths,
determine how long the actual material should be cut.
a) 3 1/2”
b) 15 1/4”

Answer 17

a) 3’6”
b) 15’ 3”

Question 18

Objective One Exercise
3. A drawing is drawn to a scale of 1:5. Determine the length of a line on a drawing for the following pipe lengths.
a) 120mm
b) 820mm

Answer 18

a) 24mm
b) 164 mm

Question 19

4. Objective One Exercise
5. A scale of 1:20 is on a drawing. Given the following drawing line lengths, determine how long the S shape lengths should be cut.
   a) 45mm
   b) 122mm

Answer 19

a) 900mm
b) 2440mm

Question 20

Objective 2.
What are the 3 types of pictorial drawings

Answer 20

perspective
oblique
isometric

Question 21

Page 12.
Figure 14 has pictures of twelve objects. The right side view of each object is given and numbered in the section at the right. Select the correct right side view for each object and place its number in the small square given with each picture. Two views have already been identified for you; the answer for A is 4 and the answer for B is 11.

Answer 21

a) 4
b) 11
c) 6
d) 9
e) 13
f) 3
g) 3
h) 1
i) 5
j) 7
k) 13
l) 4

Question 22

Page 13
Figure 15 has pictures of twelve objects. The orthographic view of each object is given and numbered in the section at the right. View from the direction indicated by the arrow, then select the correct hidden view for each object and place its number in the small square given with each picture. Two views have already been identified for you; the answer for A is 4 and the answer for B is also 14.

Answer 22

a) 4
b) 14
c) 12
d) 8
e) 14
f) 3
g) 7
h) 1
i) 5
j) 5
k) 10
l) 10

Question 23

Page 14
Figure 16 has pictures of twelve objects. The right side view of each object is given and numbered in the section at the right. Select the correct right side view for each object and place its number in the small square given with each picture. Two views have already been identified for you; the answer for A is 5 and the answer for B is 14.

Answer 23

a) 5
b) 14
c) 13
d) 5
e) 3
f) 12
g) 10
h) 14
i) 9
j) 2
k) 7
l) 6

Question 24

Figure 17 has pictures of twelve objects. The orthographic view of each object is given and numbered in the section at the right. View from the direction indicated by the arrow, then select the correct hidden view for each object and place its number in the small square given with each picture. Two views have already been identified for you; the answer for A is 7 and the answer for B is also 7.

Answer 24

a) 7
b) 7
c) 10
d) 14
e) 11
f) 5
g) 10
h) 10
i) 2
j) 9
k) 4
l) 3

Question 25

On graph paper- For the following two orthographic exercises, draw the top, front and right side views in orthographic projection from the isometric drawing shown in the top right corner of the work sheet. Follow these guidelines. * Let each square on the worksheet equal ten units of length. * Place and align the views correctly. Leave sufficient space between the views to dimension the object. Use only those dimensions that are required. : Use proper line conventions and show all necessary lines

Answer 25

Question 26

On graph paper- For the following two orthographic exercises, draw the top, front and right side views in orthographic projection from the isometric drawing shown in the top right corner of the work sheet. Follow these guidelines. * Let each square on the worksheet equal ten units of length. * Place and align the views correctly. Leave sufficient space between the views to dimension the object. Use only those dimensions that are required. : Use proper line conventions and show all necessary lines

Answer 26

Question 27

Objective 5 Exercise. Construct the top, front and right side views of the machine block in figure 36. Include all of the necessary dimensions. Ensure your drawing is made in the landscape position so that it fits onto the page in a metric scale of 1:5

Answer 27

Question 28

Objective 8 exercise 1. Lay out the pattern for a 150lb blind flange for 2" standard pipe using the following data: - 4 holes - 6" flange OD - 4 3/4 bolt circle diameter 7/8" bolt hole diameter

Answer 28

Question 29

Objective 8 exercise 2. Lay out the pattern for a flange using the following data: - 8 holes - 150mm flange OD - 50mm flange ID - 100mm bolt circle diameter - 20 mm bolt hole diameter Note: the layout includes a hole in the centre (ID of the flange) making it a flange rather than a blind flange.

Answer 29