Tech drawings, properties, woods, metals, forces, etc. Flashcards

1
Q

If the ratio is 1:3 is the drawing bigger or smaller than the actual object?

A

Bigger.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

If the ratio is 2:1 is the drawing bigger or smaller than the actual object?

A

Smaller.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Do hardwoods have leaves or needles?

A

Leaves.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Do softwoods have leaves or needles?

A

Needles.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is hardness?

A

The ability to resist scratching or denting.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is rigidity?

A

The ability to resist deforming when a force is applied.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is resilience?

A

The ability to resist impact.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is malleability?

A

The ability to be shaped or flattened into a thin sheet.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is brittleness?

A

Will shatter apon impact.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is elasticity?

A

Ability to deform and return to the origional shape.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is ductility?

A

Ability to be shaped into a wire.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is electrical conductivity?

A

Ability to allow electrons to flow through.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is thermal conductivity?

A

Ability to allow heat to flow through.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is corrosion resistance?

A

Ability to resist rusting.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What makes a metal an alloy?

A

Adding iron.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What makes a metal/alloy ferrous?

A

Adding iron or steel.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the degree of the angle in an isometric projection?

A

30 degrees.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the degree of the angle in an oblique projection?

A

45 degrees.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

An object line shows…..

A

… The visible details in an object.

20
Q

A hidden line shows…..

A

….. The hidden details of an object.

21
Q

The dimension line……

A

…. indicates a dimension

22
Q

The extention line shows…..

A

Where a measurment begins and ends.

23
Q

The diameter symbol…..

A

…. Indicates a diameter measurement.

24
Q

The center and symmetry lines show….

A

….. The center of a circle or a hole.

25
How do you draw an object line?
It's just a straight line. ex. _____
26
How do you draw a hidden line?
It's a broken up line (dashes). ex. - - - -
27
How do you draw a dimension line?
Using arrows ← → (skinnier)
28
What 2 lines always appear together?
Dimension and extention lines.
29
How do you draw an extension line?
Two little parallel lines. ex. l l
30
How do you draw a diameter symbol?
Draw an 'o' with a diagonal line through it. ex. Ø
31
What is tension?
A pulling force. ex. tug of war, swing
32
What is compression?
A squeezing force.
33
What is tortion?
A twisting force. ex. wringing out a towel.
34
What is deflection?
A bending force. ex. a balance beam.
35
What is shearing?
A cutting force. ex. ripping a piece of paper.
36
What are the symbols for tension?
← →
37
What are the symbols for compression?
→ ←
38
What are the symbols for deflection?
↓ --------- ↑ ↑
39
What are the symbols for tortion?
🔁 (kinda)
40
What are the symbols for shearing?
→ | ← (except they'll closer and are full arrows. you should know this.)
41
Are the arrows big or skinny when being drawn to show force?
Big.
42
What are examples of hardwood?
Alder, balsa, beech, hickory, mahogany, maple, oak, teak, and walnut.
43
What are examples of softwood?
Cedar, douglas fir, juniper, pine, redwood, spruce, and yew
44
What are examples of ferrous alloys?
Steel, stainless steel, Cast iron.
45
What are the main propterties of metals?
Electrical and thermal conductivity, Rigidity, rescilience, Ductility and malleability.
46
Pure metals are found where?
The earth's crust.