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

Question 1

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

Answer 1

Bigger.

Question 2

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

Answer 2

Smaller.

Question 3

Do hardwoods have leaves or needles?

Answer 3

Leaves.

Question 4

Do softwoods have leaves or needles?

Answer 4

Needles.

Question 5

What is hardness?

Answer 5

The ability to resist scratching or denting.

Question 6

What is rigidity?

Answer 6

The ability to resist deforming when a force is applied.

Question 7

What is resilience?

Answer 7

The ability to resist impact.

Question 8

What is malleability?

Answer 8

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

Question 9

What is brittleness?

Answer 9

Will shatter apon impact.

Question 10

What is elasticity?

Answer 10

Ability to deform and return to the origional shape.

Question 11

What is ductility?

Answer 11

Ability to be shaped into a wire.

Question 12

What is electrical conductivity?

Answer 12

Ability to allow electrons to flow through.

Question 13

What is thermal conductivity?

Answer 13

Ability to allow heat to flow through.

Question 14

What is corrosion resistance?

Answer 14

Ability to resist rusting.

Question 15

What makes a metal an alloy?

Answer 15

Adding iron.

Question 16

What makes a metal/alloy ferrous?

Answer 16

Adding iron or steel.

Question 17

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

Answer 17

30 degrees.

Question 18

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

Answer 18

45 degrees.

Question 19

An object line shows…..

Answer 19

… The visible details in an object.

Question 20

A hidden line shows…..

Answer 20

….. The hidden details of an object.

Question 21

The dimension line……

Answer 21

…. indicates a dimension

Question 22

The extention line shows…..

Answer 22

Where a measurment begins and ends.

Question 23

The diameter symbol…..

Answer 23

…. Indicates a diameter measurement.

Question 24

The center and symmetry lines show….

Answer 24

….. The center of a circle or a hole.

Question 25

How do you draw an object line?

Answer 25

It’s just a straight line. ex. _____

Question 26

How do you draw a hidden line?

Answer 26

It’s a broken up line (dashes). ex. - - - -

Question 27

How do you draw a dimension line?

Answer 27

Using arrows ← → (skinnier)

Question 28

What 2 lines always appear together?

Answer 28

Dimension and extention lines.

Question 29

How do you draw an extension line?

Answer 29

Two little parallel lines. ex. l l

Question 30

How do you draw a diameter symbol?

Answer 30

Draw an ‘o’ with a diagonal line through it. ex. Ø

Question 31

What is tension?

Answer 31

A pulling force. ex. tug of war, swing

Question 32

What is compression?

Answer 32

A squeezing force.

Question 33

What is tortion?

Answer 33

A twisting force. ex. wringing out a towel.

Question 34

What is deflection?

Answer 34

A bending force. ex. a balance beam.

Question 35

What is shearing?

Answer 35

A cutting force. ex. ripping a piece of paper.

Question 36

What are the symbols for tension?

Answer 36

← →

Question 37

What are the symbols for compression?

Answer 37

→ ←

Question 38

What are the symbols for deflection?

Answer 38

↓
———
↑ ↑

Question 39

What are the symbols for tortion?

Answer 39

🔁 (kinda)

Question 40

What are the symbols for shearing?

Answer 40

→

← (except they’ll closer and are full arrows. you should know this.)

Question 41

Are the arrows big or skinny when being drawn to show force?

Answer 41

Big.

Question 42

What are examples of hardwood?

Answer 42

Alder, balsa, beech, hickory, mahogany, maple, oak, teak, and walnut.

Question 43

What are examples of softwood?

Answer 43

Cedar, douglas fir, juniper, pine, redwood, spruce, and yew

Question 44

What are examples of ferrous alloys?

Answer 44

Steel, stainless steel, Cast iron.

Question 45

What are the main propterties of metals?

Answer 45

Electrical and thermal conductivity, Rigidity, rescilience, Ductility and malleability.

Question 46

Pure metals are found where?

Answer 46

The earth’s crust.