Exercise 1 Flashcards
A
Why do we need to make drawings to certain scales?
to give an image proportion to the actual component or structure.
what does a scale of 1:2 mean?
the drawing is half the size of the real thing.
Complete the following statement.
In the isometric drawing, the width, length, and depth are laid off on inclined lines usually ____________ to the horizontal.
30 degrees
What are the two general classes into which picture drawings are divided?
Perspective and Isometric
How many principal views are there in orthographic drawings?
a. 5
b. 3
c. 4
d. 6
e. 7
d. 6
Auxilliary
Why are section views used?
To clarify the features of a part
Explain the meaning of the following designations.
a. L150 x 100 x10
b. C200 x 17
c. w410 x 60
a. steel angle with leg lengths of 150 mm and 100 mm, thickness of 10 mm
b. steel channel 200 mm deep and a mass of 17 kg per meter
c. wide flange shape 410 mm deep and a mass of 60 kg per meter
What is a datum?
A datum is a geometrical reference to which toleranced features are related.
what are the five basic joints
- Butt joint
- corner joint
- tee joint
- lap joint
- edge joint
What are the five basic welds?
- Groove
- fillet
- plug and slot
- surfacing
- edge
A weld deposit resulting from a pass is known as a:
a. root face
b. spacer strip
c. spot weld
d. weld bead
d. weld bead
