UCLA MAE 183 HW#1 Solutions – Fall 2010
Review Q 1.2:
What is a capital good? Provide an example.
. Capital goods are those purchased by other companies to produce goods or supply
services. Examples of capital goods are aircraft and construction equipment.
Review Q 1.5:
Name the three basic categories of materials.
. (1) Metals, (2) ceramics, and (3) polymers. A fourth category, composites, is a non-
homogeneous mixture of the other types and therefore is not a basic category.
Review Q 1.7:
What are two subclasses of assembly processes? Provide an example process for each
. Permanent joining and mechanical fastening. Examples of permanent joining include
welding or adhesive bonding. Examples of mechanical fastening include threaded fasteners, such
as nuts and bolts, and rivets.
Review Q 1.Extra1 (not in the textbook):
What is the main advantage of having “slip” for
What is the main disadvantage?
. Advantage: Slip causes materials to be more ductile and therefore easier to shape.
Disadvantage: Slip also correlates to a decrease in strength.
Multiple Choice Q 1.3:
Inventions of the Industrial Revolution include which one of the following: (a)
automobile, (b) cannon, (c) printing press, (d) steam engine, or (e) sword?
Multiple Choice Q 1.5:
Which one of the following engineering materials is defined as a compound
containing metallic and nonmetallic elements: (a) ceramic, (b) composite, (c) metal, or (d) polymer?
Multiple Choice Q 1.6:
Which of the following processes start with a material that is in a fluid or
semi-fluid state and solidifies the material in a cavity (two best answers): (a) casting, (b) forging, (c)
machining, (d) molding, (e) pressing, and (f) turning?
. (a) and (d).
Multiple Choice Q 1.9:
Which one of the following is a machine used to perform extrusion: (a) forge
hammer, (b) milling machine, (c) rolling mill, (d) press, or (e) torch?
Review Q 2.2:
Which elements are the noble metals?
. Copper, silver, and gold.
Review Q 2.4:
Describe how ionic bonding works.