What materials can be used to dampen sound from mechanical equipment?
What will be an ideal response?
Much of the sound can be dampened by mounting the mechanical equipment on various types of isolator pads. Rubber, neoprene, cork, and fiberglass pads are used for small pieces of equipment or larger pieces located in basement areas. For heavier-duty units mounted within a building or on its roof, a steel spring mounting is used.
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Soil groups within the subclasses are called ____________________ units
Fill in the blank(s) with the appropriate word(s).____________________ surface modeling is a technique that allows the designer to create a "skin" over a component, creating curves in almost any shape desired.
Fill in the blank(s) with the appropriate word(s).
A gasoline with a high drivability index is ________
A) DI does not describe volatility B) More volatile than gasoline with a lower DI C) Less volatile than gasoline with a lower DI D) None of these
The term __________ refers to the property of a material that absorbs or loses water.
A. mass density B. airatrons C. hygroscopic