Classify the trusses in Figure P4.2 as stable or unstable. If stable, indicate if determinate or indeterminate. If indeterminate, indicate the degree.
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The many items used in ____ for testing, research, and developing new products may be preassembled by a manufacturer or designed for assembly on-site.
A. laboratories B. fluid waste treatment centers C. offices D. residences
?Which of the following would not be a NDT type test of a weld.
A. ?tensile B. ?visual C. ?leak D. ?penetrant
Answer the following statement(s) true (T) or false (F)
1. Dimension is a physical quantity, such as length, time, mass, or temperature, that makes it possible for us to communicate. 2. We need not only physical dimensions to describe our surroundings but also some way to scale or divide these physical dimensions. 3. A one degree temperature difference in Fahrenheit is equal to one degree temperature difference in Celsius. 4. A one degree temperature difference in Fahrenheit is equal to one degree temperature difference in Rankine. 5. A one degree temperature difference in Celsius is equal to one degree temperature difference in Kelvin.
Under what conditions would a package air-conditioning system need to be charged?
A. during initial installation B. during compressor replacement C. after the suction line cracked D. both b and c