Rac 40 quiz 2 review - Study guides, Class notes & Summaries

RAC 40 Quiz 2 Review | Latest Version | 2024/2025 | Rated A+ What is specific gravity? Specific gravity is the ratio of the density of a substance to the density of a reference substance (usually water for liquids). What does Boyle's Law state about pressure and volume in a gas? Boyle's Law states that the pressure of a gas is inversely proportional to its volume when temperature is constant. What does Charles's Law state about temperature and volume in a gas? Charles's L...

RAC 40 Quiz 2 Review - Questions and Answers Boyle's law P1 x V1 = P2 x V2 Dalton's law Ptotal = Psubstance 1 + Psubstance 2 Charles' law V1 / T1 = V2 / T2 Specific Volume ft3/lb Hp 33000 ft-lb/min Specific Gravity no units Density lb/ft3 1kW 3413 Btu Work= Force x Distance One watt of electrical energy is equal to 3.413 Btu The volume of gas varies inversely with the absolute pressure, provided the temperature remains constant. This is called ______ ___. Boyle's Law A solid material exert...

RAC 40 QUIZ 5 Review | Latest Update | 2024/2025 | Rated A+ What is the main objective of a regulatory submission? To obtain approval for a product's marketing and use. What is the purpose of a clinical trial? To assess the safety and efficacy of a new treatment or device. Which document is essential for the approval of a new drug in the U.S.? New Drug Application (NDA). What does the term "orphan drug" refer to? A drug developed to treat a rare disease or condition. Wha...

RAC 40 Quiz 6 Review Questions and Answers Describe two types of staples and an example of their use. - Answer- U shape staple: used to secure low voltage wire Outward clinch tacker (bends staples outward): Used for securing installation around heating and cooling materials. What are two types of sheet metal screws? - Answer- self tapping, self drilling Name three types of fastening devices that can be used to mount an object to a hollow wall - Answer- 1. toggle bolt 2. wall anchor ...

RAC 40 Quiz 7 Review Questions and Answers All Correct When When making a swage joint, what should the depth of the enlarged portion of the tube be? - Answer- Depth depends on the diameter of the tubing and should have the same measurements as the diameter of the tubing The type of steel pipe thread used primarily in this industry is the "tapered" thread. Why? - Answer- tapered has a better fit When soldering, what is the flow of molten filler material between the two base metals ca...

RAC 40 Quiz 8 Review Questions with 100% Correct Answers What are some ways they can increase the productivity of the dehydration and evacuation process? list all you can think of - Answer- -purge system with nitrogen before pulling vacuum -heat up and kick compressors to get out all the moisture and oil from underneath -use copper tubing instead of vacuum hoses -make sure vacuum pump oil is new and vacuum pump When non condensables and moisture are left in a system hydrochloric and hy...

RAC 40 Quiz 7 Review | Latest Update | 2024/2025 | 100% Verified What is the key difference between soldering and brazing? Soldering occurs below 840°F, while brazing takes place at temperatures above 840°F. Why is flux used in both soldering and brazing? Flux removes oxides from the metal surface and prevents further oxidation during the heating process. What is the purpose of capillary action in brazing? Capillary action draws the molten filler material into the joint betw...

RAC 40 Quiz 2 Final Review Test 2024. Boyle's law - CORRECT ANSWER P1 x V1 = P2 x V2 Dalton's law - CORRECT ANSWER Ptotal = Psubstance 1 + Psubstance 2 Charles' law - CORRECT ANSWER V1 / T1 = V2 / T2 Specific Volume - CORRECT ANSWER ft3/lb Hp - CORRECT ANSWER 33000 ft-lb/min Specific Gravity - CORRECT ANSWER no units Density - CORRECT ANSWER lb/ft3 1kW - CORRECT ANSWER 3413 Btu Work= - CORRECT ANSWER Force x Distance One watt of electrical energy is equal to - ...