HVAC Air Distribution System EXAM STUDY GUIDE 2026/2027 ACCURATE QUESTIONS WITH CORRECT DETAILED SOLUTIONS || 100% GUARANTEED PASS NEWEST VERSION

HVAC Air Distribution System EXAM STUDY GUIDE 2026/2027 ACCURATE QUESTIONS WITH CORRECT DETAILED SOLUTIONS || 100% GUARANTEED PASS NEWEST VERSION 1. The lowest pressure level withing an air distribution system is found at the? - ANSWER Input to the blower. 2. The velocity pressure in a air duct equals the? - ANSWER The total pressure minus the static pressure. 3. At sea level, every inch of Earth as an absolute pressure of? - ANSWER 14.7psi. 4. Air systems used only for heating usually require_______ systems used for both heating and cooling. - ANSWER Less airflow than. 5. Forced-air systems designed for cooling require about_______ of airflow per ton of cooling. - ANSWER 400 cfm +_50 6. Air distribution air systems considered to be high-pressure systems have pressure greater than? - ANSWER 3.5 in W.C. 7. When a change in the volume airflow in cfm is know, Fan law 1 can be used to calculate the? - ANSWER New value for rpm. 8. The total pressure loss in an air duct distribution system and its components (excuding the air handler) is called the? - ANSWER External static pressure loss. 9. Air systems with high sidewalls or cealling air outlets normally are designed to? - ANSWER Favor cooling over heating. 10. Fiberglass duct? - ANSWER Can be use instead metal duct in many applications. 11. All of the following are true with regard to fitting and transitions used in air duct ststem except? - ANSWER They have the same pressure loss per foot as the same straight duct. 12. A device use to control and balance airflow in forced air systens is a? - ANSWER Damper. 13. In order to minimize the spread of smoke within a building, select smoke damperwith a leakage? - ANSWER Class 1. 14. The lowest pressure level in an air distribution system is found at the? - ANSWER Blower inlet. 15. Heating, ventilation, and air conditioning (HVAC) is the technology used in buildings for ... - ANSWER thermal comfort and air quality. 16. HVAC - ANSWER 1. Air distribution system 2. Water distribution systems 3. Cooling source 4. Heating source 17. Air distribution system - ANSWER supply and exhaust fans, ductwork 18. Water distribution systems - ANSWER hydronic systems a. Chilled water (for cooling coils) b. Heating hot water (for heating coils) c. Cooling water (for cooling towers) 19. Cooling source - ANSWER chillers 20. Heating source - ANSWER boilers and water heaters 21. Building air distribution systems can take on many forms. The configuration of these systems is driven by ... - ANSWER indoor air quality, temperature and humidity control, energy conservation, and spatial constrains. 22. Some typical air distribution systems, which schematics can be found in the ASHRAE Handbook - HVAC Systems and Equipment, are: - ANSWER • Constant volume, variable temperature • Constant volume with reheat • Constant volume, multizone • Constant volume, dual duct • Variable air volume • Variable air volume with reheat • Fan coil units • Packaged terminal air conditioners 23. What are the factors affecting air supply? - ANSWER 1. Air to satisfy the internal sensible load 2. Requirement for make-up air (balance for positive pressure) 3. Meet the requirement for ventilation rates 24. Air distribution systems move the air from _______________ where cooling, heating, and ventilation are needed. - ANSWER equipment to spaces 25. Fans are used to ... - ANSWER move the air. 26. A fan increases the __________ and can be converted to static or dynamic pressure. These pressures are related as: - ANSWER total pressure � �