A heat exchanger is - Study guides, Revision notes & Summaries

When inspecting the heating equipment, the inspector is not required to _________. A. operate the system using normal operating controls B. open readily openable access panels provided by the manufacturer C. observe automatic safety controls D. operate heating systems when conditions may cause equipment damage - Ans: D. operate heating systems when conditions may cause equipment damage What should an inspector do if they find a cracked heat exchanger? A. turn off the furnace immediately ...

HVAC Gas Heat Certification Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: What is the volume of flue gas produced from a 60,000 BTU/h Category I fan assisted Natural Gas furnace operating with 50% excess air? Answer: 600 cu ft. Q: The purpose of a flue baffle is to Answer: Increase heat exchange Q: The LP gas pressure supplied to the appliance gas valve should be Answer: 11 - 13 in. W.C. Q: An installed gas furna...

Home Inspector National Exam Prep Questions and Answers Already Passed It is important to maintain a positive grade away from the structure of at LEAST _______ inch drop per foot for six feet. A. 1/4 B. 1/2 C. 3/4 D. 1 1 Which of the following BEST describes the report statement shown below? "The roof is in good condition for its age." A. Conclusion B. Recommendation C. Description D. Disclaimer Conclusion Which of the following conditions would be LEAST critical to your client's safet...

Warm Air Heating System Equipment In a warm air heating system the cold air return registers are located a) in exterior walls b) in interior locations c) under windows d) in floors e) in ceilings - Answer-B The major disadvantage of an electric resistance coil furnace for warm air heating is a) the high cost of electricity b) the danger from electric shock c) the high cost of maintenance d) the large size of the furnace e) the location of electrical wiring - Answer-A Lowboy furnac...

In a warm air heating system the cold air return registers are located a) in exterior walls b) in interior locations c) under windows d) in floors e) in ceilings - Answer-B The major disadvantage of an electric resistance coil furnace for warm air heating is a) the high cost of electricity b) the danger from electric shock c) the high cost of maintenance d) the large size of the furnace e) the location of electrical wiring - Answer-A Lowboy furnaces are just over a) 1.0 m in h...

Journeyman Oil (For the State of Maine) Questions and Answers 100% AccurateJourneyman Oil (For the State of Maine) Questions and Answers 100% AccurateJourneyman Oil (For the State of Maine) Questions and Answers 100% AccurateJourneyman Oil (For the State of Maine) Questions and Answers 100% Accurate The use of furnace cement or other materials to seal a cracked heat exchanger or parts which provide closure shall be for _________ repairs only. - ANSWER-Temporary repairs The technician may ins...

HVAC Gas Heat Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: Why is specific gravity of a gas important? Answer: It affects the gas flow through the piping and through the orifice of the furnace. Q: What is an orifice and a spud? Answer: An orifice is a precisely sized hole in a gas fitting which gas flows from the manifold to the burners. A spud is another name for a gas fitting. Q: If both a light gas and a heavy gas are at...

_____, _____, _____ & _____ is the refrigeration cycle? - Expansion; evaporation; compression & condensation A 230 volt PFC compressor tries to start at 184 volts and trips on overload protection, the starting torque of the motor is _____? - Decrease by lower voltage A A/C system with zone control is obtained by mixing hot and cold air at the central unit in response to room thermostats is a _____ system? - Multi-zone A diulating switch is used to _____. - Change proportional action to two...

Fission correct answer: A neutron interaction in which a nucleus absorbs a neutron, splits into two new nuclei and releases a large amount of energy; the resulting fission fragments emit neutrons and gamma rays and then undergo radioactive decay Turbines correct answer: A device with rotating blades that are connected to a shaft and turned by having a fluid do work on the blades; in a nuclear power plant, steam turbines are rotated by expanding steam Describe how a nuclear power plant ge...

Which pump uses a high velocity jet of seawater to lower the pressure in the chamber around the converging nozzle? Jet (TRUE/FALSE) A fixed volume of fluid is discharged by an eductor regardless of head pressure. False Which type of heat exchanger has one or more coils of tubing installed inside a shell? Helical tube Which type of heat exchanger uses one fluid flow at right angles (90°) with the other fluid? Cross flow type The gear that is widely used in the main reduction gear C The ...