What is a btu - Study guides, Class notes & Summaries

HVAC PRETEST BOMA EXAM QUESTIONS AND ANSWERS Two basic categories of chillers are the ___. a. Compression cycle and absorption b. purge and absorption c. absorption and lithium bromide d. purge and lithium bromide - ANS a. Compression cycle and absorption The five requirements for comfort are proper temperature, humidity, filtration, _____, and ventilation. a. circulation b. velocity c. . d. none of the above - ANS a. circulation The primary function of an expansion dev...

Special (License Grade) - Answer-Work in any type of plant Grade C (License Grade) - Answer-Can operate low-pressure steam or hot water (no steam engines/turbines) Grade B (License Grade) - Answer-Can operate high-pressure or low-pressure steam or hot water (no steam engines/turbines) Grade A (License Grade) - Answer-Can operate any plant including plants with steam engines/turbines Special (License Class) - Answer-Take Charge (max 50 hpr) Shift Engineer (max 100 hpr) 2nd Class (...

At 0 PSIG, how many BTU are necessary to change 1 lb of water at 212 degrees Fahrenheit into 1 lb of steam? a) 144 b) 180 c) 970 d) 1,190 - Answer-c) 970 Radiation is a) the movement of liquids or gases created by a temperature difference. b) the transfer of heat by direct molecular contact. c) the weight of a substance compared to unity. d) a form of heat transfer by waves. - Answer-d) a form of heat transfer by waves. Steam at 100 PSI and 400 degrees Fahrenheit is a) saturated. ...

1kwh of electric power is equivalent to ___ btu per hour. A. 3142 B. 6412 C. 9412 D. 6812 - correct answer A Gas valves operate at ____ voltage. A. 120v B. 230v C. 24v D. 12v - correct answer C What will be the resistance in the circuit if the supply voltage is 30v and current flowing through the circuit is 5A. A. 3 ohms B. 1/3 ohms C. 1/6 ohms D. 6 ohms - correct answer D Furnaces are placed into categories based upon. A. Venting characteristics B. B

HVAC Gas Heat Certification Exam (New 2024/ 2025 Update) Questions and Verified Answers 100% Correct | A Grade QUESTION Duct wrap is used to insulate round metal ducts. What is the approximate R-value for "one inch" of this insulation Answer: R= 3.0 QUESTION A category 1 natural gas furnace has a typical air temperature rise of Answer: 60°F - 120°F QUESTION A technician connects the electrical circuit to an 80,000 BTU gas furnace with a 3- ton ...

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...

BPI Study Test Questions and Answers 100% Solved What is a BTU? Correct answer British Thermal Unit - the amount of energy required to heat 1 pound of water 1 degrees Fahrenheit Why does warm air rise? Correct answer Warm air is less dense than cool air What is a thermal boundary? Correct answer A line or plane defined by insulation and air barrier What is NOT a goal of air leakage control? Correct answer Meeting code (no code exists for air leakage)

HVAC NATE Gas Heat Exam Prep (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: When starting up a dual system, the temperature rise method for determining airflow cannot be used with compressor cycle of the heat pump because: Answer: The capacity of the system varies too much with outdoor temperature. Q: The flame pattern a technician would expect to see on a properly operating single stage gas furnace equipped with "in shot" type burner is a:...

Refrigeration Machine Operator Course - Turner Exam Questions And Answers What is refrigeration - ANS Refrigeration is the removing of heat from an object or mass and then dissipating that same heat in a place where it's presence will not be objectionable. "Refrigeration systems move heat" The refrigeration process is made possible by - ANS Boiling a refrigerant BTU "British Thermal Unit" - ANS A BTU is the quantity of heat needed to raise one pound of water one degree ...

G2 Questions and Answers with Verified Solutions What is the min. diameter for a leak test gauge? 3" Amp meter can read? Conductor magnetic field. What would the primary voltage to the furnace be? 120/1/60 What is the function of the intermittent pilot? Stays on during the main burner operation. What is the millivolt power output of a closed circuit thermocouple? 10 - 15 mv dc A pilot with a lazy yellow flame indicates? Orifice is too large. For flame rectification the most important part...