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

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 ...

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 (...

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...

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:...

MA 2nd CLASS FIREMAN’S PRACTICE EXAM 106 QUESTIONS WITH VERIFIED ANSWERS GRADED A+ 2024/2025 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 Correct Answer: c) 970 What is required to raise the temperature of 1 lb of water from 32 degrees to 212 degrees Fahrenheit? a) 144 Btu b) 180 Btu c) 970.3 Btu d) Saturated heat Correct Answer: b) 180 Btu Increasing the pressure has what effect on ...

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

Commercial Refrigeration FINAL TEST Questions with Verified Answers A SORIT, BEPR, or CDA valve may be used as a ____ valve Evaporator pressure regulating (EPR) A typical low temperature rack maintains a suction temperature of ____ -25 degrees F ARI Standard 710-86 specifies flow rates through a filter drier at a pressure drop of _____ 1 Psig How are the disadvantages overcome in compressors that are employed in low temperature applications? Use supplementary cooling How are t...

Stationary Engineer Exam Questions With Correct Answers Latest (GRADED A+) On a gas fired boiler what is the proper gas to air mixture - Answer 30%-70% and in special arrangements it can be as high as 100% . ANSWER CHAPTER 11 remember% What is the total hardness in a system that was found to have calcium hardness of 60ppm and magnesium hardness of 18ppm and carbon hardness of 12 ppm? - Answer TH=(Ca x 2.5) + (Mg x 4.1)nTH=(60 x 2.5) + (18 x 4.1)nTH= 150+73.8 =( 223.8 PPM) How often s...

BPI Building Analyst Study Guide; Questions and Answers 100% Solved How many BTU are in one therm of Natural Gas Correct answer 100,000 btu What is the volume of a single-story, slab foundation house with a width of 23 feet, length of 45 feet, and ceiling height of 9 feet? Correct answer 9315 cubic feet The area of a triangle can be calculated using the equation Correct answer (base x height)/ 2 What is the area of a door that is 36 inches wide by 80 inches tall? Correct answer 20 sq...

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 ...