Latent heat - Study guides, Revision notes & Summaries

WX 201 - Exam #1 Questions and Answers Permanent Gases in the Atmosphere Constant concentration in the atmosphere 78% Nitrogen, 21% Oxygen, 1% Other Gases: Argon, Neon, Helium, Krypton, Hydrogen Variable Gases in the Atmosphere The amount/concentration in the atmosphere varies or changes Includes: Water Vapor, Carbon Dioxide, Methane, and Ozone Sources produce gases Ex: decaying plants/animals, volcanoes, photosynthesis Sinks deplete (remove) gases Ex: soil bacteria, resp...

Power Engineering 4th Class - A2 Questions and Answers Rated A+ Convert -6°C to °F. (-6°C × 9/5) + 32 = 21.2°F a. 30.4°F b. 28.5°F c. 21.2°F d. 18.6°F e. 16.7°F c Convert 6°F to °C. (6°F − 32) × 5/9 = -14.44°C a. 30.4°C b. 28.5°C c. -14.4°C d. 18.6°C e. -16.7°C c How much heat must be supplied to 200 kg of water at 20°C to make steam at 850 kPa abs and 87% dry? a. 2039.4 kJ b. 407 880 kJ c. 1774.28 kJ d. 424 627.98 kJ e. 484 507.6 kJ...

1. Heat which causes a change in temperature of a substance is called; A. latent heat B. sensible heat C. superheat D. radiant heat - B. sensible heat 2. Heat added to a substance without a raise in temperature; (example: liquid refrigerant to gas) this process is called? A. latent heat of vaporization B. latent heat of fusion. C. superheat of vaporization D. superheat of fusion - A. latent heat of vaporization 3. Heat added to the refrigerant in a vapor state after the evaporation pr...

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 ...

1. Heat which causes a change in temperature of a substance is called; A. latent heat B. sensible heat C. superheat D. radiant heat - ans-B. sensible heat 2. Heat added to a substance without a raise in temperature; (example: liquid refrigerant to gas) this process is called? A. latent heat of vaporization B. latent heat of fusion. C. superheat of vaporization D. superheat of fusion - ans-A. latent heat of vaporization 3. Heat added to the refrigerant in a vapor state aft...

2024 IAI CERTIFICATION EXAM ACTUAL QUESTIONS AND ANSWERS WITH COMPLETE SOLUTION.(ALREADY GRADED A+) What sequence of latent print development techniques are used to develop prints from porous materials? Ans- DFO, Ninhydrin, Physical Developer The final purple coloured compound usually produced with the treatment of Ninhydrin Ans- Ruhemann's Purple What latent print development technique is used to process nonporous material that are wet? Ans- Small Particle Reagant A dye whi...

MCC HVAC MIDTERM EXAM QUESTIONS AND ANSWERS 100% PASS List at least five factors that must be controlled if a comfortable indoor environment is to be maintained. - Correct Answer ️️ -The factors that must be controlled include temperature, humidity, air motion, dust, bacteria, odors, toxic gases, and ionization. ((Ref: 1/1)) Describe in simple terms the basic process by which a refrigerant transfers heat energy. - Correct Answer ️️ -A refrigerant is used to transfer heat when it c...

HVAC BOMA 501 Study Guide Latest Update Graded A+ Dual Duct System A system in which hot air and cold air are supplied by separate ducts and mixed at each controlled space to provide the desired supply air temperature. This method consumes a great deal of energy. Muiltizone System an a/c system in which the zone control is obtained by mixing hot and cold air at the unit in response to a room thermostat Load Calulations take the sensible heat and the latent heat into consideration ...

According to ASHRAE Standard 62-1989, how many cubic feet per minute of air exchange should maintain an acceptable IAQ (indoor air quality) level? - The air exchange rate should be 15 cfm per person to maintain acceptable indoor air quality in a reception area. In office space and conference rooms, the standard is 20 cfm per person. At what pH level does descaling discharge have to be before being emptied into a river or stream? - Descaling discharge emptied directly into a river or stream...

NATE Final Exam 1 Questions With Correct Answers Latest Updated 2024/2025 (GRADED A+) If you purchased ten filter-driers for $100.00, what was the price of each filter-drier? A: $100.00 B: $10.00 C: $1.00 D: $1.10: B: $10.00 NATE Final Exam 1 Questions and Answers Latest Updated 2024/2025 (GRADED A+) 2 / 13 3. Which of the following jobs requires safety glasses? A: Driving a vehicle B: Extending a ladder C: Brazing D: Pulling thermostat wire: C: Brazing 4. Which of the following in...