Exam 3 - Exam 3 2. What is the physical meaning of...

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Exam 3 2. What is the physical meaning of coefficient of performance? (2 Points) A. It is the amount of heat moved between the reservoirs for every u B. It is the amount of work required to move one unit of heat betwe C. It is the amount of heat needed to produce one unit of work D. It is the amount of work needed to produce one unit of heat Refer to screen 8 in 'Lesson 8b - Cooling and Heating' Points Earne d: 0/2 Correct Answer: A Your Response: B 3. When a heat pump is used to heat a house in the winter, how will the coefficient of performance be affected if the inside set temperature is changed from 65 o F to 70 o F? (2 Points) A. it increases B. it may become negative C. it decreases D. it stays the same Refer to screen 8 in 'Lesson 8b - Cooling and Heating' Points Earne d: 2/2 Correct Answer: C Your Response: C 4. Which one of the following is true about a geothermal heat pump? (2 Points)
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Exam 3 A. It requires a lot of maintenance B. It saves energy and the environment C. Its operating costs are high for its usage in the long run D. It can provide heat in winter but cannot cool the house in summer Refer to screen 21 in 'Lesson 8b - Cooling and Heating' Points Earne d: 2/2 Correct Answer: B Your Response: B 5. What is the name given to the weatherization process used in sealing cracks in windows, doors and walls? (2 Points) A. Painting B. Insulating C. Caulking Refer to screen 33 in 'Lesson 8b - Cooling and Heating' Points Earne d: 2/2 Correct Answer: C Your Response: C 6. Insolation is a combination of the following words _____. (2 Points) A. Incident solar radiation B. Instrumental solar insulation C. Intricate solar variation D. Involved solar saturation The amount of solar radiation reaching the earth is called the insolation. This is a short form for INcident SOLar radiATION Refer to screen 24 in 'Lesson 8b - Cooling and Heating' Points Earned: 2/2
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Exam 3 Correct Answer: A Your Response: A 7. Which one of the following items is used in a passive solar heating system? (2 Points) A. Photo-voltaic Cells B. Flat Plate Collectors C. South facing windows D. A Geothermal Heat Pump Refer to screen 30 in 'Lesson 8b - Cooling and Heating' Points Earned: 2/2 Co rr ect A ns we r: C Yo ur Re sp on se: C 8. Solar and GHP heating systems have absolutely no impact on the environment. (2 Points) Both solar and GHP heating systems both require the use of pumps that use electricity. Although the amount is small, it uses electricity, and with generation of electricity, there are emissions. Refer to screen 21 in 'Lesson 8b - Cooling and Heating' Points Earned : 2/2 Correct Answer: False Your Response: False 9. The compressor of a heat pump system ___________ the pressure of the refrigerant, ________ its temperature. (2 Points)
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Exam 3 A. decreases, lowering B. increases, lowering C. decreases, raising D. increases, raising The compressor increases the refrigerants pressure, increasing its temperature. Refer to screen 5 in 'Lesson 8b - Cooling and Heating' Points Earned:
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Exam 3 - Exam 3 2. What is the physical meaning of...

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