APES Unit 6 Progress Check: MCQ Part B
Which of the following best describes how a homeowner using an off-the-grid PV solar system, as seen in the graph above, can power a home between 9:00 PM and 6:00 AM? - ANS ✔C) Using excess energy from a sunny day stored in batteries for power
Which of the following time periods has the highest energy output? - ANS ✔B) 12PM - 2PM
Which of the following graphs best predicts the solar energy output in the town in Germany in December? - ANS ✔B)
Wind energy is increasingly relied upon to help meet global energy needs. Wind energy can be used to generate electricity using wind turbines.Which of the following best describes electricity generation using wind turbines? - ANS ✔B) Wind turbines can be constructed on either vertical or horizontal axes.
Wind energy is increasingly relied upon to help meet global energy needs. Wind energy can be used to generate electricity using wind turbines.Which of the following correctly identifies the sequence of energy conversions that occur in a wind turbine? - ANS ✔C) Kinetic energy → mechanical energy → electrical energy
Which of the following are often used for energy storage of wind power? - ANS ✔C) Batteries
Refrigerator A uses 500 watts per hour when the motor is operating. The motor needs to run an average of 12 hours per day, every day, to stay at a constant, cold temperature. This model of refrigerator lasts an average of 20 years before it needs to be replaced and costs $1,000.Each kWh of electricity costs $0.12.How many kilowatt hours (kWh) per year does refrigerator A use? - ANS ✔C) 2,190kWh
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