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How to design and build a solar power system
Contributed by: Sadler
  • 1. What is the first step in designing a solar power system?
A) Purchase an inverter.
B) Determine energy needs.
C) Apply for permits.
D) Install solar panels.
  • 2. What unit is used to measure the energy produced by a solar panel?
A) Ohm
B) Ampere
C) Watt
D) Volt
  • 3. What is an inverter's primary function in a solar system?
A) Convert DC to AC.
B) Convert AC to DC.
C) Regulate voltage.
D) Store energy.
  • 4. What type of battery is commonly used in off-grid solar systems?
A) Car battery
B) AAA battery
C) Lithium-ion (only)
D) Deep cycle
  • 5. What does MPPT stand for?
A) Maximum Power Point Tracking
B) Maximum Performance Panel Technology
C) Minimum Power Point Tracking
D) Minimum Performance Panel Technology
  • 6. What is solar irradiance?
A) Battery capacity.
B) Inverter size.
C) Panel efficiency.
D) Solar power per unit area.
  • 7. What is the ideal tilt angle for solar panels?
A) 90 degrees
B) 0 degrees
C) 45 degrees
D) Latitude angle
  • 8. What is the purpose of a charge controller?
A) Convert AC to DC.
B) Regulate battery charging.
C) Convert DC to AC.
D) Regulate AC voltage.
  • 9. What is the typical lifespan of a solar panel?
A) 5-10 years
B) 10-15 years
C) 25-30 years
D) 50-60 years
  • 10. What is a common safety hazard when working with solar systems?
A) Electrical shock
B) Sunburn
C) Falling debris
D) Mosquito bites
  • 11. What is a grid-tied solar system?
A) Connected to the utility grid.
B) Using only battery storage.
C) Powered by diesel generator.
D) Standalone power source.
  • 12. Which of the following is a type of solar panel?
A) Geothermal
B) Wind turbine
C) Hydroelectric
D) Monocrystalline
  • 13. What does NEC stand for in the solar industry?
A) North East Corridor
B) National Energy Council
C) National Electrical Code
D) New Energy Corporation
  • 14. What is the voltage of a typical residential solar panel?
A) 12V
B) 240V
C) 120V
D) Around 30-40V
  • 15. What is shading's effect on solar panel output?
A) Increases output slightly.
B) Can increase output up to 50%
C) Reduces output significantly.
D) Has no effect.
  • 16. What type of wire is best for solar panel connections?
A) Phone wire
B) Regular household wire
C) Aluminum wire
D) UV-resistant wire
  • 17. What is a kilowatt-hour (kWh)?
A) Unit of current
B) Unit of energy
C) Unit of power
D) Unit of voltage
  • 18. What is net metering?
A) Metering water usage.
B) Credits for excess energy sent to grid.
C) Direct current electricity.
D) Measuring panel efficiency.
  • 19. How is the size of a solar array determined?
A) Local climate conditions only.
B) Energy consumption and available space.
C) Number of batteries.
D) Size of the inverter.
  • 20. What is the purpose of grounding in a solar system?
A) Reduce system cost.
B) Improve panel efficiency.
C) Increase battery lifespan.
D) Safety from electrical faults.
  • 21. What is DC Disconnect?
A) Disconnect between inverter and AC load
B) Disconnect between grid and house
C) Disconnect between battery and charge controller
D) Disconnect between panels and inverter.
  • 22. What is the primary cause of solar panel degradation?
A) Lack of sunlight.
B) Overuse of panels
C) Excessive cleaning
D) Material degradation over time.
  • 23. What does ROI stand for in solar investment?
A) Rate of Interest
B) Risk of Implementation
C) Revenue on Income
D) Return on Investment
  • 24. Which material is commonly used in the semiconductor of a solar cell?
A) Iron
B) Silicon
C) Copper
D) Aluminum
  • 25. What is the benefit of a bi-facial solar panel?
A) Lower upfront cost.
B) Higher voltage output.
C) Generates power from both sides.
D) Smaller physical size.
  • 26. What is a string inverter?
A) Inverter connected to a series of panels.
B) Inverter powered by batteries only.
C) Inverter located on each panel.
D) Inverter for off-grid systems only.
  • 27. What is a microinverter?
A) Battery powered inverter.
B) DC to DC converter.
C) Large centralized inverter.
D) Inverter located on each panel.
  • 28. What is azimuth?
A) Voltage of solar panel.
B) Direction of solar panel facing.
C) Tilt of solar panel.
D) Type of solar panel.
  • 29. What is the main function of a combiner box?
A) Store excess solar energy.
B) Combine multiple strings of panels
C) Convert DC to AC power.
D) Regulate the voltage.
  • 30. Why is ventilation important for solar panel installation?
A) Makes panels easier to clean.
B) Prevents water damage.
C) Reduces panel temperature.
D) Increases panel efficiency.
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