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