Solar Photovoltaic (PV) Contractor Certification Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026|2027 Q&A | Instant Download Pdf

Solar Photovoltaic (PV) Contractor
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Certification Exam Practice Questions An d d d d




d Correct Answers (Verified Answers) Plus
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1. Which of the following best describes the function of a solar
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photovoltaic system? d




A. Converts thermal energy into electricity d d d d




B. Converts sunlight directly into electricity
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C. Stores solar energy as heat
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D. Converts wind into electricity d d d




B. Converts sunlight directly into electricity
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Photovoltaic cells generate electricity by converting sunlight directly into
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d electrical energy through the photovoltaic effect.
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2. What is the main component of a PV module?
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A. Copper plates d

, B. Silicon cells d




C. Aluminum foil d




D. Carbon fiber d




B. Silicon cells
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Most PV modules use silicon as the semiconductor material to create ele
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ctricity from sunlight.
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3. Which type of current is produced by solar panels?
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A. Alternating current (AC) d d




B. Pulsed current d




C. Direct current (DC) d d




D. Split phase current d d




C. Direct current (DC)
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PV cells produce DC electricity, which may then be converted to AC by an
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inverter.

4. The inverter in a PV system performs which key function?
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A. Converts DC to AC d d d




B. Stores excess energy d d




C. Controls panel tilt d d




D. Tracks the sun d d




A. Converts DC to AC d d d




Inverters convert the DC power generated by solar panels into AC powe
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r usable by most electrical systems.
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,5. Which is the typical efficiency range for commercial crystalline silicon
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PV modules?
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A. 5–8%
B. 10–12%
C. 15–22%
D. 30–40%
C. 15–22%
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Modern crystalline silicon modules commonly achieve efficiencies betwe
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en 15% and 22%.
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6. What does the term “peak sun hours” represent?
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A. Hours of daylight d d




B. Total daily radiation equivalent to 1 kW/m²
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C. Hours of maximum temperature d d d




D. Hours of battery charge d d d




B. Total daily radiation equivalent to 1 kW/m²
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Peak sun hours measure the equivalent full sun intensity received over a
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d day, crucial for sizing PV systems.
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7. Which factor most significantly reduces PV output?
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A. High altitude d




B. Cloudy weather d




C. Cold temperatures d




D. Thin air d




B. Cloudy weather
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, Clouds reduce irradiance reaching the modules, lowering energy product
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ion.

8. What is the primary purpose of a charge controller in a PV system?
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A. Convert AC to DC d d d




B. Prevent battery overcharge d d




C. Increase panel voltage d d




D. Track maximum power point
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B. Prevent battery overcharge
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Charge controllers regulate the voltage and current going to batteries to
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prevent overcharging and deep discharge.
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9. What is the main advantage of using a Maximum Power Point Tracking (
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MPPT) controller?
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A. Reduces wiring cost d d




B. Increases module surface temperature d d d




C. Optimizes power output from panels d d d d




D. Converts DC to AC d d d




C. Optimizes power output from panels
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MPPT controllers adjust voltage and current to harvest maximum availa
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ble power from PV modules.
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10. Which orientation maximizes solar production in the northern
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hemisphere?
A. North-facing
B. East-facing