NABCEP PV Associate (PVA) — Practice Exam
Core: modules: practice questions
Our NABCEP PV Associate bank has 10 questions on this topic. Here are 4 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
What is a bifacial module?
- A module that works on both AC and DC circuits without an inverter
- A module that can collect light on both its front and back
- A module that works on AC and DC
- A module with two junction boxes
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B. A module that can collect light on both its front and back — Rear-side gain depends on ground albedo and mounting height.
Question 2
What is short-circuit current (Isc)?
- The current measured at maximum power, when the module is delivering its rated output
- The current the inverter draws
- The current at maximum power
- The maximum current, measured when the module's terminals are shorted
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D. The maximum current, measured when the module's terminals are shorted — Voltage is zero at Isc.
Question 3
What is open-circuit voltage (Voc)?
- The highest voltage a module produces, measured with no load connected
- The voltage when the module is shorted
- The voltage measured at maximum power, when the module is delivering its rated output
- The voltage at maximum power
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A. The highest voltage a module produces, measured with no load connected — Current is zero at Voc.
Question 4
Which cell technology usually has the highest efficiency among common commercial modules?
- Polycrystalline silicon
- Organic PV
- Amorphous silicon thin film
- Monocrystalline silicon
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D. Monocrystalline silicon — Mono cells are cut from single crystals.