NABCEP PV Associate (PVA) — Practice Exam
Core: electrical: practice questions
Our NABCEP PV Associate bank has 17 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
A 5 kW load runs for 3 hours. How much energy does it use?
- 1.67 kWh
- 5 kWh
- 8 kWh
- 15 kWh
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D. 15 kWh — 5 kW × 3 h.
Question 2
A module produces 8 amps at 40 volts. What is its power?
- 5 watts
- 32 watts
- 48 watts
- 320 watts
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D. 320 watts — 40 × 8.
Question 3
Two strings, each 400 V and 10 A, are connected in parallel. What is the combined output?
- 200 V and 10 A
- 400 V and 20 A
- 800 V and 10 A
- 800 V and 20 A
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B. 400 V and 20 A — Parallel: currents add, voltage stays the same.
Question 4
What is the frequency of utility AC power in the United States?
- 50 Hz
- 60 Hz
- 120 Hz
- 400 Hz
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B. 60 Hz — Grid-tied inverters must match utility voltage and frequency.
Question 5
When identical strings are connected in parallel, what adds up?
- Resistance
- Both voltage and current
- Current
- Voltage
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C. Current — In parallel, currents add and voltage stays the same.