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Question 1 of 10
1. Question
What is the maximum system voltage if there are 16 modules with 18V Voc and 1.2 correction factor?
Correct
Solution: (16)(18V)(1.2) = 346V
Incorrect
Solution: (16)(18V)(1.2) = 346V
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Question 2 of 10
2. Question
Which of the following mainly affects current?
Correct
Though other factors also affect current, the factor that affects it the most is solar cell size. It is not the amount of solar cells which affects voltage instead.
Incorrect
Though other factors also affect current, the factor that affects it the most is solar cell size. It is not the amount of solar cells which affects voltage instead.
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Question 3 of 10
3. Question
Calculate the power of a module with 30V Vmp and 12 Amp Imp.
Correct
Solution: (30 Vmp)(12 Amp) = 360W
Incorrect
Solution: (30 Vmp)(12 Amp) = 360W
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Question 4 of 10
4. Question
Why should PVs not be tilted near zero degrees?
Correct
PV modules should be titled at least 5 degrees for them to be able to “self-clean” and avoid soiling. If they’re tilted too low, dirt or snow wouldn’t be able to slide down the modules, thus blocking the light.
Incorrect
PV modules should be titled at least 5 degrees for them to be able to “self-clean” and avoid soiling. If they’re tilted too low, dirt or snow wouldn’t be able to slide down the modules, thus blocking the light.
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Question 5 of 10
5. Question
Which of the following is not true about measuring solar power?
Correct
All the other choices are true, and the average peak sun hours per day is used to quantify solar energy, not solar power.
Incorrect
All the other choices are true, and the average peak sun hours per day is used to quantify solar energy, not solar power.
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Question 6 of 10
6. Question
Why is the Atmospheric Mass tested in PV factories?
Correct
The atmosphere is thinner at high altitudes, making it easier for the sun to penetrate and more energy will be generated by the PV.
Incorrect
The atmosphere is thinner at high altitudes, making it easier for the sun to penetrate and more energy will be generated by the PV.
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Question 7 of 10
7. Question
Calculate the efficiency of a 370W PV module that is 1.5m by 2m.
Correct
Solution: (1.5m)(2m) = 3sqm => 370W/3sqm = 123W/sqm => (123W/sqm)/(1000W/sqm) = 0.123 => (0.123)(100%) => 12.3% efficient
Incorrect
Solution: (1.5m)(2m) = 3sqm => 370W/3sqm = 123W/sqm => (123W/sqm)/(1000W/sqm) = 0.123 => (0.123)(100%) => 12.3% efficient
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Question 8 of 10
8. Question
How does albedo affect PV systems?
Correct
Albedo is another word for reflected light, which increases current.
Incorrect
Albedo is another word for reflected light, which increases current.
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Question 9 of 10
9. Question
A PV system has a solar module connected to a load. Which of the following is the most likely to be the load being powered by this system?
Correct
The PV system being described is a direct-coupled PV system which only generates power during the day. A solar attic fan is mostly needed during the day, so a direct-coupled PV system is ideal for it.
Incorrect
The PV system being described is a direct-coupled PV system which only generates power during the day. A solar attic fan is mostly needed during the day, so a direct-coupled PV system is ideal for it.
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Question 10 of 10
10. Question
Which of the following is not true about peak sun hours per day?
Correct
The unit of Peak Sun Hour or PSH is kWh/m^2/day.
Incorrect
The unit of Peak Sun Hour or PSH is kWh/m^2/day.