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Question 1 of 10
1. Question
Who approves PV system interconnections?
Correct
To get PV interconnections approved, one must go to the utility office because they have the trained human resources to do so.
Incorrect
To get PV interconnections approved, one must go to the utility office because they have the trained human resources to do so.
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Question 2 of 10
2. Question
Which of the following describes the float stage in battery charging?
Correct
The other statements describe the other charging states like bulk (charging is fast), absorption (charge is slowing down), and equalization (charging voltage is at its highest).
Incorrect
The other statements describe the other charging states like bulk (charging is fast), absorption (charge is slowing down), and equalization (charging voltage is at its highest).
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Question 3 of 10
3. Question
Convert 800W to kW.
Correct
Solution: 800W/1000 = 0.8kW
Incorrect
Solution: 800W/1000 = 0.8kW
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Question 4 of 10
4. Question
How much 17% efficient PV will fit in a 15m^2 roof?
Correct
Solution: Get irradiance ((17%)(1000W/m^2) = 200W/m^2). Multiply area and irradiance ((15m^2)( 170W/m^2) = 2550W) then convert W to kW (2550W/1000 = 2.6kW).
Incorrect
Solution: Get irradiance ((17%)(1000W/m^2) = 200W/m^2). Multiply area and irradiance ((15m^2)( 170W/m^2) = 2550W) then convert W to kW (2550W/1000 = 2.6kW).
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Question 5 of 10
5. Question
What is the yearly production of a 6kW PV placed in a spot which gets 4 PSH and generates 11% losses?
Correct
Get the derating factor (1 – 11% = 0.89) then multiply ((6kW)(0.89)(4 PSH)(365 days) = 7796kWh). Use the unit kWh when measuring energy output unless stated otherwise.
Incorrect
Get the derating factor (1 – 11% = 0.89) then multiply ((6kW)(0.89)(4 PSH)(365 days) = 7796kWh). Use the unit kWh when measuring energy output unless stated otherwise.
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Question 6 of 10
6. Question
Which of the following PV parts is the smallest that can still be installed?
Correct
The answer is PV module because when it is connected by a source circuit, it forms a solar panel which can then be configured into larger groups or arrays.
Incorrect
The answer is PV module because when it is connected by a source circuit, it forms a solar panel which can then be configured into larger groups or arrays.
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Question 7 of 10
7. Question
Which of the following is a 500W PV equivalent to?
Correct
Since a kW is equal to 1000W, and half of 1000W is 500W, so half a kW is 500W.
Incorrect
Since a kW is equal to 1000W, and half of 1000W is 500W, so half a kW is 500W.
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Question 8 of 10
8. Question
Why are PVs tilted higher during winter?
Correct
It is done because the sun is lower during winter due to the Earth’s orbital motion.
Incorrect
It is done because the sun is lower during winter due to the Earth’s orbital motion.
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Question 9 of 10
9. Question
How many Ah is used by a 15V 4A light for 22 hours?
Correct
Ignore the voltage because it’s not needed in this question. Solution: (4A)(22 hours) = 88Ah
Incorrect
Ignore the voltage because it’s not needed in this question. Solution: (4A)(22 hours) = 88Ah
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Question 10 of 10
10. Question
Which grid voltage is the lowest?
Correct
The question asked for grid voltage, thus eliminating direct coupled and battery. Service equipment’s is the lowest because it’s in the building.
Incorrect
The question asked for grid voltage, thus eliminating direct coupled and battery. Service equipment’s is the lowest because it’s in the building.