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Question 1 of 10
1. Question
Which of the following would be increased more along with PV array elevation?
Correct
There is less atmosphere as elevation increases which leads to more irradiance. When there’s more irradiance, then there’s more current.
Incorrect
There is less atmosphere as elevation increases which leads to more irradiance. When there’s more irradiance, then there’s more current.

Question 2 of 10
2. Question
Why can’t only one sun chart be use for all countries?
Correct
A sun chart or sun path chart can only be used in the latitude it’s made for to take into account the tilt angles.
Incorrect
A sun chart or sun path chart can only be used in the latitude it’s made for to take into account the tilt angles.

Question 3 of 10
3. Question
How many Ah is used by a 9A light for a year?
Correct
Solution: (365 days)(24 hours) = 8760 hours => (9A)(8760 hours) = 78840Ah
Incorrect
Solution: (365 days)(24 hours) = 8760 hours => (9A)(8760 hours) = 78840Ah

Question 4 of 10
4. Question
Which of the following test conditions have the highest voltage?
Correct
NOCT, CEC, and PTC have lower voltages than STC.
Incorrect
NOCT, CEC, and PTC have lower voltages than STC.

Question 5 of 10
5. Question
Which of the following describes the absorption stage in battery charging?
Correct
The other statements describe the other charging states like bulk (charging is fast), float (trickle charge), and equalization (charging voltage is at its highest).
Incorrect
The other statements describe the other charging states like bulk (charging is fast), float (trickle charge), and equalization (charging voltage is at its highest).

Question 6 of 10
6. Question
Convert 3kW to HP.
Correct
Note that 1HP is equal to 746W. Convert kW to W ((3)(1000) = 3000W) then divide (3000W/746W = 4HP).
Incorrect
Note that 1HP is equal to 746W. Convert kW to W ((3)(1000) = 3000W) then divide (3000W/746W = 4HP).

Question 7 of 10
7. Question
Which of the following is specified on a charge controller?
Correct
Aside from charge controllers, most equipment will specify maximum voltage and current.
Incorrect
Aside from charge controllers, most equipment will specify maximum voltage and current.

Question 8 of 10
8. Question
Calculate the resistance in an 800W microwave oven plugged in a 220V socket with a current of 3.636A.
Correct
Here, power is misleading information because the current is already given. Directly apply the resistance formula (220V/3.636A = 61Ω).
Incorrect
Here, power is misleading information because the current is already given. Directly apply the resistance formula (220V/3.636A = 61Ω).

Question 9 of 10
9. Question
Which of the following increases in a parallel PV circuit?
Correct
The answer is current because the property of a parallel circuit is that it increases current, while series circuits increase voltage.
Incorrect
The answer is current because the property of a parallel circuit is that it increases current, while series circuits increase voltage.

Question 10 of 10
10. Question
What is the maximum voltage of a PV system with 13 modules if the Voc is 18V and the correction factor is 1.4?
Correct
Solution: (13 modules)(18V)(1.4 correction factor) = 328V
Incorrect
Solution: (13 modules)(18V)(1.4 correction factor) = 328V