Quiz-summary
0 of 10 questions completed
Questions:
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
Information
Practice Questions
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 10 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- Answered
- Review
-
Question 1 of 10
1. Question
How does temperature affect voltage?
Correct
According to the Nernst equation, temperature and voltage are inversely related.
Incorrect
According to the Nernst equation, temperature and voltage are inversely related.
-
Question 2 of 10
2. Question
What is the definition of high voltage?
Correct
The definition of high voltage is subjective to what a worker is dealing with. For example, 12V is low for lighting systems, but so is 600V for utility companies. For laymen, 600V is high voltage.
Incorrect
The definition of high voltage is subjective to what a worker is dealing with. For example, 12V is low for lighting systems, but so is 600V for utility companies. For laymen, 600V is high voltage.
-
Question 3 of 10
3. Question
How many Watt hours is there in a 2000mAh 9V battery?
Correct
Solution: Convert 2000mAh to Ah (2000mAh/1000 = 2 Ah) then multiply ([2Ah]*[9V] = 18Wh).
Incorrect
Solution: Convert 2000mAh to Ah (2000mAh/1000 = 2 Ah) then multiply ([2Ah]*[9V] = 18Wh).
-
Question 4 of 10
4. Question
Which of the following is a solar rule of thumb?
Correct
PV arrays should be kept from the shade from 9 am to 3 pm during peak sun hours. For summer, PV arrays’ tilt is best at latitude minus 15 degrees, for winter it is latitude plus 15 degrees.
Incorrect
PV arrays should be kept from the shade from 9 am to 3 pm during peak sun hours. For summer, PV arrays’ tilt is best at latitude minus 15 degrees, for winter it is latitude plus 15 degrees.
-
Question 5 of 10
5. Question
Which of the following qualifies a self-regulating system to not have a charge controller?
Correct
According to the National Electric Code, if only less than 3% of battery capacity will be generated in an hour’s charge, then the battery will not be prone to overcharging. Thus, a charge controller wouldn’t be necessary.
Incorrect
According to the National Electric Code, if only less than 3% of battery capacity will be generated in an hour’s charge, then the battery will not be prone to overcharging. Thus, a charge controller wouldn’t be necessary.
-
Question 6 of 10
6. Question
In a location with an average temperature of -40°C, how many PV modules can be put in a series?
Correct
Solution: -40°C – 25°C = -65°C => (-65°C)(-0.33%/°C) = 21.45% Voc increase => (1.2145)(40V) = 48.6V => 550V/48.4V = 11.4
Incorrect
Solution: -40°C – 25°C = -65°C => (-65°C)(-0.33%/°C) = 21.45% Voc increase => (1.2145)(40V) = 48.6V => 550V/48.4V = 11.4
-
Question 7 of 10
7. Question
A PV system has a solar module, battery, and inverter. Which of the following is the most likely to be powered by this system?
Correct
The PV system described is a self-regulating PV system that is used to store relatively large amounts of energy compared to its output. The lighthouse buoy light is the most suitable for this system because it doesn’t need large amounts of energy to operate, but it needs to be powered continuously even through cloudy days.
Incorrect
The PV system described is a self-regulating PV system that is used to store relatively large amounts of energy compared to its output. The lighthouse buoy light is the most suitable for this system because it doesn’t need large amounts of energy to operate, but it needs to be powered continuously even through cloudy days.
-
Question 8 of 10
8. Question
Calculate the power of a module with 15V Vmp and 4 Amp Imp.
Correct
Simply multiply Vmp and Imp to get power. Solution: (15V)(4 Amp) = 60W
Incorrect
Simply multiply Vmp and Imp to get power. Solution: (15V)(4 Amp) = 60W
-
Question 9 of 10
9. Question
How does too small of a PV array affect A battery?
Correct
A PV that is too small would undercharge a battery, which decreases battery life
Incorrect
A PV that is too small would undercharge a battery, which decreases battery life
-
Question 10 of 10
10. Question
Which of the following is not a PV label requirement?
Correct
Having a small fuse would be inconvenient, but not as dangerous as having too big of a fuse which is useless in protecting the PV. There’s no such thing as minimum series fuse rating.
Incorrect
Having a small fuse would be inconvenient, but not as dangerous as having too big of a fuse which is useless in protecting the PV. There’s no such thing as minimum series fuse rating.