WorksheetsPV System Quiz
Total questions: 16
Worksheet time: 16mins
What is a disadvantage of stand-alone systems?
Energy loss due to battery inefficiencies
They are always connected to the grid
They are less efficient in summer
They require more sunlight
What is the main consideration when sizing a PV system?
Sunlight and energy needs
Color of the panels
Type of roof
Number of batteries
What is a key consideration for grid-tied systems without batteries?
Power requirements
PV budget
Energy production goal in kWh/yr
Days of autonomy
What is the derating factor if there are 10% losses?
0.9
0.8
0.85
0.95
In the practice test question, what is the derating factor for 12% losses?
0.88
0.9
0.85
0.92
How much energy will a 7kWdc PV system produce in a month with 4.5 PSH and 12% losses?
650kWh
145kWh
830kWh
90kWh
What is the primary use of a Solar Pathfinder?
To track solar panel efficiency
To measure shading
To calculate energy costs
To store solar energy
Which month is the critical design month and has the worst insolation?
December
March
September
June
Which tilt is best for summer and spring?
Latitude -15 degrees tilt
Latitude tilt
30-degree tilt
Latitude +15 degrees tilt
What is the allowed range for array soiling derate factor?
0.300 - 0.995
0.970 - 0.995
0.800 - 1.050
0.88 - 0.98
What is the benefit of PV prices falling?
Increased energy consumption
More expensive installations
Better investment opportunities
Reduced system efficiency
What is the effect of snow on PV panels?
Increases voltage
Decreases current
Increases current
Decreases voltage
What is the efficiency of the average PV module installed?
10%
15%
20%
25%
When derating for Inverter and Transformer what is the allowable range?
A 14KWDC PV system with 18? losses in a location with 5.1 PSH per day will make how much energy in a year?
What is the grid Tied inverter size based on?
