PV System Quiz

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