Hello All - I am new to the forum and this is my first post. If I'm in the wrong category I apologize up front. Anyway, I downloaded a practice test for the nabcep exam and this one question has me stumped. Either the answer key is wrong or I'm unable to grasp why the answer is correct. So any help understanding this is much appreciated. Below is the question (from pvstudent.com) and the answer key shows C - 6 months as correct. I answered A - 0 months. I answered 0 months because the most north latitude the earth will tilt directly at the sun is 23.5deg during the summer solstice. If the panels are above that at 38 degrees and completing upright and facing away from the sun, how do they get any light hitting the panels?
If you had modules facing directly north and oriented vertically (90 degrees tilt) would
there be a time of the year when the sun rays would hit the panels at 38 degrees latitude?
If so, how many months of the year would the sun hit the north facing modules?
a. 0 months
b. 3 months
c. 6 months
d. 9 months
If you had modules facing directly north and oriented vertically (90 degrees tilt) would
there be a time of the year when the sun rays would hit the panels at 38 degrees latitude?
If so, how many months of the year would the sun hit the north facing modules?
a. 0 months
b. 3 months
c. 6 months
d. 9 months
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