Exam (elaborations)
NABCEP STUDY GUIDE Questions with Correct Answers
- Course
- Institution
NABCEP STUDY GUIDE Questions with Correct Answers
[Show more]
Content preview
NABCEP STUDY GUIDE Questions with CorrectAnswers
Balance of System Compontents Correct Answer-Used to conduct,
distribute and control flow of power in the system. (Everything besides
modules and inverters).
Power Conditioning Components Correct Answer-Inverters, Charge
Controllers, Maximum Power Point Trackers
Stand Alone PV Systems Correct Answer-Operate independently of
other electrical systems (ie the Grid)
Interactive PV Systems Correct Answer-Operate in parallel and are
interconnected and synchronized with the electrical grid.
Power Correct Answer-Power is the RATE of transferring energy.
Expressed in Watts.
*Think of an hourly wage**
Energy (definition) Correct Answer-The TOTAL amount of power used
over time
**Think Total Income**
Energy (Equation) Correct Answer-Energy (Wh) = Avg. Power (W) x
Time (hr)
,1 Megawatt = ? Correct Answer-1,000,000 Watts
(Myyyyyyyyyyyy..........KingHenrysDrunkenUncleDrinksChocolateMilk
Power Density (Define) Correct Answer-Power per area of measurement
(Watts/Square Foot)
Power Density (Equation) Correct Answer-Power Density of Module =
Watts of Module / Square Footage of Module
Ex:
175 W module that is 14.4 Square Feet has power density of 12.2 W/sf
Solar Azimuth Angle Correct Answer-Defines the direction of the sun's
horizontal projection relative to a point on Earth.
Solar Altitude Angle Correct Answer-Defines the Suns elevation above
the horizon.
Zenith Angle Correct Answer-Angle of the sun in comparison to the
zenith (90 degrees)
Opposite of Altitude Angle (added together the two should be 90)
,Sun Path Diagram Correct Answer-A graphical representation of the
Sun's altitude and Azimuth angles over a given day of the year (for a
specific latitude)
Solar Noon Correct Answer-The local time when the Sun is at it's
highest point in the sky and crossing the local meridian (line of
Longitude).
It's rarely noon.
Best way to find it is to find the projected sunset and sunrise time and
then determine the midway point.
Summer Solstice Correct Answer-First Day of Summer (June 21st)
Winter Solstice Correct Answer-First Day of Winter (December 21st)
Fall Equinox Correct Answer-First Day of Fall (September 21st)
Spring Equinox Correct Answer-First Day of Spring (March 21st)
Declination Correct Answer-The angular distance of a point north or
south of the celestial equator.
*The sun varies + or - 23.45 degrees throughout the year
, Determine Solar Altitude Angles for Region Correct Answer-Maximum
and Minimum Solar Altitude Angles are determined by the Winter and
Summer Solstice.
The equation is as follows:
90 - (Latitude) + Solar Declination
Example:
At Latitude 40 the range would be determined as follows
SUMMER SOLSTICE
90 - 40 + 23.45 = 73.45
WINTER SOLSTICE
90 - 40 + (-23.45) = 26.55
ALTITUDE ANGLE RANGE FOR 40 Deg LAT
73.45 to 26.55
Solar Window Correct Answer-The range of Sun paths for a specific
latitude between Winter and Summer solstices.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78998 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now