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18 Cards in this Set
- Front
- Back
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Photovoltaics rely on unique properties of _____ to convert solar radiation directly into electricity |
Semiconductors |
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What factor would typically limit the power output of a photovoltaic array that could be installed on a residential rooftop area? |
Area |
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The energy product of photovoltaic modules and arrays overtime is primarily determined by _____ |
Irradiation |
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What is the average solar irradiation on a surface that receives a 4 kilowatt hour per square meter over a 10 hour period |
400 W/m² |
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The peak solar irradiation incident outside the earth's atmosphere is approximately ____ times the nominal peak terrestrial irradiation at sea level |
1.3 |
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A horizontal surface generally receive the max amount of solar radiation during?? |
Summer |
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A pyranometer is used to measure ____ and _____ solar radiation |
Diffuse and direct |
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Shading analysis is a typical test conducted during a?? |
Site survey |
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Large obstruction towards the south side and a present the greatest overall shading effect on a?? |
Photovoltaic array |
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A ____ photovoltaic system operates autonomously |
Stand alone |
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Balance of system components consist of wiring, disconnects, switchgear,overcurrent protection, conduit systems and mounting supplies |
Know all |
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___ is the process typically used for applying n-type semiconductors material to n-type silicon wafer |
Gas diffusion |
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In the figure below, A is a short circuit amperage, B is the max current Point, C is the max voltage point, D is open circuit voltage point in it is a maximum power point |
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Photovoltaic modules are connected in parallel to build ____ and _____ output |
Current , power |
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A unique feature of alternating current photovoltaic modules is |
That no Field installable DC wiring is present 690.2 & 690.6(A) |
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What is the primary distinction between interactive inverters and rotating generators |
Rotating generators can act as loads while inverters cannot |
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IEEE 1547 installations standards apply to photovoltaic and other generators less then ____ |
10 megawatts |
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If a 120V inverter output is placed between one ungrounded conductor and the neutral of a 240V system, what is the result? |
It adds to the load connected between the neutral and any one ungrounded conductor 705.95(A) |
