Solar Generations Practice test Flashcards
_____ components are the electrical and structural components, aside from the major components, that are required to complete a PV system.
Balance-of-system
_____ organizations test products for safety and conformity to standard requirements.
Product listing
positinoing windows to face _____ allows maximum sunlight and heat into the building.
south
A(n) _____ calculator is used to view the solar window for a particular location for assessing shading.
sun path
For ground-mounted arrays, the installer should evaluate the _____.
terrain, elevations, and soil conditions.
A(n) _____ is a collection of information about a facility’s or customer’s energy use.
energy audit
A(n) _____ is a unit of electromagnetic radiation.
photon
A _____ is a thin, flat disk or rectangle of base semiconductor material.
wafer
Standard test conditions (STC) rates module performance at a solar irradiance of _____ W/m².
1000
_____ charging is battery charging at a low charge rate that maintains full battery charge by counteracting self-discharge.
Float
_____ is the number of waveform cycles in one second.
Frequency
_____ are temporary undesirable voltages in an electrical circuit, ranging from a few volts to several thousand volts and lasting from a few microseconds up to a few milliseconds.
Transient voltages
A(n) _____ is a device that transfers energy from one circuit to another through magnetic coupling.
transformer
_____ systems can be sized according to either the stand-alone methodology or the interactive methodology.
Bimodal
A _____ load is a static structural load due to the weight of permanent building members, supported structure, and attatchments.
dead
Improper electrical integration can cause _____.
poor performance, component damage, and electrical shock hazards.
_____ is the current that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
Ampacity
A _____ box is a junction box used as the connection point for two or more circuits.
combiner
_____ is the starting and operation of a PV system for the first time.
Commissioning
A _____ is an instrument used to measure the specific gravity of a liquid.
hydrometer
A(n) _____ collector is a solar energy collector that enhances solar energy by focusing it on a smaller area through reflective surfaces or lenses.
concentrating
Special fall protection equipment or precautions are required when surveying at heights over _____ ft.
6
_____ are used to measure service voltages, load currents, power, and to check for continuity or energized circuits.
Multimeters
A(n) _____ layout drawing shows basic building dimensions and locations of major components.
site
It is sensible to apply energy _____ measures before installing PV systems because their initial costs and payback periods are substantially less than increasing the size of the PV system.
conservation
_____ is a metering arrangement where any excess energy exported to the utility is subtracted from the amount of energy imported from it.
Net metering
A(n) ______ cell is a semiconductor device that converts solar radiation into direct current electricity.
photovoltaic or PV
Changes in solar _____ have a small effect on voltage but a significant effect on the current output of PV devices.
irradiance
PV devices are first connected in series to achieve a desired voltage, forming a _____.
string
_____ is a method of protecting PV cell laminates by sealing them between a rigid backing material and a glass cover.
Encapsulation
A(n) _____ is an electrode consisting of active material supported by a grid framework.
plate
______ is the ratio of the density of a substance to the density of water.
Specific gravity
A(n) _____ is a group of batteries connected together with series and parallel connection to provide a specific voltage, current, and capacity.
battery bank
Connecting batteries in series increases system _____.
voltage
_____ perform one or more power processing and control functions in addition to inverting.
Power conditioning units PCU’s
A(n) _____ is a waveform component at an integer multiple of the fundamnetal waveform frequency.
harmonic
_____-system sizing is very flexible because the utility can supply extra energy to the system loads and receive excess energy from the PV system.
Interactive
_____ is an attachment method that relies on the weight of the array, support structure, and ballasting material to hold the array in position.
Self-ballasting
A(n) _____ is a device that opens the ungrounded and grounded conductors when a ground fault exceeds a certain amount.
ground-fault circuit interrupter
Total battery capacity is equal to the average load current multiplied by the _____ time.
discharge
