Test 3 Flashcards
Cost and funding of PV systems are usually the customer’s primary concern.
True
A GPS receiver identifies only latitude coordinates.
False
PV systems are high-density power generators, so only small surface areas are required to produce appreciable amounts of power.
False
It is never advantageous to face an array in a direction other than due south.
False
Shading on solar thermal collectors reduces performance by an amount proportional to the level of shading.
True
The photographic method of shading analysis compares a panoramic photo of the potential obstructions to a sun path diagram.
True
Most inverters can be installed either indoors or outdoors, as long as they are kept dry and have enough space around them for airflow.
True
The efficiency of a building envelope is how well it isolates the indoor environment from the outdoor environment.
True
Materials, equipment, designs, or installation practices for PV systems are independent of environmental conditions.
False
One or more potential array locations must be identified during a site survery.
True
Building codes affect PV system ____.
planning, design, and installation. (all of the above)
A(n) ____ is a visit to the installation site to assess the site conditions and establish the needs and requirements for the system.
site survey
A(n) ____ calculator is used to view the solar window for a particular location for assessing shading.
sun path
____ is the angle between the direction a compass needle points (toward magnetic north) and true geographic north.
Magnetic declination
The ____ angle is the angle from the horizontal to the top of an obstruction, as viewed from a specific location.
profile
For ground-mounted arrays, the installer should evaluate the ____.
terrain, elevations, and soil conditions. (all of the above)
A(n) ____ is a collection of information about a facility’s or customer’s energy use.
energy audit
Accurate ___ ranges for a site are particularly important because this significantly affects the operation and performance of modules, batteries, and inverters.
temperature
The DC power output of an array during low insolation should provide about ____% of the minimum AC power requirement.
130
Energy management includes ____.
the use of automatic controls, adjusting setpoints, and adopting sensible choices in appliance use. (all of the above)
Special fall protection equipment or precautions are required when surveying at heights over _____ feet.
6
____ are used to measure service voltages, load currents, power, and to check for continuity or nergized circuits.
multimeters
The easiest way to measure the slope of a roof for rooftop installation is with a(n) _____ finder.
angle
On a compass, true south is found by subtracting the declination from the direction of ____ south.
magnetic
The extent of shading at any given location can be determined by comparing the height and location of shading obstructions to the solar ____.
window
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
____ should include performance estimates for monthly and annual energy production.
proposals
The ____ orientation of the roof is the direction, such as southwest or due south, that the sloped surface faces.
azimuth
Predesigned systems offered by major suppliers and ____ can simplify planning and preparation.
integrators
