Photovoltaic systems resource guide Posttest Flashcards
(50 cards)
Over discharge is the condition of a battery state of charge declining to the point where it can no longer supply discharge current without damaging the battery.
True
A rack-mounted photovoltaic array is a fixed array that replaces conventional building materials with specially designed modules that also perform an architectural function.
False
A grant is a tradable commodity that represents a certain amount of electricity generated from renewable resources.
False
Fill factor is the ratio of maximum power to the product of the open-circuit voltage and short-circuit current.
True
Zenith is the point in the sky directly overhead a particular location.
True
An authority having jurisdiction is the organization, office, or individual designated by local government with legal powers to administer, interpret, and enforce building codes.
True
Duty cycle is the percentage of time a load is operating.
True
Solar declination is the angle between the direction a compass needle points (toward magnetic north) and true geographic north.
False
Bimodal systems can be employed to manage and optimize utility energy use by utility customers that billed using time-of-use electric rates.
True
Renewable energy is expected to compose an increasingly larger portion of energy production.
True
The electrolyte in flooded, open-vent batteries must be maintained at proper levels by periodically adding acid.
False
A series is a PV device consisting of a number of individual cells connected electrically, laminated, encapsulated, and packaged into a frame.
False
Sizing PV systems for stand-alone operation involves two sets of calculations.
False
A hydrometer is an instrument used to measure the specific gravity of a liquid.
True
Diesel engines are well suited for constant loads, whereas gasoline engines can respond quickly to changing loads.
True
A circuit breaker is a protective enclosure used to terminate, combine, and connect various circuits or components together.
False
A transformer is a device that transfers energy from one circuit to another through magnetic coupling.
True
Significantly low specific gravity of individual battery cells indicates cell failure or shorts.
True
The payback period is the amount of time required for the avoided costs from an alternate energy source to match the cost of the chosen energy-production system.
True
A chip is a thin, flat disk or rectangle of base semiconductor material.
False
Capacitors store energy in an electrical field developed by two oppositely charged parallel conductive plates separated by a dielectric (insulating) material.
True
Working space is the clear space reserved around electrical equipment for the existing equipment and potential future additions.
False
Blocking is the addition of lumber under a roof surface and between trusses or rafters as supplemental structural support.
True
An independent power producer is a non-utility large-scale power producer that meets the technical and procedural requirements for interconnection to the utility sytem.
False
