Solar Generations Practice test

Question 1

_____ components are the electrical and structural components, aside from the major components, that are required to complete a PV system.

Answer 1

Balance-of-system

Question 2

_____ organizations test products for safety and conformity to standard requirements.

Answer 2

Product listing

Question 3

positinoing windows to face _____ allows maximum sunlight and heat into the building.

Answer 3

south

Question 4

A(n) _____ calculator is used to view the solar window for a particular location for assessing shading.

Answer 4

sun path

Question 5

For ground-mounted arrays, the installer should evaluate the _____.

Answer 5

terrain, elevations, and soil conditions.

Question 6

A(n) _____ is a collection of information about a facility’s or customer’s energy use.

Answer 6

energy audit

Question 7

A(n) _____ is a unit of electromagnetic radiation.

Answer 7

photon

Question 8

A _____ is a thin, flat disk or rectangle of base semiconductor material.

Answer 8

wafer

Question 9

Standard test conditions (STC) rates module performance at a solar irradiance of _____ W/m².

Answer 9

1000

Question 10

_____ charging is battery charging at a low charge rate that maintains full battery charge by counteracting self-discharge.

Answer 10

Float

Question 11

_____ is the number of waveform cycles in one second.

Answer 11

Frequency

Question 12

_____ 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.

Answer 12

Transient voltages

Question 13

A(n) _____ is a device that transfers energy from one circuit to another through magnetic coupling.

Answer 13

transformer

Question 14

_____ systems can be sized according to either the stand-alone methodology or the interactive methodology.

Answer 14

Bimodal

Question 15

A _____ load is a static structural load due to the weight of permanent building members, supported structure, and attatchments.

Answer 15

dead

Question 16

Improper electrical integration can cause _____.

Answer 16

poor performance, component damage, and electrical shock hazards.

Question 17

_____ is the current that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

Answer 17

Ampacity

Question 18

A _____ box is a junction box used as the connection point for two or more circuits.

Answer 18

combiner

Question 19

_____ is the starting and operation of a PV system for the first time.

Answer 19

Commissioning

Question 20

A _____ is an instrument used to measure the specific gravity of a liquid.

Answer 20

hydrometer

Question 21

A(n) _____ collector is a solar energy collector that enhances solar energy by focusing it on a smaller area through reflective surfaces or lenses.

Answer 21

concentrating

Question 22

Special fall protection equipment or precautions are required when surveying at heights over _____ ft.

Answer 22

6

Question 23

_____ are used to measure service voltages, load currents, power, and to check for continuity or energized circuits.

Answer 23

Multimeters

Question 24

A(n) _____ layout drawing shows basic building dimensions and locations of major components.

Answer 24

site

Question 25

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.

Answer 25

conservation

Question 26

_____ is a metering arrangement where any excess energy exported to the utility is subtracted from the amount of energy imported from it.

Answer 26

Net metering

Question 27

A(n) ______ cell is a semiconductor device that converts solar radiation into direct current electricity.

Answer 27

photovoltaic or PV

Question 28

Changes in solar _____ have a small effect on voltage but a significant effect on the current output of PV devices.

Answer 28

irradiance

Question 29

PV devices are first connected in series to achieve a desired voltage, forming a _____.

Answer 29

string

Question 30

_____ is a method of protecting PV cell laminates by sealing them between a rigid backing material and a glass cover.

Answer 30

Encapsulation

Question 31

A(n) _____ is an electrode consisting of active material supported by a grid framework.

Answer 31

plate

Question 32

______ is the ratio of the density of a substance to the density of water.

Answer 32

Specific gravity

Question 33

A(n) _____ is a group of batteries connected together with series and parallel connection to provide a specific voltage, current, and capacity.

Answer 33

battery bank

Question 34

Connecting batteries in series increases system _____.

Answer 34

voltage

Question 35

_____ perform one or more power processing and control functions in addition to inverting.

Answer 35

Power conditioning units PCU's

Question 36

A(n) _____ is a waveform component at an integer multiple of the fundamnetal waveform frequency.

Answer 36

harmonic

Question 37

_____-system sizing is very flexible because the utility can supply extra energy to the system loads and receive excess energy from the PV system.

Answer 37

Interactive

Question 38

_____ is an attachment method that relies on the weight of the array, support structure, and ballasting material to hold the array in position.

Answer 38

Self-ballasting

Question 39

A(n) _____ is a device that opens the ungrounded and grounded conductors when a ground fault exceeds a certain amount.

Answer 39

ground-fault circuit interrupter

Question 40

Total battery capacity is equal to the average load current multiplied by the _____ time.

Answer 40

discharge