Pv

Question 1

Unit of electromagnetic radiation

Answer 1

Photon

Question 2

N-type

Answer 2

Free electron

Question 3

P-type

Answer 3

Electron void

Question 4

Semi conductor

Answer 4

Insulating and conducting properties

Question 5

Doping

Answer 5

The process of adding small amounts of impurity elements to semi conductors to alter their electrical properties

Question 6

Traction battery

Answer 6

Designed for repeated deep discharge cycle service

Question 7

Lead acid battery

Answer 7

Most common and cheapest

Question 8

Primary battery

Answer 8

Cannot be recharged

Question 9

Charging steady-state

Answer 9

No electrical or chemical changes are occurring

Question 10

State of charge (SOC)

Answer 10

Percent of energy remaining in a battery compared to fully charged capacity

Question 11

Float

Answer 11

Battery charging at low charge rate that maintains full battery charge by counteracting self discharge

Question 12

What are battery charge controllers affected by

Answer 12

Temperature, voltage and irradiance

Question 13

Types of charge controllers

Answer 13

Series, shunt and MPPT

Question 14

waveforms

Answer 14

Shape of electrical current that varies overtime measured with frequency

Question 15

STC standard test condition

W/m squared

Answer 15

1000 w/m squared

Question 16

Bypass diode

Answer 16

Diode used to pass current around rather than through a group of PV cells

Question 17

Blocking diode

Answer 17

Used to prevent reversed current flow

Question 18

Module

Answer 18

Number of individual cells connected electrically packed in a frame

Question 19

Battery

Answer 19

A collection of cells that are contained in the same case and connected together electrically to produce a desired voltage

Question 20

Divisionairy charge controller

Answer 20

The charge controller that regulates charging current to a battery system by diverting access power to an auxiliary load

Question 21

Shunt

Answer 21

The charge controller that limits charging current to a battery system by short-circuiting the array

Question 22

Pulse width modulation (PWM)

Answer 22

A method of simulating waveforms by switching a series device on and off at high frequency and for variable lengths of time

Question 23

Maximum power point Tracking charge controller (MPPT)

Answer 23

The charge controller that operates the Array at its maximum power point under a range of operating conditions as well as regulates battery charging

Question 24

Power quality

Answer 24

The measure of how closely the power on an electrical circuit matches the nominal values of parameters such as voltage current harmonics and power factor

Question 25

Transient voltage

Answer 25

Undesirable voltage spike

Question 26

Transformer

Answer 26

A device that transfers energy from one circuit to another through magnetic coupling

Question 27

Ampacity

Answer 27

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

Question 28

Standalone PV system

Answer 28

What type of PV system that operates autonomously and supplies power to electrical loads independently of utility

Question 29

Hybrid PV system

Answer 29

System that includes an energy source other than an array and utility

Question 30

Bi- model

Answer 30

Can operate in either utility interactive or standalone mode and uses battery storage

Question 31

Three parties for PV install

Answer 31

NFPA, UL,IEEE

Question 32

Distribution

Answer 32

Centralized, synchronized and distributed

Question 33

Dual metering

Answer 33

Metering arrangement that measures energy exported to an imported from utility grid separately

Question 34

Net metering

Answer 34

Metering arrangement where any excess energy is exported to the utilities subtracted from the amount of energy imported from it