Question 1

List inverter system designs.

Accepted Answer

These include Micro-Inverter, String Inverter, and Central Inverter designs.

Question 2

What is a monopole subarray?

Accepted Answer

A monopole subarray is a PV array having an output circuit with two conductors, one negative and one positive.

Question 3

Define the term qualified person.

Accepted Answer

Qualified person is defined in Article 100 as someone that has skills and knowledge in electrical systems installation and has received safety training.

Question 4

The output of the ac module shall be considered an inverter ____.
A) output cycle
B) source cycle
C) output circuit
D) source circuit

Accepted Answer

The output of the ac module is considered an inverter output circuit, as it refers to the electrical path through which the inverter delivers power to the load or grid.

Question 5

A central inverter system is defined simply as a PV system with a(n) ____.
A) tangential inverter system
B) longitudinal inverter system
C) axial inverter system
D) single inverter system

Accepted Answer

A central inverter system refers to a PV system with a single inverter that is used to convert the DC power generated by the solar panels into AC power that can be used by homes or businesses. A tangential, longitudinal, or axial inverter system do not exist in the context of solar power systems.

Question 6

With an AC module system, we do not calculate the system components as we would do with a standard system.

Accepted Answer

In an AC module system, the components are pre-assembled and pre-wired, so we do not need to calculate them individually as we would with a standard system.

Question 7

AC module systems shall be permitted to have a single detection device to detect AC ____ and disconnect the AC power from the module.
A) false cycles
B) high temperatures
C) ground faults
D) high pressures

Accepted Answer

AC module systems are required to have a disconnect device that can detect ground faults and disconnect the AC power to protect against electric shock hazards. False cycles, high temperatures, and high pressures are not electrical hazards that require a disconnect device.

Question 8

An array is an assembly of panels or ____ mechanically integrated with a support structure and other components as required (foundation, tracker, etc.) that will form a direct current power producing unit.
A) modules
B) inverters
C) generators
D) oscillators

Accepted Answer

An array consists of multiple solar panels or modules that are assembled together to generate direct current power. Inverters, generators, and oscillators are all components that may be used in a solar power system but are not specifically related to the definition of an array.

Question 9

AFCP devices must detect and interrupt the DC arc faults and then disconnect or disable the inverters or ____ and all the system components in the faulted circuit.
A) polarity controllers
B) charge protectors
C) circuit protectors
D) charge controllers

Accepted Answer

AFCP devices must detect and interrupt DC arc faults and then disconnect or disable the inverters or charge controllers, along with all system components in the faulted circuit, to prevent electrical fires and ensure system safety. Charge controllers are used in solar power systems to regulate the charging of batteries, making them a critical component in managing the system's electrical flow and safety.

Question 10

In an electrical system, fuses are used to protect the wiring and equipment from excessive pressure.

Accepted Answer

Fuses are used to protect the wiring and equipment from excessive current, not pressure.

Question 11

In a string system, if one of the string inverters is out for service, the other inverter(s) will stay on line producing an output.

Accepted Answer

In a string system, the other inverters will continue to produce output even if one of them is out for service.

Question 12

It is required that each inverter or interconnecting system must have a(n) ____ or circuit breaker.
A) bussman fuse
B) ignition fuse
C) plug fuse
D) dedicated fuse

Accepted Answer

A dedicated fuse or circuit breaker is the best choice as it provides protection against overload or short circuit in the specific inverter or interconnecting system. Bussman fuses are designed for high current applications and may not be suitable. Ignition fuses and plug fuses are designed for specific applications and may not be compatible with the inverter or interconnecting system.

Question 13

Every solar panel is a(n) ____.
A) electrical inverter
B) electrical generator
C) electrical cell
D) electrical micro-inverter

Accepted Answer

A solar panel is an electrical generator as it converts sunlight into electricity.

Question 14

How does NEC article 690.2 define an alternating current (AC) module?

Accepted Answer

The answer of How does NEC article 690.2 define an...

Question 15

In a string inverter system, the inverter should be as close to the array as possible to reduce ____.
A) DC cycles due to temperature
B) DC losses due to voltage drop
C) DC fluctuations due to temperature
D) DC imbalances due to voltage drop

Accepted Answer

In a string inverter system, the DC voltage from the solar panels can experience voltage drop over long distances. Placing the inverter close to the array can reduce these losses and improve overall system performance. While temperature can also impact the efficiency of the system, it is not directly related to the distance between the array and inverter. Similarly, DC imbalances are also related to the inverter design rather than its physical location.

Question 16

All PV systems are potentially dangerous from an installation and maintenance point of view.

Accepted Answer

PV systems involve DC voltage and high current, which can pose a risk of electrical shock or fire. Safe installation and maintenance practices, such as proper grounding and the use of personal protective equipment, must be followed to minimize these risks.

Question 17

What does the acronym AFCP stand for?

Accepted Answer

The answer of What does the acronym AFCP stand for?...

Question 18

In a string array system, there are a number of ____ in the or on the building of the installation.
A) grid-based tools
B) circle inverters
C) grid-tied inverters
D) square inverters

Accepted Answer

In a string array system, grid-tied inverters are required to convert the DC electricity generated by the solar panels into AC electricity that can be used by the building or sent back to the grid. Grid-based tools, circle inverters, and square inverters are not relevant to this process.

Question 19

Any discernible electrical portion of an array can be considered a subpole.

Accepted Answer

A subpole is not a standard term used to describe a portion of an electrical array. The term "subpole" does not have a recognized definition in electrical engineering or related fields.

Question 20

There is a potential danger of combining the circuits of two ____ where the sum of the voltages, without consideration of the polarity, will exceed the rating of the conductor insulation.
A) monopole subarrays
B) counterarrays
C) multipole subarrays
D) multiarrays

Accepted Answer

The answer of There is a potential danger of combining...

Quiz 3: Photovoltaic System Examples

List inverter system designs.

What is a monopole subarray?

Define the term qualified person.

The output of the ac module shall be considered an inverter ____.

A central inverter system is defined simply as a PV system with a(n) ____.

With an AC module system, we do not calculate the system components as we would do with a standard system.

AC module systems shall be permitted to have a single detection device to detect AC ____ and disconnect the AC power from the module.

An array is an assembly of panels or ____ mechanically integrated with a support structure and other components as required (foundation, tracker, etc.) that will form a direct current power producing unit.

AFCP devices must detect and interrupt the DC arc faults and then disconnect or disable the inverters or ____ and all the system components in the faulted circuit.

In an electrical system, fuses are used to protect the wiring and equipment from excessive pressure.

In a string system, if one of the string inverters is out for service, the other inverter(s) will stay on line producing an output.

It is required that each inverter or interconnecting system must have a(n) ____ or circuit breaker.

Every solar panel is a(n) ____.

How does NEC article 690.2 define an alternating current (AC) module?

In a string inverter system, the inverter should be as close to the array as possible to reduce ____.

All PV systems are potentially dangerous from an installation and maintenance point of view.

What does the acronym AFCP stand for?

In a string array system, there are a number of ____ in the or on the building of the installation.

Any discernible electrical portion of an array can be considered a subpole.

There is a potential danger of combining the circuits of two ____ where the sum of the voltages, without consideration of the polarity, will exceed the rating of the conductor insulation.