Renewable energy test 2 PRT 3

Which factor must be considered when selecting a mounting method for a PV array?

Wind and snow loading

What is one major advantage of a ground-mounted PV system compared with a roof-mounted system?

Easier orientation tilt

A PV installation has 12 kWh of available energy and an inverter efficiency of 90%. How much energy is delivered?

Output x effiency

A battery-based PV system has a charge controller efficiency of 90%, battery efficiency of 80%, and inverter efficiency of 95%. What is the approximate overall system efficiency?

Multiple all percentage

A 6 kW PV array receives 5 equivalent solar hours per day. If overall system efficiency is 80%, what is the estimated daily energy production?

Output x hours x effiency

Why can PV source-circuit conductors remain energized after a disconnect is opened?

PV modules can produce voltage whenever certain amount of light reaches them

What is the primary purpose of rapid shutdown in certain PV installations?

Reduces hazardous voltage in areas

During a roof-mounted PV installation, which factor specifically helps determine whether the roof can support the equipment?

Rafters and truss

Which of the following is a possible structural effect of wind on a PV installation?

Wind uplift on the array

Which of the following is a potential cause of a DC arc fault?

Damaged conductor insulation

Which item is specifically included among the building-code considerations for renewable-energy installations?

Fire access and required clearances

During a PV module inspection, an electrician notices that the layers of the module are beginning to separate. What type of damage is this?

Delamination

A technician is inspecting the mechanical components of a tracking PV system. Which component should receive attention?

Tracking mechanisms

During an inspection, a technician finds that electrical conductors are not properly supported. Which inspection category does this concern?

Electrical connections

A PV array has uneven snow coverage across its modules. What electrical production problem can this create?

Partial shading

A renewable-energy installation is being planned for a location with limited available land. Which mounting method would make use of existing building space?

Roof mounting

A PV installation requires roof penetrations for its mounting attachments. Which building-related concern should be considered?

Water proofing and roof penetrations

Which requirement is specifically identified among the regulatory considerations for renewable-energy installations?

Equipment certification requirements

When planning a PV installation, why should seasonal changes in the sun's position be considered?

It affects the amount of available sunlight through the year

A technician is reviewing the manufacturer's maintenance instructions for a renewable-energy system. Which item should be checked to ensure mechanical fasteners are properly tightened?

Torque requirements

Which of the following is an example of a change in the surrounding environment that should be checked during PV system maintenance?

A new building constructed near the area

Which structural consideration specifically concerns the forces transferred through the renewable-energy equipment and its supporting structure?

Mechanical forces

A technician wants to assess how much sunlight a proposed array location receives at different times of day and throughout the seasons. Which tool from the slides is designed for this?

A solar pathfinder

Question 2. A technician is inspecting a battery bank. Which item should be checked as part of the battery inspection, where applicable?

The battery’s state of charge

Question 5. A ground-mounted PV array is being designed in an area that receives heavy snowfall. Which design factor must be considered?

The local snow load on the structure

Question 9. An installer is checking PV connectors during a maintenance inspection. Which finding would indicate that further attention is needed?

Connectors show signs of moisture and heat damage

Power is measured in:

KW AND describes rate of energy transfer