Renewable energy test 2 prt 2

A grid-connected PV system automatically continues supplying electricity during a utility outage as long as sunlight is available.

False

What does a synchronous inverter do in a grid-connected PV system?

Converts DC TO AC and matches grid voltage and frequency

What is net metering?

Recording the difference between electricity exported and imported

A dual-axis solar tracker follows both the sun's east-to-west movement and its elevation in the sky.

True

Why can shading one cell significantly reduce the output of an entire PV module?

A shaded cell can restrict current through the series connected cells

Which is an advantage of a fixed PV mounting system?

It has no moving parts and offers flexible mounting options

What are the standard test conditions used to rate PV module output?

1000W @ 25Degree

A silicon solar cell is exposed to stronger sunlight. What change should you expect in its electrical output?

Current increases

What is the main purpose of tempered glass on a typical photovoltaic module?

To protect solar cells

Under ideal conditions, connecting the same PV modules in series rather than parallel changes their total theoretical power output.

False

A basic PV system has no battery bank or inverter. Its array is connected directly to a DC water pump. What type of system is this?

Simple direct load PV SYSTEM

A single-axis solar tracker follows the sun's daily east-to-west movement.

True

Why might a fixed mounting system be a practical choice for an off-grid PV installation?

Less expensive

What does a solar resource assessment help determine?

The amount of solar energy available at a location

What is a photovoltaic array?

A group of photovoltaic modules connected together

The solar cells inside a typical photovoltaic module are connected in series.

True

What does the rated power output of a PV module represent?

Its power output under test conditions

An off-grid photovoltaic system is independent of the utility grid.

True

What makes a PV system grid-connected?

Connected to utility grid

A dual-axis tracker adjusts a PV array in two dimensions. Which two movements does it follow?

Compass direction and elevation

Why must a PV array have a higher rating than the amount of power the equipment actually needs?

electricity is lost as it moves through system

2. what is a Synchronous inverter

Matches grid voltage and frequency