Azimuth is the sun’s height above the horizon.

• True

• False

Irradiance is a measure of how much solar power is striking a specific location.

• True

• False

Solar radiation data is used to size and estimate the performance of a PV system.

• True

• False

As a general rule, a PV array should be free of shade from 9:00 pm to 3:00 am.

• True

• False

The profile angle is the projection of the altitude angle onto an imaginary plane that is perpendicular to the surface of an obstruction.

• True

• False

____________________ is the solar irradiation received over a period of time, typically one day.

• Insolation.

• Photosynthesis.

• Evaporation.

• Condensation.

Solar ____________________ is a measure of the total amount of solar energy accumulated on an area over a period of time.

• irradiation.

• reflection.

• absorption.

• transmission.

For a PV array, the ____________________ angle is the angle clockwise from true north that the PV array faces.

• azimuth.

• elevation.

• tilt.

• zenith.

A good PV system installation begins with a proper site ____________________.

• evaluation.

• assessment.

• inspection.

• survey.

____________________ charts are often used to estimate shading at an installation site.

• Sun path

• Weather

• Temperature

• Wind