Unit 310 - 9189

What is the best direction for a solar collector to face for optimal efficiency?

• North

• East

• South

• West

Which directions are suitable for mounting a solar collector panel, despite a reduction in efficiency?

• North, East, South

• East, South, West

• North, South, West

• North, East, West

What happens to the efficiency of a solar thermal system if the collector is not facing due south?

• It increases

• It remains the same

• It reduces

• It becomes zero

What is the commonly used compromise angle for the tilt of a solar collector panel?

• 15 degrees

• 30 degrees

• 45 degrees

• 60 degrees

Why is it not practical to alter the tilt angle of the solar collector panel frequently?

• It is too expensive

• It requires too much energy

• The sun's position changes too frequently

• It is not practical to adjust it constantly

During which season is the sun's elevation higher relative to the horizon?

• Spring

• Summer

• Autumn

• Winter

What is the ideal orientation of the solar collector relative to the sun's rays?

• Parallel

• Perpendicular

• At a 45-degree angle

• At a 30-degree angle

What should you be aware of when positioning solar collector panels?

• The color of the roof

• The type of solar panels

• Structures, trees, chimneys, and aerials that could shade the collector

• The brand of the solar panels

Why might you need to visit the property at different times of the day when positioning solar collector panels?

• To check the temperature

• To note any shadows

• To measure the wind speed

• To see the color of the sky

What needs to be surveyed before installing a collector panel on a property?

• The electrical wiring

• The plumbing system

• The roof area

• The garden area