Which technology is least efficient for reducing carbon emissions?

• Ground-source heat pump
• Air-source heat pump
• Biomass heating
• Solar thermal

What is the primary function of a solar photovoltaic system?

• Heat water
• Generate electricity
• Pump water
• Store energy

Which of the following systems relies on underground temperature consistency for energy extraction?

• Solar thermal
• Air-source heat pump
• Ground-source heat pump
• Biomass

Which renewable energy source is most dependent on local wind speeds?

• Micro-hydro
• Solar photovoltaic
• Micro-wind
• Biomass

What is a significant disadvantage of micro-hydro systems?

• High carbon emissions
• Dependence on water flow
• High initial cost
• High maintenance cost

Which technology can provide both electricity and heat simultaneously in a domestic setting?

• Solar photovoltaic
• Micro-wind
• Ground-source heat pump
• Micro-combined heat and power

Which energy system is least likely to be effective in an urban environment?

• Air-source heat pump
• Solar thermal
• Micro-wind
• Biomass

What aspect is critical for the effective operation of a rainwater harvesting system?

• High solar radiation
• Consistent rainfall
• Wind speed
• Ground temperature

Which system is best suited for regions with shallow groundwater?

• Ground-source heat pump
• Air-source heat pump
• Micro-hydro
• Rainwater harvesting

Which technology uses a compressor to transfer heat from outside air to inside a building?

• Solar thermal
• Biomass
• Ground-source heat pump
• Air-source heat pump