CITY & GUILDS 2365 UNIT 614 -
ENVIRONMENTAL TECHNOLOGY
SYSTEMS FINAL EXAM | QUESTIONS
AND ANSWERS |2026/2027 UPDATE |
JUST RELEASED
1. Which legislative document provides specific guidance on the conservation of fuel and
power in new and existing buildings in England?
A. Approved Document L
B. Approved Document P
C. Approved Document G
D. Approved Document F
Answer: A
Conceptual Explanation: Approved Document L (Part L) covers the conservation of fuel
and power, setting the standards for energy efficiency in buildings.
2. What is the primary function of an inverter within a grid-connected Solar Photovoltaic (PV)
system?
A. To convert DC electricity from the panels into AC electricity for the grid
B. To increase the voltage of the DC supply to match the battery bank
,C. To convert AC electricity from the grid into DC for appliance use
D. To regulate the temperature of the PV cells during peak sunlight
Answer: A
Conceptual Explanation: PV panels generate Direct Current (DC), which must be
converted to Alternating Current (AC) by an inverter to be used in standard electrical
installations or exported to the grid.
3. In the context of Heat Pumps, what does the term ‘Coefficient of Performance’ (COP)
represent?
A. The total heat energy lost through the building fabric
B. The ratio of heat output to the electrical energy input
C. The speed at which the compressor cycles during operation
D. The difference between the outdoor air temperature and the indoor setting
Answer: B
Conceptual Explanation: COP is the ratio of useful heat produced by the system to the
electricity consumed to drive it. A COP of 3 means 3kW of heat is produced for every 1kW
of electricity used.
4. Which of the following is a key requirement for the Microgeneration Certification Scheme
(MCS)?
A. It only applies to systems larger than 50kW
, B. It is a mandatory requirement under the Wiring Regulations BS 7671
C. It ensures products and installers meet consistent quality standards
D. It relates specifically to the disposal of hazardous waste
Answer: C
Conceptual Explanation: MCS is an internationally recognized quality assurance scheme
which certifies microgeneration technologies used to produce electricity and heat from
renewable sources.
5. What is the main environmental benefit of utilizing a Greywater Recycling system?
A. It reduces the demand for treated mains-quality water for non-potable uses
B. It eliminates the need for any mains water connection
C. It generates electricity through the flow of waste water
D. It treats sewage to a drinkable standard
Answer: A
Conceptual Explanation: Greywater recycling collects water from showers and sinks to be
reused for flushing toilets or irrigation, reducing the overall consumption of high-quality
treated drinking water.
6. Which type of solar thermal collector is generally the most efficient in colder climates due
to its insulation properties?
A. Flat plate collector
ENVIRONMENTAL TECHNOLOGY
SYSTEMS FINAL EXAM | QUESTIONS
AND ANSWERS |2026/2027 UPDATE |
JUST RELEASED
1. Which legislative document provides specific guidance on the conservation of fuel and
power in new and existing buildings in England?
A. Approved Document L
B. Approved Document P
C. Approved Document G
D. Approved Document F
Answer: A
Conceptual Explanation: Approved Document L (Part L) covers the conservation of fuel
and power, setting the standards for energy efficiency in buildings.
2. What is the primary function of an inverter within a grid-connected Solar Photovoltaic (PV)
system?
A. To convert DC electricity from the panels into AC electricity for the grid
B. To increase the voltage of the DC supply to match the battery bank
,C. To convert AC electricity from the grid into DC for appliance use
D. To regulate the temperature of the PV cells during peak sunlight
Answer: A
Conceptual Explanation: PV panels generate Direct Current (DC), which must be
converted to Alternating Current (AC) by an inverter to be used in standard electrical
installations or exported to the grid.
3. In the context of Heat Pumps, what does the term ‘Coefficient of Performance’ (COP)
represent?
A. The total heat energy lost through the building fabric
B. The ratio of heat output to the electrical energy input
C. The speed at which the compressor cycles during operation
D. The difference between the outdoor air temperature and the indoor setting
Answer: B
Conceptual Explanation: COP is the ratio of useful heat produced by the system to the
electricity consumed to drive it. A COP of 3 means 3kW of heat is produced for every 1kW
of electricity used.
4. Which of the following is a key requirement for the Microgeneration Certification Scheme
(MCS)?
A. It only applies to systems larger than 50kW
, B. It is a mandatory requirement under the Wiring Regulations BS 7671
C. It ensures products and installers meet consistent quality standards
D. It relates specifically to the disposal of hazardous waste
Answer: C
Conceptual Explanation: MCS is an internationally recognized quality assurance scheme
which certifies microgeneration technologies used to produce electricity and heat from
renewable sources.
5. What is the main environmental benefit of utilizing a Greywater Recycling system?
A. It reduces the demand for treated mains-quality water for non-potable uses
B. It eliminates the need for any mains water connection
C. It generates electricity through the flow of waste water
D. It treats sewage to a drinkable standard
Answer: A
Conceptual Explanation: Greywater recycling collects water from showers and sinks to be
reused for flushing toilets or irrigation, reducing the overall consumption of high-quality
treated drinking water.
6. Which type of solar thermal collector is generally the most efficient in colder climates due
to its insulation properties?
A. Flat plate collector
