Free Certified Energy Auditor Certification Questions and Answers

Question 1

A lighting system's lumen depreciation factor is 0.85, and its dirt depreciation factor is 0.8. What is the total light loss percentage?

Accepted Answer

0.68

Answer

The total light loss factor is calculated by multiplying the lumen depreciation factor by the dirt depreciation factor. In this case, 0.85 (lumen depreciation) multiplied by 0.8 (dirt depreciation) equals 0.68. This combined factor represents the proportion of initial light output that is maintained over time due to lamp aging and dirt accumulation.

Question 2

Which terminal unit is unable to supply ventilation at minimum fresh air flow rates?

Accepted Answer

Fan Coil Unit

Answer

Fan Coil Units (FCUs) typically recirculate room air and are primarily designed for heating or cooling, not for introducing fresh outdoor ventilation air. While they can be part of a system that provides ventilation, the FCU itself does not inherently supply minimum fresh air flow rates. Other units like unit ventilators, VAV boxes, or induction systems are designed with provisions for outdoor air intake.

Question 3

Which of the following best describes an ideal start HVAC control strategy?

Accepted Answer

Operation of HVAC equipment is delayed to the shortest time possible to condition the building before it is occupied based on outdoor and indoor air temperatures

Answer

An ideal start HVAC control strategy optimizes the start-up time of HVAC equipment to ensure the building reaches comfortable conditions precisely when occupied, without wasting energy by starting too early. This is achieved by continuously calculating the latest possible start time based on current indoor and outdoor temperatures, as well as the building's thermal characteristics. This minimizes pre-occupancy energy consumption.

Question 4

A utility's electricity rate structure that differs according to the time of day is known as:

Accepted Answer

Time of use rate

Answer

A 'Time of Use rate' (TOU) is an electricity pricing structure where the cost of electricity varies depending on the time of day, day of the week, and season. Electricity is typically more expensive during peak demand periods (e.g., weekday afternoons) and cheaper during off-peak hours (e.g., nights and weekends). This encourages consumers to shift their energy consumption to less expensive times.

Question 5

Which of the following could involve using an infrared camera?

Accepted Answer

All of the above

Answer

An infrared camera, or thermal imager, detects infrared radiation emitted by objects, allowing it to visualize temperature differences. This makes it a versatile tool for energy audits, capable of identifying areas of heat loss from a building envelope, detecting excessive friction in mechanical components (indicating potential faults), and locating faulty electrical connections or overloaded circuits by observing their elevated temperatures. Therefore, all listed applications are valid.

Certified Energy Auditor Certification Practice Test

Certified Energy Auditor Certification Practice Test

Free Certified Energy Auditor Certification Questions and Answers