CEM AEE Certified Energy Manager (CEM) Free Practice Exam Questions (2025 Updated)
Prepare effectively for your AEE CEM Certified Energy Manager (CEM) certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.
Exhaust gases from an industrial furnace flow through a heat-recovery steam generator, which generates medium-pressure steam. This steam is used in a steam turbine to generate shaft power driving a fan. Which type of combined heat and power (CHP) cycle does this process describe?
What instrument is NOT used to measure temperature?
A fully-loaded heat pump unit delivers 36-kW thermal heating with a power draw of 12-kW electric. What is the coefficient of performance (COP) at full load?
If outside air has a temperature of 25°C dry bulb and 15°C wet bulb, what is the enthalpy of the air?
A compressed-air distribution system has one section that frequently has low pressure when demand for compressed air is high. How can you resolve the problem without increasing energy consumption?
Which of the following best describes a thermally-light building?
When should commissioning be included in the design and construction of a facility?
Natural gas costs $4.80/GJ. How much does it cost to heat 500 liters of water from 18°C to 50°C using a natural gas water heater with an efficiency of 85%? [The efficiency and fuel price are both based on HHV. The specific heat of water (C) is 4.2 kJ/kg-°C.]
A white paper with black text and numbers
AI-generated content may be incorrect.Which heat recovery device listed below can be used to preheat boiler make-up water using the heat energy from skimming blowdown?
If the temperature difference across an external wall is 20°C and the heat flow across the wall is 2.5 Watts/m², calculate the insulation value of the wall (including inside and outside air films)?
A facility has the thermal cooling load profile shown in the table below. The utility rate traffic has an no-peak time-of-use period that begins at 10:00 a.m ends at 7:00 p.m. What chiller capacity (output) is required for a load-leveling operating strategy?
[Question from the previous image, which was about chiller capacity for load leveling, but the table was missing]
How much fuel is required to heat 50 kg water from 20°C water to 200°C saturated steam? Assume the boiler is 80% efficient (based on the higher-heating value of the fuel).
Which of the following International Performance Measurement and Verification Protocol (IPMVP) options would you use to verify annual energy savings in a project that upgraded lighting in a large manufacturing plant?
The set point for the chiller supply water temperature is varied as a function of the thermal demand for space cooling. What do you call this control strategy?
What is the main cause of low power factor?
What is a common method to reduce the impact of voltage imbalance?
If installed without ancillary equipment, photovoltaic power cells generate what type of power?
A new energy-efficient boiler costs $60,890 to buy and install. The new energy-efficient boiler will save $15,400 per year and last for 20 years. What is the internal rate of return (IRR) of the project?
What type of heat transfer is reduced by adding insulation to the inside surface of a wall?
