CEM by AEE Valid Free Exam Practice Test

Question 1

A facility owner is considering installing a new chiller. The installed project cost will be $300,000. The annual savings from the energy-saving project will be $45,000 for the 20-year life of the chiller. If an energy- service company requires a minimum 20% return on investment (pre-tax), will the energy-service company agree to finance this project?

A. Yes B. No

Correct Answer: B

Question 2

Which of the following is the primary benefit of integrating energy management with a Building Automation System (BAS) in a commercial facility?
SELECT THE CORRECT ANSWER

A. Simplified maintenance by eliminating the need for system diagnostics and fault detection B. Reduced initial installation costs compared to traditional control systems C. Increased energy efficiency by enabling real-time monitoring and automated adjustments to HVAC, lighting, and other systems D. Enhanced tenant satisfaction through manual lighting control in individual zones

Correct Answer: C

Question 3

A high-pressure steam system passes 180°C condensate (saturated liquid) through a steam trap to an atmospherically vented condensate receiver tank. If the steam trap is working properly, how much of the condensate mass can be lost out the vent of the receiver tank in the form of flash steam?

A. 100% B. 15% C. 6% D. 25% E. 66%

Correct Answer: B

Question 4

Thermal scans of electrical equipment are useful for:

A. Locating areas of high power factor B. Measuring the load on a refrigerant system C. Locating a loose electrical connection D. Reading current carrying capacity of installed conductors

Correct Answer: C

Explanation: Only visible for ExamsLabs members. You can sign-up / login (it's free).

Question 5

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?

A. Decrease the distribution pipe size to the remote load experiencing low pressure B. Install a receiver tank near the remote load experiencing low pressure C. Raise the supply air pressure D. Answers B and C

Correct Answer: B

Question 6

How does an enthalpy-based economizer control operate?

A. Comparing the difference in dry-bulb air temperature measurements of the return air and the outdoor air B. Using a constant mixed air proportion control sequence C. Using the dry-bulb temperature and relative humidity of both the outdoor-air and return-air D. Measuring the outdoor air dry-bulb temperature and relative humidity

Correct Answer: C

AEE Certified Energy Manager (CEM) - CEM Exam Practice Test