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AEE CEM Exam Syllabus Topics:

AEE Certified Energy Manager (CEM) Sample Questions:

1. Why do electric utility companies transmit power at high voltages?
SELECT THE CORRECT ANSWER

A) Higher voltages are safer
B) Higher voltages are more stable
C) Transmission power losses (12R) are less
D) Electrical frequency is more stable

2. If a boiler cycles on and off too frequently, what control can you adjust to reduce the number of times a boiler cycles on and off?

A) Increase the controller differential
B) Reduce the controller differential
C) Increase the controller set point

3. What is the main cause of low power factor?

A) Low-load induction motors
B) Computers and electronic equipment
C) Harmonics
D) Solar flares
E) Fluorescent lighting

4. Lighting systems operate with a certain recoverable light loss factor. Control systems with photocell sensor inputs combined with dimming ballasts can be used to regulate dimming levels to maintain a continuous light level in the work space. Which of the following best describes this type of control?

A) Open-loop controller
B) Two-position controller
C) Demand-limiting controller
D) Closed-loop controller

5. The primary advantage of predictive maintenance over preventive maintenance in building energy systems, is that predictive maintenance:
SELECT THE CORRECT ANSWER

A) Focuses exclusively on energy savings by optimizing system set points
B) Schedules routine checks at fixed intervals to reduce downtime
C) Eliminates the need for regular inspections, reducing operational costs (Note: This option is selected in the image)
D) Uses real-time data and analytics to identify potential failures before they occur, minimizing unexpected outages

Solutions: