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AEE Certified Energy Manager (CEM) Sample Questions:

1. If the initial design process includes group relamping, how can this reduce the number of lamps required to illuminate a space?

A) Group relamping cannot reduce the number of lamps required to illuminate a space
B) Group relamping requires using larger Wattage lamps, which means fewer lamps are required to illuminate a space
C) Group relamping reduces the overall amount of lamp breakages, which means fewer lamps are required to illuminate a space.
D) Group relamping reduces factors that contribute to light loss, which means fewer lamps are required to illuminate a space
E) Group relamping improves the room cavity ratio, which means fewer lamps are required to illuminate a space

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

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

3. Which of the following best describes a dead band in controls?

A) The delay in response of a system to a controlled change
B) A system which changes the output of a controller based on how fast a variable is moving from or to a set point
C) The difference between a sensor variable and its set point
D) A value that has been assigned to a controlled variable
E) A range around a set point with no change in state even though there is a change in sensor input

4. Which pump system listed below is most likely the best application for converting to variable-speed drive for energy savings?
SELECT THE CORRECT ANSWER

A) Reciprocating pump with on-off control, transferring liquid vertically for one hour per day
B) Positive displacement rotary lobe pumps in parallel, in a constant flow rebar quenching application with a static head of 80 m and negligible friction head
C) Centrifugal pump varying its flowrate with bypass control, circulating liquid in a closed loop cooling system
D) Piston pump operating at full capacity with throttle valve fully open, transferring liquid from an underground dam to the roof of a building

5. Which of the following is NOT a typical benefit of performance contracting from the building owner's perspective?

A) The energy-service company can have a financial incentive to achieve projected savings
B) Net cash flow can be neutral or positive for the owner
C) Maintenance services provided by the performance contractor can add value to the overall savings achieved
D) Performance contracting can provide access to external financing when the owner may not have sufficient equity for in-house financing for large projects
E) Performance contracting is a simple and quick process

Solutions: