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AEE Certified Energy Manager (CEM) Sample Questions:

1. For general indoor residential lighting applications, which light source can provide the most appropriate illumination with the highest efficacy?

A) Low-pressure sodium (LPS)
B) Mercury vapor (MV)
C) Compact fluorescent (CFL)
D) Incandescent
E) Light-emitting diode (LED)

2. An outdoor parking area has 25 light poles. Each pole has a 420 Watt (ballast included) high-pressure sodium (HPS) luminaire. The parking area lights are illuminated 4,500 hours per year and the electricity cost is $0.08
/kWh. What is the annual energy cost reduction if each luminaire is replaced with a 220-Watt (driver included) LED luminaire?

A) $2,600/yr
B) $1,200/yr
C) $2,200/yr
D) $1,500/yr
E) $1,800/yr

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

4. A facility replaces a natural gas heating system rated at 10,000 kJ/h and 80% efficiency with an electric heat pump rated at 10,000 kJ/h and a coefficient of performance (COP) of 2.3. Will this project also reduce the annual energy utilization index (EUI) for the facility?

A) Yes
B) No

5. Which of the following is NOT a renewable-energy resource?
SELECT THE CORRECT ANSWER

A) Ocean waves
B) Crop residue
C) Geothermal heat
D) Shale gas
E) Saw grass

Solutions: