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AEE Certified Energy Manager (CEM) Sample Questions:

1. What is the Energy Use index (EUl) for a 4,000 m2 building that uses the following amounts of energy each year?

A) 1,612,000 kJ/m²-yr
B) 3,220,800 kg/m²-yr
C) 403,311 kJ/m²-yr
D) 625,600 kJ/m²-yr
E) 855,250 kJ/m²-yr

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

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

3. A 7 bar (gauge pressure) compressed air system has 5 leaks that are 3 mm in diameter and 3 leaks that are 6 mm in diameter. The compressed-air system is pressurized 8,760 hours per year. Electricity cost is $0.10
/kWh. What is the annual cost of the leaks in the compressed air system?

A) $25,220/yr
B) $56,500/yr
C) $18,150/yr
D) $30,910/yr
E) $48,480/yr

4. What is the definition of lamp life for a fluorescent lamp?

A) The time at which 50% of a large sample of lamps have failed
B) The time at which lumen output has reduced to 70% of the initial light output
C) The time at which 70% of a large sample of lamps have failed
D) The time at which lamps begin to fail
E) The time at which lumen output has reduced by 50%

5. Which heat recovery device listed below can be used to preheat boiler make-up water using the heat energy from skimming blowdown?

A) Heat pipe
B) Regenerative recouperator
C) Desiccant heat wheel
D) Shell and tube heat exchanger

Solutions: