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AEE Certified Energy Manager (CEM) Sample Questions:

1. Which of the following is NOT included in commissioning documentation?

A) As-built drawings
B) Equipment control sequence documentation
C) Original facility and equipment design intent
D) Equipment operations and maintenance manuals
E) Financing payment structure reports

2. A three phase, 380-volt system, has the following voltage measurements:
Va = 375 volts
Vb = 380 volts
Vc = 391 volts
Calculate the percent voltage imbalance.

A) 5.5%
B) 2.4%
C) 1.1%
D) 3.4%
E) 6.2%

3. How can you tell if steam traps in a steam distribution system may NOT be working correctly?

A) Rapid chattering of disk steam traps
B) An increase in make-up water requirements relative to steam demand
C) All of the above
D) No sound from inverted bucket steam traps
E) Robust flash steam rising from condensate receiver tank vent pipes

4. A piece of equipment costs $250,000 to buy and install. The annual operating cost for the equipment is
$50,000 per year. The equipment will last 15 years. After 15 years, the equipment will have no net salvage value. The annual interest rate is 10%. What is the present value of the life-cycle cost to own and operate the equipment? Use end-of-year annual cash flow analysis.

A) $756,113
B) $250,000
C) $556,945
D) $630,300

5. What is the best type of heat exchanger to recover and transfer latent heat energy from one air stream to another?

A) Ceramic recuperator
B) Shell and tube
C) Desiccant heat wheel
D) Heat pipe
E) Run-around system

Solutions: