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AEE Certified Energy Manager (CEM) Sample Questions:

1. In a performance contract, which group has the greatest investment risk?

A) The equipment manufacturer
B) Risk is shared by the terms in the performance contract
C) The energy-service company
D) The company installing the energy project

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

3. Which problems can be caused by poor power quality?

A) Circuit breakers tripping
B) Answers B and C
C) Equipment overheating
D) All of the above
E) Induction motors running backwards

4. A hot-water boiler has a cut-in set point of 65°C on the hot water supply temperature and a differential set point of 10°C. What is the hot-water supply temperature that causes the boiler to turn off?

A) 65°C
B) 75°C
C) 55°C
D) It depends on the return water temperature

5. A new energy-efficient boiler costs $60,890 to buy and install. The new energy-efficient boiler will save
$15,400 per year and last for 20 years. What is the internal rate of return (IRR) of the project?

A) 25%
B) 10%
C) 30%
D) 20%
E) 15%

Solutions: