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Updated: Sep 03, 2025
No. of Questions: 132 Questions & Answers with Testing Engine
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AEE Certified Energy Manager (CEM) Sample Questions:
1. A controlled valve is full closed when it gets a signal of 4 mA. The valve is full open when it gets a signal of
20 mA. With a control signal of 8 mA, what is the valve position?
A) 12.5% open
B) 45% open
C) 82% open
D) 75% open
E) 25% open
2. How does an enthalpy-based economizer control operate?
A) Using a constant mixed air proportion control sequence
B) Comparing the difference in dry-bulb air temperature measurements of the return air and the outdoor air
C) Using the dry-bulb temperature and relative humidity of both the outdoor-air and return-air
D) Measuring the outdoor air dry-bulb temperature and relative humidity
3. An air-conditioning system at full load is rated at 70-kW (thermal cooling) and has a coefficient of performance (COP) of 4.1. What is the electrical load at full load?
A) 17.1 kW
B) 70.0 kW
C) 23.3 kW
D) 35.0 kW
E) 46.7 kW
4. An energy-saving project costs $540,000. The project will have maintenance costs of $25,000 per year. The energy savings from the project are $160,000 per year. What is the simple payback of the project?
A) 4.0 years
B) 3.0 years
C) 5.0 years
D) 2.0 years
5. 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) 3.4%
B) 5.5%
C) 2.4%
D) 6.2%
E) 1.1%
Solutions:
| Question # 1 Answer: E | Question # 2 Answer: C | Question # 3 Answer: C | Question # 4 Answer: A | Question # 5 Answer: C |
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