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AEE CEM Exam Syllabus Topics:

AEE Certified Energy Manager (CEM) Sample Questions:

1. The primary advantage of predictive maintenance over preventive maintenance in building energy systems, is that predictive maintenance:
SELECT THE CORRECT ANSWER

A) Eliminates the need for regular inspections, reducing operational costs (Note: This option is selected in the image)
B) Uses real-time data and analytics to identify potential failures before they occur, minimizing unexpected outages
C) Focuses exclusively on energy savings by optimizing system set points
D) Schedules routine checks at fixed intervals to reduce downtime

2. An energy project implemented today saves $10,000 per year for the next 20 years. Using the 5% interest table, determine the total value of savings at the end of the 20th year?

A) $496,991
B) $200,000
C) $146,907
D) $124,620
E) $330,660

3. A facility has the thermal cooling load profile shown in the table below. The utility rate traffic has an no-peak time-of-use period that begins at 10:00 a.m ends at 7:00 p.m. What chiller capacity (output) is required for a load-leveling operating strategy?

[Question from the previous image, which was about chiller capacity for load leveling, but the table was missing]

A) 5.0 GJ/h
B) 7.0 GJ/h
C) 8.0 GJ/h
D) 4.0 GJ/h

4. A 1OO-kW packaged engine-generate combined heat and power (CHP) system has the specifications listed below. The CHP equipment operates fully loaded for 8.000 h/yr. What is the annual fuel cost for the ChP equipment?
CMP equipment specifications: Electrical output 100kw Electrical efficiency: 25% Thermal recovery efficiency: 50*6 Total CMP efficiency: 75% Additional information: Fuel cost: S3.S0/GJ Electricity cost S0.06/kWh Previous water heating efficiency:
8046 Mot water usage: 75,700 liters/day (21 *C temperature rise)
[The question from the previous image, which was about calculating the annual cost of heat loss through a wall, but had a discrepancy between the calculated cost and the provided answer choices]

A) $43,776/yr
B) $58,300/yr
C) $32,668/yr
D) $52,222/yr
E) $28,900/yr

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

Solutions: