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AEE Certified Energy Manager (CEM) Sample Questions:

1. 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) 46.7 kW
D) 23.3 kW
E) 35.0 kW

2. What type of heat transfer is reduced by adding insulation to the inside surface of a wall?

A) Conduction
B) Convection
C) Radiation

3. Problems Caused by Harmonic Distortion
Which of the following problems is unlikely to be caused by harmonic distortion?
SELECT THE CORRECT ANSWER

A) Circulating currents in motor shafts
B) Torque pulsation in motors
C) Degraded power factor C. Lighting "flicker"
D) "Nuisance" tripping of circuit breakers

4. Problems Caused by Harmonic Distortion
Which of the following problems is unlikely to be caused by harmonic distortion?
SELECT THE CORRECT ANSWER

A) Circulating currents in motor shafts
B) Torque pulsation in motors
C) Degraded power factor C. Lighting "flicker"
D) "Nuisance" tripping of circuit breakers

5. If the initial design process includes group relamping, how can this reduce the number of lamps required to illuminate a space?

A) Group relamping cannot reduce the number of lamps required to illuminate a space
B) Group relamping reduces the overall amount of lamp breakages, which means fewer lamps are required to illuminate a space.
C) Group relamping reduces factors that contribute to light loss, which means fewer lamps are required to illuminate a space
D) Group relamping improves the room cavity ratio, which means fewer lamps are required to illuminate a space
E) Group relamping requires using larger Wattage lamps, which means fewer lamps are required to illuminate a space

Solutions: