AEE CEM : Certified Energy Manager (CEM)

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AEE Certified Energy Manager (CEM) Sample Questions:

1. A controller has a signal output that can range from 4 to 20 mA (milli-amperes). The controller regulates the output temperature from a three-way mixing valve from 5°C to 15°C. What is the control gain?

A) 1.4
B) 0.8
C) 1.2
D) 1.6
E) 0.6

2. A 100-kW packaged engine-generator combined heat and power (CHP) system has the specifications listed below. What is the annual purchased fuel cost for the CHP system, assuming that the CHP is electrical output limited and operates at full electrical load all year?

SELECT THE CORRECT ANSWER

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

3. What is a common cause of poor power quality?

A) Electronic equipment, such as personal computers
B) Synchronous motors
C) Partially loaded induction motors
D) Natural gas turbine power generation by utilities
E) Incandescent lighting

4. A high-pressure steam system passes 180°C condensate (saturated liquid) through a steam trap to an atmospherically vented condensate receiver tank. If the steam trap is working properly, how much of the condensate mass can be lost out the vent of the receiver tank in the form of flash steam?

A) 6%
B) 25%
C) 15%
D) 66%
E) 100%

5. Which of the following is the primary benefit of integrating energy management with a Building Automation System (BAS) in a commercial facility?
SELECT THE CORRECT ANSWER

A) Increased energy efficiency by enabling real-time monitoring and automated adjustments to HVAC, lighting, and other systems
B) Reduced initial installation costs compared to traditional control systems
C) Simplified maintenance by eliminating the need for system diagnostics and fault detection
D) Enhanced tenant satisfaction through manual lighting control in individual zones

Solutions: