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AEE Certified Energy Manager (CEM) Sample Questions:

1. Why do electric utility companies transmit power at high voltages?
SELECT THE CORRECT ANSWER

A) Higher voltages are more stable
B) Higher voltages are safer
C) Transmission power losses (12R) are less
D) Electrical frequency is more stable

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

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

3. Which of the following is a closed-loop controller?

A) Manual dimmer for a light switch
B) Time clock schedule controller
C) Thermostat for an air conditioning unit
D) Accelerator pedal in an automobile

4. You can buy air compressor A for $15,000 or air compressor B for $6,000. Compressor A will cost $10,000 per year to operate. Compressor B will cost $11,500 per year to operate. If both air compressors have a 10- year life and your required return on investment is 12%, which air compressor has the lowest total life-cycle cost?

A) Compressor A
B) Compressor B
C) Both air compressors have the same life-cycle cost

5. What is the purpose of monitoring energy consumption?
SELECT THE CORRECT ANSWER

A) To support analysis of energy information
B) To establish when and why there is a deviation in energy consumption patterns
C) All of the above
D) To establish a basis of management control

Solutions: