AEE Certified Energy Manager (CEM) : CEM Exam

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AEE CEM Exam Syllabus Topics:

AEE Certified Energy Manager (CEM) Sample Questions:

Question 1

A heat pump water heater has an annual average coefficient of performance (COP) of 2.1 and heats water from 15°C to 50°C. Hot water use is 100 liters per day, 365 days/yr. The electricity cost is $0.10/kWh. What is the annual water heating cost? (The specific heat of water (C) is 4.2 kJ/kg-°C.)

A. $70.97/year
B. $44.88/year
C. $64.66/year
D. $52.20/year
E. $88.29/year

Question 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

Question 3

Some international electric utilities use 'net metering" for customers with renewable energy equipment, such as photovoltaic power panels. Which of the following best describes net metering with regard to excess power generation and utility billing practices?
SELECT THE CORRECT ANSWER

A. Accept excess electric energy generated by a customer's energy system, the value of which can offset the value of energy consumed by the customer over the net metering period
B. Transmit electric energy generated by a customer's energy system so that the customer may sell the excess electricity to another company on the transmission system
C. Accept excess electric energy generated by a customer's energy system but with no financial compensation for the energy fed into the utility's transmission system

Question 4

What instrument determines flow rate by measuring pressure differential?

A. Hot-wire anemometer
B. Psychrometer
C. Infrared camera
D. Ultrasonic flow meter
E. Pitot tube

Question 5

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. The project has a life of 10 years with no salvage value. The minimum attractive rate of return (MARR) is 10%. Using end-of-year cash flows, calculate the net- present value (NPV) of the project.

A. $311,556
B. $154,657
C. $289,575
D. $456,254

Solutions: