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AEE CEM Exam Syllabus Topics:

AEE Certified Energy Manager (CEM) Sample Questions:

1. 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

2. Exhaust gases from an industrial furnace flow through a heat-recovery steam generator, which generates medium-pressure steam. This steam is used in a steam turbine to generate shaft power driving a fan. Which type of combined heat and power (CHP) cycle does this process describe?

A) Combined cycle
B) Bottoming cycle
C) This cycle is not a combined heat and power system
D) Topping cycle

3. A 25-kW motor, at full load, drives a centrifugal fan that produces 160,000 liters per second (l/s) of ventilation air. If the fan speed is reduced to a flow rate of 150,000 l/s, what is the new load on the motor?

A) 30.3 kW
B) 20.6 kW
C) 15.2 kW
D) 25.0 kW
E) 24.2 kW

4. How much energy (kJ) is required to heat 2 kg of water from 25°C to 2 kg of water at 100°C? (The specific heat of water (C) is 4.2 kJ/kg-°C. Assume no system losses.)

A) 420 kJ
B) 630 kJ
C) 840 kJ
D) 510 kJ

5. Calculate the monthly electric bill for a customer that used 400 kW and 75,000 kwh during one month. Use the following declining block structure for a monthly bill:

SELECT THE CORRECT ANSWER

A) $9,660
B) $3,280
C) $7,850
D) $4, 580
E) $12,500

Solutions: