Online Access Free CEM Exam Questions

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

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

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.25.0 kW
• C.15.2 kW
• D.24.2 kW
• E.20.6 kW

Which of the following is NOT a renewable-energy resource?
SELECT THE CORRECT ANSWER

• A.Geothermal heat
• B.Crop residue
• C.Shale gas
• D.Saw grass
• E.Ocean waves

A 50-Hz alternating current (AC) induction motor has 3 pole pairs (6 poles). What is the synchronous speed of the motor?

• A.600 rpm
• B.1,000 rpm
• C.750 rpm
• D.1,500 rpm