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AEE Certified Energy Manager (CEM) Sample Questions:
1. A compressed air system has a total volume of 247,500 liters. During a 30-minute break in production (air compressor system turned off and no production demand for compressed air), the system pressure drops from
7 bar, gauge (700 kPa, gauge) to 5 bar, gauge (500 kPa, gauge). Calculate the leakage rate in the compressed air system.
A) 16,500 liters/minute
B) 32,000 liters/minute
C) 48,250 liters/minute
D) 8,250 liters/minute
E) 22,750 liters/minute
2. Periodic commissioning of a building automation system (BAS) might include which of the following?
A) All of the above
B) Removing temperature set point overrides
C) Verify controls are still responsive to the BAS
D) Retraining staff on the BAS functions and programming
E) Answers A and C
3. What is the purpose of monitoring energy consumption?
SELECT THE CORRECT ANSWER
A) All of the above
B) To establish when and why there is a deviation in energy consumption patterns
C) To establish a basis of management control
D) To support analysis of energy information
4. An air-conditioning unit delivers 10,000 kJ/h (thermal cooling). The equipment uses single-phase electrical power at 220-volt and 5.25 amps with a power factor of 100%. Calculate the coefficient of performance (COP).
A) 6.2
B) 16.1
C) 2.4
D) 13.2
E) 3.2
5. Which is the best application for variable-speed drives?
A) Reciprocating air compressor
B) Centrifugal fan motor in a variable-air volume air-conditioning system
C) Centrifugal fan motor in a multi-zone air conditioning system
D) Waste-water sewer lift pump
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: A | Question # 3 Answer: A | Question # 4 Answer: E | Question # 5 Answer: B |
By Joyce
