AEE CEM valid study dumps : Certified Energy Manager (CEM)

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AEE CEM Exam Syllabus Topics:

AEE Certified Energy Manager (CEM) Sample Questions:

1. In a chilled water thermal energy storage system, chilled water is stored at 4°C and used for supply water.
Chilled water return is 14°C. Calculate the storage capacity required to hold 50 GJ of thermal cooling. (The specific heat of water (C) is 4.2 kJ/kg-°C. Assume no system losses.)

A) 1,356 m³
B) 2,618 m³
C) 1,191 m³
D) 4,180 m³
E) 766 m³

2. Thermal scans of electrical equipment are useful for:

A) Reading current carrying capacity of installed conductors
B) Locating areas of high power factor
C) Locating a loose electrical connection
D) Measuring the load on a refrigerant system

3. Which pump system listed below is most likely the best application for converting to variable-speed drive for energy savings?
SELECT THE CORRECT ANSWER

A) Reciprocating pump with on-off control, transferring liquid vertically for one hour per day
B) Positive displacement rotary lobe pumps in parallel, in a constant flow rebar quenching application with a static head of 80 m and negligible friction head
C) Piston pump operating at full capacity with throttle valve fully open, transferring liquid from an underground dam to the roof of a building
D) Centrifugal pump varying its flowrate with bypass control, circulating liquid in a closed loop cooling system

4. A new lighting system costs $60,000. The new lighting system has a 15-year life and the minimum required rate of return (MARR) is 15%. How much must the new lighting system save to be life-cycle cost effective?

A) $33,200/year
B) $12,556/year
C) $10,260/year
D) $15,650/year
E) $27,090/year

5. Which of the following instruments is most useful for tracking long-term boiler performance?

A) The exhaust stack temperature sensor
B) The boiler room ambient temperature sensor
C) The feedwater temperature sensor
D) The pressure gauge
E) The drum water level gauge

Solutions: