CEM Exam Guide
This CEM exam focuses on practical knowledge and exam application scenarios related to the subject area. It evaluates your ability to understand core concepts, apply best practices, and make informed decisions in realistic situations rather than relying solely on memorization.
This page provides a structured exam guide, including exam focus areas, skills measured, preparation recommendations, and practice questions with explanations to support effective learning.
Exam Overview
The CEM exam typically emphasizes how concepts are used in professional environments, testing both theoretical understanding and practical problem-solving skills.
Skills Measured
- Understanding of core concepts and terminology
- Ability to apply knowledge to practical scenarios
- Analysis and evaluation of solution options
- Identification of best practices and common use cases
Preparation Tips
Successful candidates combine conceptual understanding with hands-on practice. Reviewing measured skills and working through scenario-based questions is strongly recommended.
Practice Questions for CEM Exam
The following practice questions are designed to reinforce key CEM exam concepts and reflect common scenario-based decision points tested in the certification.
Question#1
Scenario: A facility installs a Variable Frequency Drive (VFD) on a 3-phase AC induction motor that possesses strictly 6 magnetic poles. The building automation system commands the VFD to permanently operate at exactly 48.0 Hz to satisfy the chilled water load. The energy manager must mathematically calculate the absolute theoretical synchronous speed of the rotating magnetic field at this exact frequency.
A. The calculated absolute theoretical synchronous speed of the field is exactly 1200.0 RP
B. The calculated absolute theoretical synchronous speed of the field is exactly 1440.0 RP
C. The calculated absolute theoretical synchronous speed of the field is exactly 0480.0 RP
D. The calculated absolute theoretical synchronous speed of the field is exactly 0960.0 RP
Explanation:
The synchronous speed of an AC motor's magnetic field is strictly dictated by the electrical frequency and the number of physical magnetic poles built into the stator.
Question#2
Scenario: A centralized chilled water plant utilizes a massive primary circulation pump. During peak summer load at exactly 60.0 Hz, a certified power analyzer confirms the VFD motor draws exactly 100.0 kW of electrical power. During the autumn shoulder season, the building automation system drastically reduces the pump speed. The power analyzer now registers a steady electrical draw of exactly 12.5 kW. Based on the Affinity Laws, calculate the new operational frequency.
A. The calculated exact VFD operational frequency is 15.0 Hz.
B. The calculated exact VFD operational frequency is 30.0 Hz.
C. The calculated exact VFD operational frequency is 20.0 Hz.
D. The calculated exact VFD operational frequency is 45.0 Hz.
Explanation:
This requires a reverse execution of the pump Affinity Laws. Power (kW) varies with the cube of the speed ratio
Disclaimer
This page is for educational and exam preparation reference only. It is not affiliated with AEE, Energy Management, or the official exam provider. Candidates should refer to official documentation and training for authoritative information.
