Certified Energy Manager Exam Flashcard Study System Cem Test Practice Questions Review For The Certified Energy Manager Exam Cards May 2026

Isolated retrofit, stipulated assumption for unmeasured factors. Option B: All parameters measured. Card 8 – Front True or False: Power factor correction capacitors reduce kW demand charges. Card 8 – Back A: False. Capacitors reduce kvar , thus lowering kVA (apparent power), which may reduce kVA demand charges , but not kW demand. kW is real power, unchanged by capacitors.

Note: May produce multiple values for non-conventional cash flows. Which ASHRAE Standard defines energy baseline and modeling for commercial buildings? Card 12 – Back A: ASHRAE Standard 90.1 (Energy Standard for Buildings Except Low-Rise Residential) — particularly Appendix G for Performance Rating Method. Card 8 – Back A: False

Exception: Reduced I²R losses in cables can slightly lower kW — usually negligible. Define: Degree-Day method for estimating heating energy. Card 9 – Back A: Heating Energy (MMBtu) = (HDD × UA × 24 hr/day) / (System Efficiency × 10^6) Note: May produce multiple values for non-conventional cash

Note: Power factor (0.85) not needed for kW calculation — only for kVA. Term: Chilled Water Reset Card 4 – Back A: A control strategy that increases chilled water supply temperature as cooling load decreases (e.g., from 44°F to 50°F at part load). thus lowering kVA (apparent power)

= (200 × 0.75 × 0.746) / 0.90 = (111.9) / 0.90 =

Also relevant for CEM: ASHRAE/IESNA 100 (Existing Buildings), ASHRAE 62.1 (Ventilation). Practice Question: A plant has annual energy cost $2,000,000. A project saves 8% with a $250,000 cost. What is the ROI first year? Card 13 – Back A: ROI = (Annual Savings / Project Cost) × 100