Concepts and Principles Flashcards
7 cards from real CEM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Concepts and Principles flashcards as text
What does the term 'demand charge' refer to on a commercial electricity bill?
Answer: A fee based on the peak power demand during the billing period
Demand charges are billed based on the highest 15- or 30-minute average power draw (kW) recorded during the billing period.
In energy management, what is 'baseload'?
Answer: The minimum level of energy consumption maintained continuously
Baseload is the minimum power requirement a facility maintains around the clock, representing constant, uninterruptible energy use.
Which metric best describes how effectively a facility converts input energy into useful output?
Answer: Energy efficiency
Energy efficiency is the ratio of useful energy output to total energy input, indicating how well energy is converted to productive work.
What is the primary purpose of a Measurement & Verification (M&V) plan in an energy project?
Answer: To document and verify energy savings achieved after implementation
An M&V plan establishes the methodology for measuring actual energy performance and verifying that projected savings are realized.
The International Performance Measurement and Verification Protocol (IPMVP) Option A is best described as:
Answer: Key parameter measurement with stipulation of other parameters
IPMVP Option A measures key performance parameters while stipulating (assuming) values for less significant parameters to reduce measurement cost.
Which of the following best defines 'energy conservation' as distinct from 'energy efficiency'?
Answer: Reducing energy use by modifying behavior or curtailing services
Energy conservation involves reducing consumption by changing behavior or accepting reduced service levels, whereas efficiency delivers the same service with less energy.
What is 'specific energy consumption' (SEC) used to measure in industrial energy management?
Answer: Energy used per unit of production output
SEC normalizes energy consumption against production volume, allowing fair comparison of efficiency across different output levels.