Metering

• A. Metering
• B. Protection
• C. Circuit Breaking
• D. Voltage Range

Answer: (A)

Metering is about measuring electrical quantities such as energy usage and related data that are needed for billing, monitoring, and analysis. In practice, meters record how much electricity a customer uses (often in kilowatt-hours) and may also capture demand, voltage, current, and power factor to support billing and system performance checks. This focus on measurement and data collection distinguishes it from the other areas: protection deals with detecting faults and triggering safety responses, circuit breaking is the action of opening a circuit to interrupt current during faults, and voltage range refers to the acceptable operating voltages rather than how usage is measured. So the best fit here is metering because it centers on the measurement and recording of electrical quantities.