AEP AEP Metering & Measurement 1 — Questions and Answers
Question 1: What is the primary purpose of an electric meter installed at a customer's service entrance?
- To control voltage levels
- To measure electrical energy consumption (Correct answer)
- To protect against power surges
- To regulate current flow
Correct answer: To measure electrical energy consumption
Electric meters measure the amount of electrical energy consumed by a customer for billing purposes.
Question 2: Which unit is used to measure electrical energy consumption on a standard residential meter?
- Amperes
- Volts
- Kilowatt-hours (kWh) (Correct answer)
- Watts
Correct answer: Kilowatt-hours (kWh)
Kilowatt-hours (kWh) is the standard unit used to measure electrical energy consumption for billing purposes.
Question 3: What does AMI stand for in the context of AEP's smart metering infrastructure?
- Automated Meter Integration
- Advanced Metering Infrastructure (Correct answer)
- Amplified Meter Interface
- Automatic Measurement Instrument
Correct answer: Advanced Metering Infrastructure
AMI (Advanced Metering Infrastructure) is the integrated system of smart meters, communications networks, and data management systems.
Question 4: What is the purpose of a current transformer (CT) used in metering applications?
- To increase voltage for transmission
- To reduce high currents to a lower, measurable value (Correct answer)
- To store electrical energy
- To convert AC to DC power
Correct answer: To reduce high currents to a lower, measurable value
Current transformers reduce high primary currents to a proportional lower secondary current suitable for measurement instruments.
Question 5: When installing a revenue-grade meter, what accuracy class is typically required by utilities like AEP?
- Class 10
- Class 5
- Class 0.5 or better (Correct answer)
- Class 2
Correct answer: Class 0.5 or better
Revenue-grade meters must meet accuracy Class 0.5 or better to ensure precise billing measurements as required by ANSI standards.
Question 6: What is a demand meter used for in commercial and industrial applications?
- To measure total energy consumption only
- To measure peak power demand over a specified interval (Correct answer)
- To detect power outages automatically
- To monitor power factor exclusively
Correct answer: To measure peak power demand over a specified interval
Demand meters record the maximum power demand (kW) over a set interval, typically 15 or 30 minutes, for demand charge billing.
AEP AEP Metering & Measurement 1
What is the primary purpose of an electric meter installed at a customer's service entrance?