Energy Meter Basics

What are the different energy measurement techniques used in energy meters?

• Photoelectric sensor

• Piezoelectric crystal

• Electromagnetic induction, shunt resistor, Hall effect sensor, Rogowski coil

• Thermocouple

Name two types of energy meters commonly used.

• Analog Meters, Smart Meters

• Mechanical Meters, Wireless Meters

• Static Meters, Dynamic Meters

• Analog Energy Meters, Digital Energy Meters

Explain the working principle of an energy meter.

• The working principle of an energy meter is based on electromagnetic induction, where the rotation of an aluminum disc in a magnetic field is used to measure the amount of electrical energy consumed.

• Energy meters work by measuring the temperature of the electrical wires

• Energy meters function by counting the number of electrical outlets in a building

• Energy meters operate based on the gravitational pull of the Earth

How is an energy meter constructed?

• An energy meter is constructed using a current transformer, voltage transformer, and a measuring element such as an electromagnetic or electronic sensor.

• An energy meter is constructed using only a voltage transformer.

• An energy meter is constructed using a thermometer, barometer, and hygrometer.

• An energy meter is constructed using a wind turbine, solar panel, and battery.

What is the purpose of a shunt in an energy meter?

• To decrease current without affecting voltage

• To increase voltage without affecting current

• To measure voltage without affecting current

• To measure current without affecting voltage

Describe the role of the potential coil in an energy meter.

• The potential coil measures the current in the circuit.

• The potential coil determines the resistance of the circuit.

• The potential coil regulates the power consumption.

• The potential coil measures the voltage in the circuit.

What are the components of an electromagnetic energy meter?

• resistor coil, voltage coil, rotating copper disc, permanent magnet, register

• current coil, voltage coil, rotating aluminum disc, permanent magnet, register

• current coil, voltage coil, rotating steel disc, permanent magnet, display

• current coil, voltage coil, rotating aluminum disc, electromagnet, register

How does an electronic energy meter differ from an electromechanical energy meter?

• Electromechanical energy meters use electronic components and digital displays.

• Electronic energy meters use mechanical components and analog displays.

• Electronic energy meters use electronic components and digital displays, while electromechanical energy meters use mechanical components and analog displays.

• Electronic energy meters measure water consumption, while electromechanical energy meters measure electricity consumption.