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Energy Meter Question & Answers

March 13, 2023 By Wat Electrical

This article lists 50 Energy Meter MCQs for engineering students. All the Energy Meter Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of the Energy Meter.

An energy meter, also known as an electricity meter or watt-hour meter, is a device used to measure the amount of electrical energy consumed in a residential, commercial, or industrial setting. It typically measures the flow of electrical energy in kilowatt-hours (kWh) and is used by utilities to bill customers for their energy usage. 

Energy meters come in various types and designs, but they all function by measuring the amount of electricity passing through them. Some energy meters use mechanical dials or wheels to display energy usage, while others use digital displays. Smart energy meters can communicate with utility companies remotely to provide real-time energy usage data. 

Energy meters are an essential component of the electrical grid infrastructure and are used to monitor energy usage and ensure that the supply of electricity matches the demand. They also help to promote energy conservation and efficiency by providing customers with information about their energy consumption and encouraging them to make changes to reduce their energy usage. 

The electronic energy meter uses a microcontroller and electronic circuits to measure energy consumption and it has a power supply & higher accuracy. These energy meters have no moving parts, resulting in a long life span, and they can measure both reactive and active energy consumption. 

1). Which one of the following energy meters uses a spinning disk to measure energy consumption?

Hint
2). Which one of the following energy meters can handle high current and voltage levels?

Hint
3). How many electromagnets does driving system consists of?

Hint
4). The voltage range of single-phase energy meter is ________________?

Hint
5). What is the standard form of SEM?

Hint
6). Who discovered electrolytic meter and which year the meter is discovered?

Hint
7). The electromagnetic induction is a principle of _________________ energy meter?


Hint
8). Which one of the following electricity meters used in polyphase AC power distribution systems?

Hint
9). The figure shown below is a circuit diagram of __________________ energy meter?

Smart Energy Meter

Hint
10). What are the features of single-phase energy meter?

Hint
11). The E=P*t is a formula of _________________ parameter?

Hint
12). Which one of the following meters primarily used in commercial or industrial buildings?

Hint
13). Which one of the following meters primarily used in residential settings?

Hint
14). Which one of the following electricity meters used in single phase AC power systems?

Hint
15). _______________ are the errors in induction type energy meter?

Hint
16). Who discovered pendulum meter and which year the meter is discovered?

Hint
17). The electronic measurement is a principle of _________________ energy meter?

Hint
18). Which one of the following electricity meters used in DC power distribution systems?

Hint
19). The figure shown below is a block diagram of __________________ energy meter?

Digital Energy Meter

Hint
20). Which one of the following energy meters uses digital technology to measure energy consumption?

Hint

Energy Meter MCQ for Exams

21). Which one of the following energy meters may be affected by external factors such as temperature and vibration?

Hint
22). The voltage range of three-phase energy meter is ________________?

Hint
23). Which one of the following electricity meters used in high power circuits?

Hint
24). The PF=P/S is a formula of _________________ parameter?

Hint
25). Which one of the following energy meters uses digital technology and can communicate with the utility company?

Hint
26). Who discovered recording wattmeter and which year the meter is discovered?

Hint
27). The electronic measurement, wireless communication is the principle of _________________ energy meter?

Hint
28). The westing house type ALF is an example of _______________ energy meter?

Hint
29). The figure shown below is a circuit diagram of __________________ energy meter?

Circuit Diagram of Analog Energy Meter

Hint
30). Which one of the following energy meters allows consumers to pay for energy in advance?

Hint
31). Which one of the following electricity meters used in low power circuits?

Hint
32). The S=V*I is a formula of _________________ parameter?

Hint
33). Which one of the following meters installed at the source of heating or cooling system?

Hint
34). Which one of the following meters installed at the entry point of electricity, gas, or water supply?

Hint
Read more about Tachometer 
35). Which one of the following energy meters charges different rates for energy consumption based on the time of day?

Hint
36). The current rating of single-phase energy meter is ________________?

Hint
37). Who discovered AC Watthour and which year the meter is discovered?

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38). The elster A100C is an example of _______________ energy meter?

Hint
39). The figure shown below is a diagram of __________________ energy meter?

Moving Disk Energy Meter

Hint
40). Which one of the following energy meters can measure both active and reactive energy consumption?

Hint

Energy Meter MCQ for Quiz

41). Who discovered Meter Trivector and which year the meter is discovered?

Hint
42). The P=V*I*PF is a formula of _________________ parameter?

Hint
43). Which one of the following meter measures heating or cooling energy consumed in buildings?

Hint
44). Which one of the following meter measures electricity, gas or water consumption?

Hint
45). Which one of the following energy meters has moving parts, which can wear out over time and affect accuracy?

Hint
46). The Q=sqrt(S^2-P^2) is a formula of _________________ parameter?

Hint
47). Which one of the following electricity meters used in laboratories and research?

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48). Who discovered Meter Blathy and which year the meter is discovered?

Hint
49). The current rating of three-phase energy meter is ________________?

Hint
50). Which one of the following energy meters has slower response time?

Hint

For More MCQs

  • Q Meter Question & Answers
  • Tachometer Questions & Answers
  • Anemometer Questions & Answers 
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