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? Electromechanical energy meter Electronic energy meter Smart energy meter Prepaid energy meter None Hint 2). Which one of the following energy meters can handle high current and voltage levels? Electromechanical induction type energy meter Electronic energy meter Both a and b None of the above None Hint 3). How many electromagnets does driving system consists of? Two Four Six Eight None Hint 4). The voltage range of single-phase energy meter is ________________? 110 V – 640 V 110 V – 440 V 110 V – 240 V 110 V – 540 V None Hint 5). What is the standard form of SEM? Single Energy Meter Synchronous Energy Motor Switched Energy Motor Switched Energy Meter None Hint 6). Who discovered electrolytic meter and which year the meter is discovered? Herman Aron Thomas Alva Edison Elihu Thomson Ludwig Gutmann None Hint 7). The electromagnetic induction is a principle of _________________ energy meter? Electromechanical induction type energy meter Electronic energy meter Smart energy meter Prepaid energy meter None Hint 8). Which one of the following electricity meters used in polyphase AC power distribution systems? Single phase induction motor Commutator meter Mercury meter Polyphase watt hour meter None Hint 9). The figure shown below is a circuit diagram of __________________ energy meter? Moving disk energy meter Analog energy meter Digital energy meter Smart energy meter None Hint 10). What are the features of single-phase energy meter? Accurate characteristics Higher torque weight ratio Lower friction All of the above None Hint 11). The E=P*t is a formula of _________________ parameter? Power factor Energy consumption Apparent power Real power None Hint 12). Which one of the following meters primarily used in commercial or industrial buildings? BTU meter Prepaid meter Anemometer meter Smart meter None Hint 13). Which one of the following meters primarily used in residential settings? BTU meter Prepaid meter Anemometer meter Smart meter None Hint 14). Which one of the following electricity meters used in single phase AC power systems? Single phase induction motor Commutator meter Mercury meter DC watt hour meter None Hint 15). _______________ are the errors in induction type energy meter? Phase angle error Error due to friction at light loads Creeping error All of the above None Hint 16). Who discovered pendulum meter and which year the meter is discovered? Herman Aron Thomas Alva Edison Elihu Thomson Ludwig Gutmann None Hint 17). The electronic measurement is a principle of _________________ energy meter? Electromechanical induction type energy meter Electronic energy meter Smart energy meter Prepaid energy meter None Hint 18). Which one of the following electricity meters used in DC power distribution systems? Electrolytic meter Commutator meter Mercury meter DC watt hour meter None Hint 19). The figure shown below is a block diagram of __________________ energy meter? Moving disk energy meter Analog energy meter Digital energy meter Smart energy meter None Hint 20). Which one of the following energy meters uses digital technology to measure energy consumption? Electromechanical energy meter Electronic energy meter Smart energy meter Prepaid energy meter None 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? Electromechanical induction type energy meter Electronic energy meter Both a and b None of the above None Hint 22). The voltage range of three-phase energy meter is ________________? 110 V – 640 V 208 V – 480 V 110 V – 240 V 110 V – 540 V None Hint 23). Which one of the following electricity meters used in high power circuits? Electrolytic meter Commutator meter Mercury meter DC watt hour meter None Hint 24). The PF=P/S is a formula of _________________ parameter? Power factor Energy consumption Apparent power Real power None Hint 25). Which one of the following energy meters uses digital technology and can communicate with the utility company? Electromechanical energy meter Electronic energy meter Smart energy meter Prepaid energy meter None Hint 26). Who discovered recording wattmeter and which year the meter is discovered? Herman Aron Thomas Alva Edison Elihu Thomson Ludwig Gutmann None Hint 27). The electronic measurement, wireless communication is the principle of _________________ energy meter? Electromechanical induction type energy meter Electronic energy meter Smart energy meter Prepaid energy meter None Hint 28). The westing house type ALF is an example of _______________ energy meter? Electromechanical induction Electronic energy meter Smart energy meter Prepaid energy meter None Hint 29). The figure shown below is a circuit diagram of __________________ energy meter? Moving disk energy meter Analog energy meter Digital energy meter Smart energy meter None Hint 30). Which one of the following energy meters allows consumers to pay for energy in advance? Electromechanical energy meter Electronic energy meter Smart energy meter Prepaid energy meter None Hint 31). Which one of the following electricity meters used in low power circuits? Electrolytic meter Commutator meter Mercury meter DC watt hour meter None Hint 32). The S=V*I is a formula of _________________ parameter? Power factor Energy consumption Apparent power Real power None Hint 33). Which one of the following meters installed at the source of heating or cooling system? BTU meter Prepaid meter Smart meter Anemometer None Hint 34). Which one of the following meters installed at the entry point of electricity, gas, or water supply? BTU meter Prepaid meter Smart meter Tachometer None 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? Electromechanical energy meter Electronic energy meter Smart energy meter Time of use energy meter None Hint 36). The current rating of single-phase energy meter is ________________? Up to 200 A Up to 1000 A Up to 2000 A Up to 500 A None Hint 37). Who discovered AC Watthour and which year the meter is discovered? Herman Aron Thomas Alva Edison Elihu Thomson Ludwig Gutmann None Hint 38). The elster A100C is an example of _______________ energy meter? Electromechanical induction Electronic energy meter Smart energy meter Prepaid energy meter None Hint 39). The figure shown below is a diagram of __________________ energy meter? Moving disk energy meter Analog energy meter Digital energy meter Smart energy meter None Hint 40). Which one of the following energy meters can measure both active and reactive energy consumption? Electromechanical energy meter Electronic energy meter Both a and b None of the above None Hint Energy Meter MCQ for Quiz 41). Who discovered Meter Trivector and which year the meter is discovered? Herman Aron Landis and Gyr Elihu Thomson Otto Titusz Blathy None Hint 42). The P=V*I*PF is a formula of _________________ parameter? Power factor Energy consumption Apparent power Real power None Hint 43). Which one of the following meter measures heating or cooling energy consumed in buildings? BTU meter Prepaid meter Smart meter Anemometer None Hint 44). Which one of the following meter measures electricity, gas or water consumption? BTU meter Prepaid meter Smart meter Anemometer None Hint 45). Which one of the following energy meters has moving parts, which can wear out over time and affect accuracy? Electromechanical induction energy meter Electronic energy meter Conventional energy meter Smart energy meter None Hint 46). The Q=sqrt(S^2-P^2) is a formula of _________________ parameter? Reactive power Energy consumption Apparent power Real power None Hint 47). Which one of the following electricity meters used in laboratories and research? Electrolytic meter Commutator meter Mercury meter DC watt hour meter None Hint 48). Who discovered Meter Blathy and which year the meter is discovered? Herman Aron Thomas Alva Edison Elihu Thomson Otto Titusz Blathy None Hint 49). The current rating of three-phase energy meter is ________________? Up to 200 A Up to 1000 A Up to 2000 A Up to 500 A None Hint 50). Which one of the following energy meters has slower response time? Electromechanical induction energy meter Electronic energy meter Conventional energy meter Smart energy meter None Hint For More MCQs Q Meter Question & Answers Tachometer Questions & Answers Anemometer Questions & Answers Time's up
