Secure Meters Supervisor Interview Questions and Answers

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Q1. Which insulation is necessary for proper function and basic protection?
Ans. 
Thermal insulation is necessary for proper function and basic protection.
• Thermal insulation helps regulate temperature and prevent heat loss or gain.

• Common types of insulation include fiberglass, foam, and cellulose.

• Insulation is used in buildings, vehicles, and various industrial applications.

• Examples of insulation materials include fiberglass batts, spray foam, and mineral wool.

• Proper insulation improves energy effic
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Q2. What is the expansion ECC?
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ECC stands for Error Correction Code, which is a method used to detect and correct errors in data transmission.
• ECC is commonly used in computer memory and storage devices to ensure data integrity.

• It works by adding extra bits to the data being transmitted, which can be used to detect and correct errors.

• There are different types of ECC, such as Single Error Correction Double Error Detection (SECDED) and Triple Error Cor
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Q3. Which type MCBs suitable for halogen lamps?
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Type B MCBs are suitable for halogen lamps.
• Type B MCBs have a characteristic curve that allows for a short-term surge in current, which is common in halogen lamps.

• Type C and D MCBs may trip too quickly and cause nuisance tripping.

• It is important to check the wattage and voltage of the halogen lamp to ensure the correct MCB is selected.

• Examples of Type B MCBs include Schneider Electric Acti 9 iK60N and ABB S 200 series.
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What is the square root of 0.017?

Q1. What is the megger reading in a dead short wiring installation?
Ans. 
A dead short wiring installation will have a megger reading of zero.
• A dead short is a complete circuit with no resistance.

• A megger is used to measure insulation resistance.

• In a dead short, there is no insulation resistance to measure.

• Therefore, the megger reading will be zero.
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Q1. Difference between 1 phase & 3 phase energy meter
Ans. 
1 phase energy meter measures power in single phase while 3 phase energy meter measures power in three phases.
• 1 phase energy meter is used for single phase loads like homes, small offices, etc.

• 3 phase energy meter is used for three phase loads like industrial motors, large factories, etc.

• 1 phase energy meter has two wires while 3 phase energy meter has four wires.

• 1 phase energy meter measures voltage, current, power fa...read more
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Q2. What is the difference smart meter..
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Smart meters are advanced energy meters that record energy consumption in real-time and communicate it to the utility company.
• Smart meters provide real-time energy consumption data to both the consumer and the utility company.

• They can communicate wirelessly or through power lines.

• Smart meters can help consumers save money by providing information on energy usage patterns.

• They can also help utilities manage energy distr...read more
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Q4. What is Difference between ct meter & dt meter...
Ans. 
CT meter measures current while DT meter measures energy consumption.
• CT meter measures the current flowing through a circuit while DT meter measures the energy consumption of a circuit over a period of time.

• CT meter is used for protection and control purposes while DT meter is used for billing and energy management purposes.

• CT meter is used in high voltage applications while DT meter is used in low voltage applications...read more
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Q5. What is the SLD
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SLD stands for Single Line Diagram, a graphical representation of an electrical system.
• It shows the flow of electricity in a system

• It includes all the components of the system such as transformers, generators, breakers, etc.

• It is used by engineers to design and analyze electrical systems

• It is also used for maintenance and troubleshooting purposes

• Example: SLD of a power plant or a building's electrical system
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