Domestic Electric Circuits.pdf
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This document summarizes domestic electric circuits. It explains that electrical energy is generated at power plants and transmitted through wires to homes. Inside homes, wires transmit live and neutral currents at 220 volts. These circuits have color coding and a ground wire for safety. Homes have lighting and power circuits with different amperage ratings. Overloading and short circuits pose hazards if appliances draw too much current or live and neutral wires touch. Fuses and circuit breakers prevent overloading and short circuits.
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KSRM COLLEGE OF ENGINEERING ,KADAPA.
_________________________
ELECTRIACAL WIRING IN DOMESTIC AND INDUSTRIES
Contents :
Introduction
1.Electrical power supply wiring.
2.Domestic electric circuits.
3.Domestic wiring .
4.Sub-circuits in domestic wiring.
5.Methods of wiring.
6.Industrial Electrification .
7.Types of installation.
8.Electrical installation for power circuits.
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1.Electric power is usually generated at places which are far away from the places where it is consumed . At the generating station, the electric power is generated at 11KV volts . This voltage alternates at a frequency of 50HZ.
2.The power is transmitted over a long distance at high voltages to minimize the loss of energy in the transmission.
3.The electric power line enter our house through three wires -namely the live wire, the neutral wire and the earth wire.
4.To avoid confusion we follow a colour code for insulating these wires.
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1.The live wire has a high potential of 220V whereas the neutral wire has zero potential .Thus the potential difference between the live wire and the neutral wire is 220-0=220V.
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2. Permanent magnet moving coil (PMMC) instruments have a coil mounted between magnet poles that deflects proportional to current. They are used as ammeters, voltmeters, and galvanometers. As an ammeter, the coil is connected across a low resistance shunt; as a voltmeter, it is connected in series with a high resistance.
3. Moving iron instruments can measure AC using an iron core acted on by a coil
Electricity lesson
Electricity is the flow of electrons. Static electricity occurs when there is a buildup of electrons on an object without a discharge path, such as through friction. Current electricity requires a closed circuit or conductive path for electrons to flow from a power source through a load. Circuits can be in series, with one conductive path, or parallel with multiple paths. Conductors allow electron flow while insulators do not. Switches open or close circuits to control electron flow.
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The fuse protects electric circuits from excessive current by containing a wire that melts when overheated. There are two main types: replaceable wire fuses and cartridge fuses. The fuse rating indicates the maximum current it can withstand without melting. Fuses should be rated slightly higher than the appliance's normal current to prevent tripping during regular use. Earth wires connect appliances to ground and provide a path for current in case of a loose live wire, preventing electric shocks.
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- In conductors like metals, loosely bound electrons can move freely and produce electric current when a potential difference is applied across the conductor by a battery. These free electrons drift in the direction of the electric field.
- Current is defined as the rate of flow of electric charge. It is measured in amperes, which is the amount of charge (in coulombs) passing through an area in one second. Current is a scalar quantity while current density is a vector quantity.
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Domestic electrical systems provide a core source of energy in modern societies. Electricity is generated through converting mechanical energy to electrical energy in generators, then distributed through high-voltage power lines to minimize energy loss. In homes, electricity is delivered through ring main wiring systems at 240 volts and 50 Hertz, with safety features like fuses, circuit breakers, and grounding to prevent electric shocks.
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An electrical conductor is a material that allows the flow of electric current. Most metals are good electrical conductors as their atomic structure allows electrons to move freely between atoms when a potential difference is applied. Conductors are classified into different types including plasma, semiconductors, and resistors, with plasma being the best conductor and resistors making electric current flow most difficult. Conductors are contrasted with insulators, which do not allow the passage of electricity. Common good electrical conductors include silver, copper, and aluminum, while materials like rubber, glass, and dry paper are typical electrical insulators.
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An electric generator converts mechanical energy into electrical energy using the principles of electromagnetic induction. It consists of a conductor that rotates inside a magnetic field, inducing currents to flow. As the conductor rotates, the direction of current changes, producing alternating current. For direct current, the generator has a separate metal slip ring and brushes attached to each end of the coil to allow current to flow in only one direction through the external circuit. Most power stations generate alternating current because it can be transmitted over long distances with little energy loss.
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The document discusses electrical circuits and Ohm's Law. It defines key concepts like voltage, current, resistance and their relationships. Voltage is measured in volts and is the "push" that drives current through a circuit. Current is measured in amps and is the flow of electrons. Resistance opposes the flow of current. Ohm's Law states that current is directly proportional to voltage and inversely proportional to resistance. Circuits can be connected in series or parallel, affecting how current and voltage are distributed.
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1. It introduces electromagnetism and discusses its importance in electrical devices.
2. It reviews the history of discoveries in electromagnetism and Maxwell's unification of electricity and magnetism.
3. It explains electromagnetic concepts such as the magnetic field produced by electric current, Faraday's laws of induction, and induced electromotive force.
4. It also discusses magnetic effects such as the direction
Transformer
Transformers are static devices that change alternating current (AC) voltages from one level to another through magnetic induction. They consist of two coils wrapped around an iron core, and work by electromagnetic induction. Transformers can step voltages up or down, depending on the number of turns in the primary and secondary coils. Common applications of transformers include power transmission, electronics coupling, and providing different voltages for loads.
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The wiring is important to every industries and domestic.And how the electrical power comes from transmission line to meter board to our domestic switch board ,switches etc.Here we explain the contents of the domestic wiring and industrial electrification etc.
below shows related documents.
KSRM COLLEGE OF ENGINEERING ,KADAPA.
_________________________
ELECTRIACAL WIRING IN DOMESTIC AND INDUSTRIES
Contents :
Introduction
1.Electrical power supply wiring.
2.Domestic electric circuits.
3.Domestic wiring .
4.Sub-circuits in domestic wiring.
5.Methods of wiring.
6.Industrial Electrification .
7.Types of installation.
8.Electrical installation for power circuits.
INTRODUCTION :
Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets and light fittings in a structure. Wiring is subjected to safety standards for design and installation. Allowable wire and cable types and sixes are specified according to the circuit operating voltage and electric current capability, with further restriction on environmental conditions ,such as ambient temperature range, moisture levels, and exposure to sunlight and chemicals .
Associated circuit protection, control and distribution devices within a building’s wiring system are subject to voltage, current and functional specification. It is necessary to select proper type of wiring scheme for the domestic purpose. Thus a network of wires connecting various accessories for distribution of electrical energy from the supplier meter board to the numerous electrical energy consuming devices through controlling and safety devices is known as Electrical wiring.
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Fig(1):Electrical power transmission from electric pole to energy meter to distribution board
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1.Electric power is usually generated at places which are far away from the places where it is consumed . At the generating station, the electric power is generated at 11KV volts . This voltage alternates at a frequency of 50HZ.
2.The power is transmitted over a long distance at high voltages to minimize the loss of energy in the transmission.
3.The electric power line enter our house through three wires -namely the live wire, the neutral wire and the earth wire.
4.To avoid confusion we follow a colour code for insulating these wires.
5.The ted wire is the live wire, and the black wire is neutral, the earth wire is given green plastic insulation.
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1.The live wire has a high potential of 220V whereas the neutral wire has zero potential .Thus the potential difference between the live wire and the neutral wire is 220-0=220V.
2.The earth wire is much thicker in size and is made of copper. One end of it is connected to a copper plate buried deep under the earth. The earth connection is made to the electric meter and then the main switch.
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Building electric circuit
Hoping to help for your research, assignments or other paper-works about building electric circuit. Thank you.
PMR Science Chapter 8 Generation of Electricity
This document discusses how electricity is generated and distributed. It explains that generators in power stations convert mechanical energy (from steam, water, gas, or nuclear power) into electrical energy. The electricity is then stepped up to high voltages for transmission over power lines before being stepped down for distribution to homes and businesses. Transformers are used to adjust voltages for transmission and distribution. The document also provides an overview of how electricity is distributed to homes and wired within a home for safe use.
Electrical q
This document provides answers to various electrical engineering questions. It explains that ELCBs cannot work properly if the neutral input is not grounded because it needs the return current path to detect faults. It distinguishes between MCBs and MCCBs based on their current ratings and types of protection. It also describes why earth pins are thicker than other pins in plugs and why delta-star transformers are used for lighting loads.
TRANSMISSION LINES.pptx
The document summarizes voltages used in power generation and transmission. It explains that power plants generate high voltages like 22,000V, which are stepped up for long distance transmission. Transmission lines carry power at these high voltages across the country. Along the way, substations use transformers to step down the voltages for local distribution through smaller lines. Finally, transformers further step down voltages to 110V or 240V for use in homes.
Tutor core 01 electricity safety
This document provides guidance on working safely with electricity in construction. It outlines several electrical hazards including faulty installations, lack of maintenance, and abuse of equipment. Electric shock can occur from contact between a live conductor and earth, and can cause heat, fire, or explosion. Cables are color coded by voltage and three-pin plugs with earth connections should be used. Transformers and residual current devices can reduce voltage for safety. Buried cables must be protected and cables on the ground should only be used temporarily with protection. Suspended cables must be properly supported above head height and electrical hazards should be reported. Equipment must be stored properly per manufacturers' instructions.
Tutor core 01 electricity safety
This document provides guidance on working safely with electricity in construction. It outlines several electrical hazards including faulty installations, lack of maintenance, and abuse of equipment. Electric shock can occur from contact between a live conductor and earth, and can cause heat, fire, or explosion. Cables are color coded by voltage and three-pin plugs with earth connections should be used. Transformers and residual current devices can reduce voltage for safety. Buried cables must be protected and cables on the ground should only be used temporarily with protection. Suspended cables must be properly supported above head height and electrical hazards should be reported. Equipment must be stored properly per manufacturers' instructions.
Introduction
1. Dynamic Elecpower Private Limited is a well-established company in Jaipur, Rajasthan, India that manufactures and supplies electrical panels and components.
2. The company has a 2000 square meter facility for panel manufacturing with in-house fabrication, powder coating, and chemical pre-treatment.
3. Dynamic Elecpower offers customized control relay panels, motor control centers, variable frequency drives, soft starter panels and other products for industrial applications.
introduction to high voltage engineering.pdf
This document provides an introduction to high voltage engineering. It discusses key topics including:
- The importance of high voltage insulation design and testing for electric power systems.
- How higher transmission voltages are needed to reduce line losses and increase efficiency.
- Common voltage levels used in power generation, transmission, distribution and consumption.
- The advantages of interconnected high voltage power grids and why higher voltages are needed on power systems.
- Key factors in electrical insulation and the various dielectric materials that are used.
Chapter 3 - Electromagnetism, 3.5 Generation & Transmission of Electricity
Electricity is generated at power stations by generators that transform different sources of energy. It is transmitted through cables connected in a national grid network to distribute power to towns, cities, and homes. The network uses high voltage transmission to reduce power losses in cables and step-up/step-down transformers to safely adjust voltages for transmission and local distribution. Maintaining the grid ensures uninterrupted power supply even if a station is down and allows generation to match demand patterns cost effectively.
Switchgear.pptx
This document provides an overview of low voltage electrical installations and their components. It discusses the electrical system from generation down to secondary distribution. Key components of low voltage switchgear are explained, including switches, fuses, circuit breakers, and relays. Switch fuse units, miniature circuit breakers, and molded case circuit breakers are described along with their purposes and features. The document also covers air circuit breakers, low voltage wires and cables, earthing systems, and earth leakage circuit breakers.
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Chapter 3 - Electromagnetism, 3.5 Generation & Transmission of Electricity
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Study of blood is called HAEMATOLOGY.
Blood makes up about 7% of the total body weight of an adult, with an average volume of about 5 liters in males and 4.5 liters in females.
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Analytical Chemistry.pdf
This document presents information about analytical chemistry from a student named Yeshwant B Rao. It defines analytical chemistry as the study and use of instruments and methods to separate, identify, and quantify matter. It discusses areas where chemical analysis is used like separation, identification, and quantitation. It also outlines different analytical chemistry methods including classical "wet chemistry" methods using separations like precipitation and distillation, as well as instrumental methods using chromatography and electrophoresis. Finally, it describes the work of analytical chemists in performing tests, separations, developing new measurement techniques, and advancing the field through collaboration.
Cell.pdf
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The Revolt of 1857.pptx
India's first struggle for independence.
What is the revolt of 1857??
It was India's First War of Independence
It started on May 10, 1857, by Mangal Pandey.
What Caused the revolt?
Political
Economical
Military
Social
Administrative
Religious
Reasons for the failure of the revolt of 1857:-
The revolt was only localized as limited parts of northern India South India was quiet
The British have faced very little resistance in the West
There was a lack of proper leadership or Administration
The British forces were well organized with advanced equipment some people were on the side of the British
Thank you
Jai hind Jai Bharat!
Presented by:- Yeshwant B Rao
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Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
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Domestic Electric Circuits.pdf
- 1. Domestic Electric Circuits Presented by- Yeshwant Rao B Class- 10 A
- 2. How is electricity generated?
- 4. Electrical energy reaches our homes via wires coming from the poles Electrical Energy reaching home
- 5. These wires are called Mains
- 6. Live wire or Positive Wire Neutral wire or Negative wire
- 7. The potential difference between the live and the neutral wire in India is 220V
- 8. Wires in domestic circuits
- 10. What is the use of Ground wire? V= 0 for ground with very low resistance
- 11. Mains have two circuits Lightning Circuits 5A for low power consumption devices Power Circuits 15A for high power consumption devices
- 12. Hazards of Domestic Circuits Overloading The excessive flow of current due to overuse of appliances Short Circuit
- 13. Hazards of Domestic Circuits Overloading The excessive flow of current due to overuse of appliances Short Circuit Flow of High current in the circuit when live and neutral wires come in direct contact
- 14. How do we prevent overloading and short circuit? We use Fuse and MCB’s
- 15. THANK YOU!