Essays On Electricity

Class A amplifiers amplify over the whole of the input cycle such that the output signal is an exact scaled-up replica of the input with no clipping. Class A amplifiers are the usual means of implementing small-signal amplifiers. They are not very efficient — a theoretical maximum of 50% is obtainable, but for small signals, […]

Introduction of corporation profile Tenaga Nasional Berhad financial analysis 1998-2007 Profitability ratios and sales revenue Leverage management Earnings per share Liquidity ratios Fixed asset turnover Introduction Tenaga Nasional Berhad (TNB) is the largest utility company in Malaysia. It is also the largest power company in Southest Asia with RM65 billion worth of assets serving over six […]

Physics Practical Report Experiment Ohmic Resistance and Ohm’s Law Aim To find out how current, voltage and resistance in a circuit are related, also to discover the relationship known as ‘Ohm’s Law’. Hypothesis In this experiment, conductors are used. Conductors which obey Ohm’s Law are called Ohmic conductors. Thus, for an ohmic conductor, a graph […]

Small curls of a shiny, metallic looking substance float down onto a mountain of shreds. These shreds belong to cars– the Honda EVs (electric vehicles), to be exact. In the thought-provoking documentary, Who Killed the Electric Car? , director Chris Paine looks into the birth, rise, and fall of the electric car. This 2006 documentary […]

Introduction In an effort to achieve organizational goals, a large part of General Electric’s overall strategy involves rigorous management oversight and dedication to controllership. Controls are processes that “direct the achievement of individuals toward the achievement of organizational goals” (Bateman & Snell, 2007).Four control mechanisms used by GE are Six Sigma, performance measurement, internal and […]

 INTRODUCTION The potential benefits of electrical energy supplied to a number of consumers from a common generating system were recognized shortly after the development of the ‘dynamo’, commonly known as the generator. The first public power station was put into service in 1882 in London (Holborn). Soon a number of other public supplies for electricity […]

With this guide, I am attempting to gather as much useful information as I can and present it in the arm of a single resource that owners of the ACE can find useful. I am not an electrician, nor a professional motorcycle mechanic. I do, however have basic training and understanding of electrical and electronic […]

We wish to express our profound thanks to all those who helped in making this report a reality. Much need moral support and encouragement is provided on numerous occasions by our whole friends, UPCL members and seniors We would also like to take the opportunity to acknowledge the contribution of all faculty members of the […]

As we know that today time is important and everyone wants to be out of the long billing queues as everyone is in hurry so we bring scheme of recharging meter just as we charge our cellular mobiles. In this system the consumers are required to purchase the electricity before consuming it. One gets a […]

Absolutely, choosing a LED manufacturer having very sound reputation can relatively ensure the product quality, but compared to the same category of products, the price is much higher, they tend to sell the brand, there is no doubt that these are not the most preferable LED manufacturers for us ordinary consumers, what is the best […]

Electric cars are cars that are propelled by one electric motor or more. The motor is powered by electrical energy stored in batteries or another energy storage device. These cars were popular in the late 19th century and early 20th century until the advance in internal combustion and mass production of cheaper gasoline. Electric cars […]

Potentiometer construction Potentiometers comprise a resistive element, a sliding contact (wiper) that moves along the element, making good electrical contact with one part of It, electrical terminals at each end of the element, a mechanism that moves the wiper from one end to the other, and a housing containing the element and wiper. Many Inexpensive […]

Objective:Plot the equipotential lines patterns of electric fields set up by electrodes of different shapes.Apparatus:Result:The experimental results were get by setting up the apparatus as shown below first. – A paper was placed under the conducting plate.- Three electrodes were dipped into the conducting plate- One of the electrodes and a flying probe were connected […]

Solar Cells are used to convert available light into electrical energy. They do this without the use of chemical reactions. This conversion process is based on the work done by a French physicist named Alexander Becquerel in 1839. He discovered the photoelectric effect which describes the release of positive and negative charge carriers in a […]

The choice of an insulation material is usually made depending on the application. Polyethylene and polystyrene are usually used in high-frequency applications. Insulators must also be selected according to the maximum temperature they will encounter.I.E. Teflon is used in the high-temperature range of 175° to 230° C. Other materials may need to be used in […]

For my experiment, I chose to test and evaluate a linear position sensor, and identify a possible use for this sensor in every day life. The experiment was done using a variety of apparatus, as seen in the list below, and was set up as shown in the diagram which follows.Apparatus:Retort stand with two clamps100g, […]

Indeed GE’s success can be attributed to the 20-year leadership of CEO Jack Welch from 1981 to 2000. What is most striking here, that visibly shows how Welch’s leadership mattered to GE, was that two years after he retired, GE’s market value had fallen by 45 percent and the S & P index decreased by […]

The revolution of wireless communication industry gradually was inching up the spectrum with transition from long and strong wavelengths towards wide and weak bands of shorter wavelengths. Mobile phone services have transited from the 1950s radio systems using low FM frequencies near 100 megahertz, to the 1960s spectrum band of 450 megahertz, to the present […]

Looking back at the early beginnings of information technology in the late 19th century, it was humbly a working and operational mode of calculator machines. Communication was not its initial aim. It was merely to facilitate calculations of large sums of numbers. Its capability was limited then. A replica of the machine is demonstrated by […]

A lightning arrester Is a device used on electrical power systems and telecommunications systems to protect the Insulation and conductors of the system from the damaging effects of lightning. The typical lightning arrester has a high-voltage terminal and a ground terminal. When a lightning surge (or switching surge, which is very similar) travels along the […]

These sensors usually employ an audible alarm to alert people when a dangerous gas has been detected. Common sensors used today include Infrared Point Sensor, ultrasonic gas detectors, electrochemical gas detectors, and Semiconductor Sensors. More recently, Infrared Imaging sensors have come Into use. All of these sensors are used for a wide range of applications, […]

Thomas Alva Edison, a very famous inventor who lived during the 19th and 20th centuries, invented the incandescent light bulb, the phonograph, and over a thousand other devices.  He was always thinking of new ways to do things.  Perhaps his only invention that wasn’t an “improvement” of another device was the phonograph.  Many of his […]