1. INTRODUCTION Electrical substation for distribution system is the main supply to convert the high voltage (HV) to low voltage (LV) and the place where load are distributed to the consumers. In Malaysia‚ Tenaga Nasional Berhad Distribution (TNBD) used the 33/0.433kV‚ 22/0.433kV‚ 11/0.433kV and 6.6/0.433kV voltage system for the electrical system to supply for domestic consumer and industrial consumer such as factory which will supplied directly from Transmission Main Intakes (PMU)‚ Main Distribution
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Electrical technology – assignment 4 Properties of electrical materials and Effective use of technology P.5. Describe the properties and a typical application of a solid and a liquid or gas electrical conductor. A conductor is a material that allows free movement of electrons and therefore allows easy flow of electricity. Most conductors are metals. A common metal used as a conductor in electrical technology is aluminium. It is used quite a lot as it cheap‚ lightweight and in abundance compared
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conveniently designed conductive disks allow the electrical load of the generator to be fed either with alternating current or direct current. the loop terminals is sinusoidal with zero mean value (Fig. 2). Its frequency is equal to the number of revolutions per second executed by the loop. Each terminal of the loop is connected to a metallic ring. The contacts with rings are made by means of fixed brushes. If the brushes are connected to an electrical load‚ an alternating current will be established
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L&T SWITCHGEAR SAFE & SURE ELECTRICAL SAFETY E S P SERVICE MANUAL GENERAL Electricity is good servant but bad master. It can prove to be very dangerous if circuits are not properly protected. The major fault that appears in electrical network or equipment is termed as short circuit. In short circuit‚ the supply phase and neutral or earth is short circuited accidentally due to foreign metallic substance coming in contact with phase & neutral or earth or due to overload thereby damaging
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diagnosed and put right as quickly as possible writing reports and giving presentations. Conditions Mechanical engineers work in a wide variety of locations‚ including offices‚ design laboratories‚ workshops and factories. If you work in production‚ the conditions can sometimes be noisy‚ dirty or dusty and you may have to wear safety glasses‚ footwear and headgear. Many engineers work normal hours‚ but if you are involved in continuous production in industry you may have to be on call outside
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How Engineers Contribute Society’s standards always change and engineers contribute to society by meeting these demands. Engineers create technology and devices that people use day to day. They innovate current technology by making it more practical and improving the quality to satisfy consumers. When society’s trends and fads change‚ engineers comply by redesigning products to accommodate for the changes. Engineers save time and money for every one by speeding up processes and cutting down production
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solar energy‚ and technological impacts to society. MECHANICAL ENGINEERS study the behavior of materials when forces are applied to them‚ such as the motion of solids‚ liquids‚ gases and heating and cooling of object and machines. Using these basic building blocks‚ engineers design space vehicles‚ computers power plants‚ intelligence machines and robots‚ automobiles‚ trains‚ airplanes‚ furnaces‚ and air conditioners. Mechanical engineers work on the jet engine design‚ submarines‚ hot air balloons‚
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the field is given by the direction of that force. Electric fields contain electrical energy with energy density proportional to the square of the field amplitude. The electric field is to charge as gravitational acceleration is to mass and force density is to volume. 1. Suppose that two point charges‚ each with a charge of +1.00 Coulomb are separated by a distance of 1.00 meter. Determine the magnitude of the electrical force of repulsion between them. Given: Q1 = 1.00 C Q2 = 1.00 C
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affordable and reliable‚ have flexibility of control‚ and offer significant electrical energy savings through greatly reduced electric bills. They are used in a wide variety of applications for various reasons. For example‚ they are the most effective energy savers in pump and fan applications; they enhance process operations‚ particularly where flow control is involved. VFDs provide soft-start capabilities‚ which decrease electrical stresses and line voltage sags associated with full voltage motor start-ups
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Table of Contents Objective – Chapter 1 1 1.0 INTRODUCTION TO ELECTRICAL CIRCUITS 2 Basic Quantities and Units in Electrical 2 Quantities 2 Units 3 Factors Affecting Resistance 4 Length of the Conductor: 4 Area of Cross-Section of the Conductor: 4 Electrical Resistivity of Substances 5 Effect of Temperature 5 Components of Electrical Circuits 6 Components of an Electric Circuit 7 Measuring Current‚ Voltage and Resistance 8 Measuring voltage 8 Measuring current 9 Measuring
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