relative motion between conducting wires and magnetic lines of force. ❖ Electric motor is in operation when it is supplied with electrical energy and develops torque‚ that is‚ a tendency to produce rotation. ❖ In DC generator‚ the armature winding is mechanically rotated through the stationary magnetic fields created by the electromagnets or permanent magnets. ❖ In AC generator‚ the electromagnets or permanent magnets and their accompanying magnetic fields are rotated with respect to the
Premium Electric motor Electrical generator Electricity
CHAPTER 1 INTRODUCTION 1.1 INTRODUCTION Transport along with communication‚ forms the core of day to day life of modern world. Conventional rail transport through wide spread is now being considered inefficient in terms of fuel consumption and is time consuming. A genuine replacement for railways which is not only fuel efficient but also highly comfortable and can attain unimaginable velocities of around 450 – 500kms/hr are Maglev Trains whose idea was given by Robert Goddard‚ an American
Premium Magnetic field Magnet Electromagnetism
SUMMARY Magnetic levitation is the process of levitating an object by exploiting magnetic fields. If the magnetic force of attraction is used‚ it is known as magnetic suspension. If magnetic repulsion is used‚ it is known as magnetic levitation. In the past‚ magnetic levitation was attempted by using permanent magnets. Earnshaw’s theorem however‚ proves that this is mathematically impossible. There exists no arrangement of static magnets of charges that can stably levitate an object. There
Free Magnetic field Magnetism Magnet
Electrodynamic Wattmeter The electrodynamic wattmeter is used to measure (Useful) power taken from ac power supplies. The electrodynamic wattmeter uses the reaction between the magnetic fields of two current-carrying coils‚ one fixed and the other movable. The voltage and current coils are wound around a laminated iron core to produce a magnetic field across the air gap. When the current through the fixed-position field windings is the same as current through the load and the current through the moving coil
Free Magnetic field Alternating current
<center><b>What is the evidence for our knowledge of the internal structure of the Earth?</b></center><br><br>As we enter the twenty first century we are beginning to learn more and more about the composition of the Earth. Early predictions have thrown up some rather strange and peculiar thoughts as to what is making up our Earth‚ but now day¡¦s scientists can be confident that the Earth is made up of what they think. As from experiments and other sources of information a picture to what is really
Premium Earth Asthenosphere Volcano
packed helix. In physics‚ the term solenoid refers to a long‚ thin loop of wire‚ often wrapped around a metallic core‚ which produces a magnetic field when an electric current is passed through it. Solenoids are important because they can create controlled magnetic fields and can be used as electromagnets. The term solenoid refers specifically to a magnet designed to produce a uniform magnetic field in a volume of space (where some experiment might be carried out). In engineering‚ the term solenoid may
Premium Magnetic field
Contents: 1. Introduction 1.1 Basic Physics of Charged Particles Moving In a Magnetic Filed 1.2 The Lorentz Force 1.3 The Hall Effect 2. What Is Plasma? 2.1 What is it that distinguishes plasma from ordinary gases? 2.2 Commercial Applications 2.3 Waves in Plasma 3. Nuclear Fusion & Fusion Reactors 3.1 The Lawson’s Criterion 3.2 Magnetic Field Confinement 3.3 Inertial Confinement 4. TFTR & Its Contributions to Engineering 4.1 Transport 4.2 Fusion Power Production 4.3 Alpha-Particles
Premium Magnetic field Electric charge
PROJECT REPORT ON MINIMUM SUPPORT PRICE IN INDIAN ECONOMY
Premium Supply and demand Wheat
PAMANTASAN NG LUNGSOD NG MAYNILA (University of the City of Manila) Intramuros‚ Manila‚ Philippines COLLEGE OF MANAGEMENT AND ENTREPRENEURSHIP March ____‚ 2013 Dear Sir/Madam: As part of the curriculum of the College of Management and Entrepreneurship‚ we are requiring students to undergo on-the-job training for the purpose of developing their skills through actual exposure in their line of specialization and observe the manner in which related problems can be solved. We incorporated
Premium Manila
NURSYAHIRA ABD HAMID ASSIGNMENT 1 Explain the concept and purpose of the geochemical‚ gravity‚ electromagnetic and magnetic surveys. 1. Concept and purpose of geochemistry Petroleum geochemistry has played an important role in many areas of exploration and production for fossil fuels. Many of the more recent developments can be seen to have developed in parallel with developments in analytical chemistry such as gas chromatography and gas chromatography−mass spectrometry. For the past two decades
Premium Magnetic field Gravitation Electromagnetism