Published by NCERT Class XII (Theory) One Paper Unit I Unit II Unit III Unit IV Unit V Unit VI Unit VII Unit VIII Unit IX Unit X Time: 3 Hours Electrostatics Current Electricity Magnetic effect of current & Magnetism Electromagnetic Induction and Alternating current Electromagnetic Waves Optics Dual Nature of Matter Atoms and Nuclei Electronic Devices Communication Systems Total Total Periods : 180 70 Marks 08 07 08 08 03 14 04 06 07 05 70 Unit I: Electrostatics (Periods 25) Electric Charges;
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comfortable and can attain unimaginable velocities of around 450 – 500kms/hr are Maglev Trains whose idea was given by Robert Goddard‚ an American Rocket scientist‚ in 1904 who gave a theory that trains could be lifted off the tracks by the use of electromagnetic rails. Many assumptions and ideas were brought about throughout the following years‚ but it was not until the 1970’s that Japan and Germany showed interest in it and began researching and designing. The motion of the Maglev train is based
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developed when this force is applied at a given distance from the axis of the rotor. Most electromagnetic motors are rotary‚ but linear types also exist. In a rotary motor‚ the rotating part (usually on the inside) is called the rotor‚ and the stationary part is called the stator. The motor contains electromagnets that are wound on a frame. Though this frame is often called the armature. The electromagnetic field works as shown in the diagrams below. DC motors. A simple DC electric motor. When
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System‚ measure CCW with 0° at positive x-axis) * Bearing = [N 160°] (measure CW from North position) 2: Energy * Dynamics: causes of motion * Force: push or pull‚ vector quantity * 4 fundamental forces: gravitational‚ electromagnetic‚ strong nuclear‚ weak nuclear * Unit of force: Newton (N) ->1N = 1(kg x m)/s2 * Net force/resultant force: vector sum of all forces acting on an object * Mass: quantity of matter in an object (standard: kg) * Weight: force of gravity
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2.1 Motors use the effect of forces on current-carrying conductors in magnetic fields 2.1.1 The motor effect The motor effect is where a force acts on a current-carrying conductor in a magnetic field. The right hand palm rule is used to find certain properties: fingers point to magnetic field‚ thumb points in DC direction and palm points to direction of the force. 2.1.2 Factors affecting the force acting on the current-carrying conductor Forces are experienced by the electrons in the conductor
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What is Magnetism? Properties of Magnets: Magnet: any material that attracts iron and materials that contain iron Magnets attract iron and materials that contain iron. magnets attract or repel other magnets. In addition‚ one part of a magnet will always point north when allowed to swing freely. Magnetic Poles: Magnetic Pole: any magnet with 2 ends‚ each is called a magnetic pole. Magnetic poles that are unlike attract each other and magnetic poles that are alike repel each other. Magnetic
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I DESIGN OF FRICTIONLESS TRAIN SYSTEM USING MAGNETIC LEVITATION A Project report submitted in partial fulfillment of the requirement for the award of degree of BACHELOR OF TECHNOLOGY IN MECHANICAL ENGINEERING Submitted By P. Rekha Punnami - 09241A0390 N. Sahithi Reddy - 09241A0395 Under the Guidance of Dr. ADAPA RAMA RAO Professor & Dean Department Of Mechanical Engineering Gokaraju Rangaraju Institute of Engineering and Technology Bachupally‚ Hyderabad – 500 090
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HSC Physics Space 1. The Earth has a gravitational field that exerts a force on objects both on it and around it Define weight as the force on an object due to a gravitational field Mass is a measure of the amount of matter in an object‚ it is measured in kilograms (kg). The weight of an object is a measure of the force with which it is attracted by a gravitational force‚ it is measured in Newtons (N). It is directly related to the strength of the gravitational field at a point where the object
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MAGNETIC LEVITATION AND TRAINS BY: MANISH KUMAR 2K12/EE/075 Delhi Technological University INTRODUCTION MAGLEV = MAGNETIC + LEVITATION Magnetic means “based on magnets” Levitation means “to rise and float in air” Maglev is a method of propulsion that uses magnetic levitation to propel vehicles with magnets rather than with wheels that the conventional trains use. Magnetic levitation is the use of magnetic fields to levitate a (usually) metallic object. Manipulating magnetic fields and
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machine belt type and tube type electromagnetic magnetic separation machine. Until 1965‚ just from Sweden Sarah company introduces the cavitation permanent magnet magnetic separation machine‚ and counterfeit‚ because it save electricity and magnetic induction high strength‚ simple structure‚ low cost‚ easy operation and maintenance‚ machine quality is light‚ cover an area of an area small‚ processing capacity‚ so fast in China in application‚ all replaced the electromagnetic magnetic separation machine
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