# Chapter 29 Electromagnetic Induction

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 Chapter 29 Electromagnetic Induction Lecture by Dr. Hebin Li

2 Goals of Chapter 29 To examine experimental evidence that a changing magnetic field induces an emf To learn how Faraday s law relates the induced emf to the change in flux To determine the direction of an induced emf To calculate the emf induced by a moving conductor To learn how a changing magnetic flux generates an electric field To study the four fundamental equations that describe electricity and magnetism

3 Induced current A changing magnetic flux causes an induced current. The induced emf is the corresponding emf causing the current. A time-varying magnetic field can act as a source of electric field

4 Magnetic flux through an area element Figure below shows how to calculate the magnetic flux through an element of area.

5 Magnetic flux through a finite area The flux depends on the orientation of the surface with respect to the magnetic field.

6 Faraday s law Faraday s law: The induced emf in a closed loop equals the negative of the time rate of change of magnetic flux through the loop. IF the coil has N identical turns, and if the flux varies at the same rate through each turn, then Change of flux can have various causes.

7 Example: emf and the current induced in a loop A coil of 5.00 cm in radius, containing 100 turns, is placed in a uniform magnetic field that varies with time according to B = T t + ( T s s 4)t4. The coil is connected to a 500-Ω resistor, and its plane is perpendicular to the magnetic field. You can ignore the resistance of the coil. (a) Find the magnitude of the induced emf in the coil as a function of time. (b) What is the current in the resistor at time t = 5.00 s?

8 Example: A rectangle measuring 30.0 cm by 40.0 cm is located inside a region of a spatially uniform magnetic field of 1.25 T, with the field perpendicular to the plane of the coil. The coil is pulled out at a steady rate of 2.00 cm/s traveling perpendicular to the field lines. The region of the field ends abruptly as shown. Find the emf induced in this coil when it is (a) all inside the field; (b) partly inside the field; (c) all outside the field.

9 Direction of the induced emf Define a positive direction With the defined positive direction, determine the signs of the magnetic flux Φ B and its rate of change dφ B /dt. Determine the sign of the induced emf ( dφ B /dt). Use the right hand rule to determine the direction of the induced emf and current. Note: an easier way is to use Lenz s law.

10 A simple alternator

11 DC generator and back emf in a motor

12 Lenz s law Lenz s law: The direction of any magnetic induction effect is such as to oppose the cause of the effect.

13 Examples: applications of Lenz s law There is a current in the straight wire going from right to left. What is the direction of the induced current in the round coil if the current increases?

14 Examples: applications of Lenz s law In the figure below, the bar is moving to the left. What is the direction of the induced current?

15 Slidewire generator In a slidewire generator, a U-shaped conductor is placed in a uniform magnetic field that is perpendicular to the plane. We lay a metal rod (slidewire) across the two arms of the conductor, forming a circuit, and move it to the right with constant velocity. This induces an emf and a current. Find the magnitude and direction of the resulting induced emf.

16 Motional electromotive force The motional electromotive force across the ends of a rod moving perpendicular to a magnetic field is

17 Examples: The conducting rod ab shown in the figure below makes contact with metal rails ca and db. The apparatus is in a uniform magnetic field of T, perpendicular to the plane of the figure (a) Find the magnitude of the emf induced in the rod when it is moving toward the right with a speed 7.50 m/s. (b) In what direction does the current flow in the rod? (c) If the resistance of the circuit abdc is 1.5 Ω and does not change, find the force (magnitude and direction) required to keep the rod moving to the right with a constant speed of 7.50 m/s. (d) Compare the rate at which mechanical work is done by the force (Fv) with the rate at which thermal energy is developed in the circuit (I 2 R).

18 Induced electric fields Changing magnetic flux causes an induced electric field. The induced electric field for a solenoid can be measured. The line integral of the induced electric field around a closed path is equal to the induced emf. Faraday s law can be restated in terms of the induced electric field.

19 Induced electric fields The magnetic field along the solenoid axis Neglect the small field outside the solenoid, then the magnetic flux through the loop is

20 Maxwell s equations Maxwell s equations consist of

### Physics 121 Practice Problem Solutions 11 Faraday s Law of Induction

Physics 121 Practice Problem Solutions 11 Faraday s Law of Induction Contents: 121P11-1P, 3P,4P, 5P, 7P, 17P, 19P, 24P, 27P, 28P, 31P Overview Magnetic Flux Motional EMF Two Magnetic Induction Experiments

### Phys102 Lecture 20/21 Electromagnetic Induction and Faraday s Law

Phys102 Lecture 20/21 Electromagnetic Induction and Faraday s Law Key Points Induced EMF Faraday s Law of Induction; Lenz s Law References SFU Ed: 29-1,2,3,4,5,6. 6 th Ed: 21-1,2,3,4,5,6,7. Induced EMF

### Electromagnetic Induction and Faraday s Law

Electromagnetic Induction and Faraday s Law Solenoid Magnetic Field of a Current Loop Solenoids produce a strong magnetic field by combining several loops. A solenoid is a long, helically wound coil of

### Chapter 23 Magnetic Flux and Faraday s Law of Induction

Chapter 23 Magnetic Flux and Faraday s Law of Induction Units of Chapter 23 Induced Electromotive Force Magnetic Flux Faraday s Law of Induction Lenz s Law Mechanical Work and Electrical Energy Generators

### Almost 200 years ago, Faraday looked for evidence that a magnetic field would induce an electric current with this apparatus:

Chapter 21 Electromagnetic Induction and Faraday s Law Chapter 21 Induced EMF Faraday s Law of Induction; Lenz s Law EMF Induced in a Moving Conductor Changing Magnetic Flux Produces an E Field Inductance

### Update. This week A. B. Kaye, Ph.D. Associate Professor of Physics. Michael Faraday

10/26/17 Update Last week Completed Sources of Magnetic Fields (Chapter 30) This week A. B. Kaye, Ph.D. Associate Professor of Physics (Chapter 31) Next week 30 October 3 November 2017 Chapter 32 Induction

### INDUCED ELECTROMOTIVE FORCE (1)

INDUCED ELECTROMOTIVE FORCE (1) Michael Faraday showed in the 19 th Century that a magnetic field can produce an electric field To show this, two circuits are involved, the first of which is called the

### Figure 1: Relative Directions as Defined for Faraday s Law

Faraday s Law INTRODUCTION This experiment examines Faraday s law of electromagnetic induction. The phenomenon involves induced voltages and currents due to changing magnetic fields. (Do not confuse this

### Chapter 20. Induced Voltages and Inductance

Chapter 20 Induced Voltages and Inductance Michael Faraday 1791 1867 Great experimental scientist Invented electric motor, generator and transformers Discovered electromagnetic induction Discovered laws

### 4) With an induced current, thumb points force/velocity and palm points current

Matt Katz Chapter 22 Review Right Hand Rules 1 st Right Hand Rule - use for wires 1) point thumb in direction of current (I) 2) B is where your fingers point 2 nd Right Hand Rule - use for solenoids or

Induction EX-9914 Page 1 of 6 EQUIPMENT Faraday's Law of Induction INCLUDED: 1 Induction Wand EM-8099 1 Variable Gap Lab Magnet EM-8641 1 Large Rod Stand ME-8735 2 45 cm Long Steel Rod ME-8736 1 Multi

### Experiment 10. Faraday s Law of Induction. One large and two small (with handles) coils, plastic triangles, T-base BNC connector, graph paper.

PHYSICS 171 UNIVERSITY PHYSICS LAB II Experiment 10 Faraday s Law of Induction Equipment: F Supplies: unction Generator, Oscilloscope. One large and two small (with handles) coils, plastic triangles, T-base

Purpose Theory Faraday's Law of Induction a. To investigate the emf induced in a coil that is swinging through a magnetic field; b. To investigate the energy conversion from mechanical energy to electrical

### Lab 9: Faraday s and Ampere s Laws

Lab 9: Faraday s and Ampere s Laws Introduction In this experiment we will explore the magnetic field produced by a current in a cylindrical coil of wire, that is, a solenoid. In the previous experiment

### Danyal Education (Contact: ) A commitment to teach and nurture. c) sketch a graph of voltage output against time for a simple a.c.

(Contact: 9855 9224) Electricity and Magnetism: Electromagnetic Induction (*) (#) Candidates should be able to: a) deduce from Faraday s experiments on electromagnetic induction or other appropriate experiments:

### If the magnetic field is created by an electromagnet, what happens if we keep it stationary but vary its strength by changing the current through it?

If a moving electron in a magnetic field experiences a force pushing on it at right angles to its motion, what happens when we take a copper wire (with lots of easily dislodged electrons in it) and move

### CHAPTER 6 INTRODUCTION TO MOTORS AND GENERATORS

CHAPTER 6 INTRODUCTION TO MOTORS AND GENERATORS Objective Describe the necessary conditions for motor and generator operation. Calculate the force on a conductor carrying current in the presence of the

Make Your Own Electricity Topic Electromagnetic induction Introduction Electromagnetic induction the creation of a difference in electric potential between the ends of a conductor moving in a magnetic

### ELECTROMAGNETIC INDUCTION

83 E7 ELECTROMAGNETIC INDUCTION OBJECTIVES Aims By studying this chapter you should get to understand the nature of the two kinds of electromagnetic induction, the differences between them and their common

### Electromagnetic Induction (approx. 1.5 h) (11/9/15)

(approx. 1.5 h) (11/9/15) Introduction In 1819, during a lecture demonstration, the Danish scientist Hans Christian Oersted noticed that the needle of a compass was deflected when placed near a current-carrying

### ELEN 236 DC Motors 1 DC Motors

ELEN 236 DC Motors 1 DC Motors Pictures source: http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/mothow.html#c1 1 2 3 Some DC Motor Terms: 1. rotor: The movable part of the DC motor 2. armature: The

### Electrical machines - generators and motors

Electrical machines - generators and motors We have seen that when a conductor is moved in a magnetic field or when a magnet is moved near a conductor, a current flows in the conductor. The amount of current

### ELECTROMAGNETIC INDUCTION. Faraday s Law Lenz s Law Generators Transformers Cell Phones

ELECTROMAGNETIC INDUCTION Faraday s Law Lenz s Law Generators Transformers Cell Phones Recall Oersted's principle: when a current passes through a straight conductor there will be a circular magnetic field

### Electrical Machines II. Week 5-6: Induction Motor Construction, theory of operation, rotating magnetic field and equivalent circuit

Electrical Machines II Week 5-6: Induction Motor Construction, theory of operation, rotating magnetic field and equivalent circuit Asynchronous (Induction) Motor: industrial construction Two types of induction

### Pre-lab Quiz/PHYS 224 Faraday s Law and Dynamo. Your name Lab section

Pre-lab Quiz/PHYS 224 Faraday s Law and Dynamo Your name Lab section 1. What do you investigate in this lab? 2. In a dynamo, the coil is wound with N=100 turns of wire and has an area A=0.0001 m 2. The

MSRAJA ELGADFY/ELECTROMAGENETIC PAPER3 1- In Fig 91, A and B are two conductors on insulating stands Both A and B were initially uncharged X Y A B Fig 91 (a) Conductor A is given the positive charge shown

### MAGNETIC EFFECTS OF ELECTRIC CURRENT

MAGNETIC EFFECTS OF ELECTRIC CURRENT It is observed that when a compass is brought near a current carrying conductor the needle of compass gets deflected because of flow of electricity. This shows that

### MAGNETIC EFFECT OF ELECTRIC CURRENT

BAL BHARATI PUBLIC SCHOOL, PITAMPURA Class X MAGNETIC EFFECT OF ELECTRIC CURRENT 1. Magnetic Field due to a Current through a Straight Conductor (a) Nature of magnetic field: The magnetic field lines due

### ELECTROMAGNETISM. 1. the number of turns. 2. An increase in current. Unlike an ordinary magnet, electromagnets can be switched on and off.

ELECTROMAGNETISM Unlike an ordinary magnet, electromagnets can be switched on and off. A simple electromagnet consists of: - a core (usually iron) - several turns of insulated copper wire When current

### INTRODUCTION Principle

DC Generators INTRODUCTION A generator is a machine that converts mechanical energy into electrical energy by using the principle of magnetic induction. Principle Whenever a conductor is moved within a

### CHAPTER 13 MAGNETIC EFFECTS OF ELECTRIC CURRENT

CHAPTER 13 MAGNETIC EFFECTS OF ELECTRIC CURRENT Compass needle:- It is a small bar magnet, whose north end is pointing towards north pole and south end is pointing towards south pole of earth..hans Oersted

### DC Generator. - The direction of current flow in the conductor is given by Fleming s right hand rule. Figure 2: Change in current direction

DC Generator 1. THE DIRECTION OF CURRENT DUE TO INDUCED VOLTAGE: UNDERSTANDING FLEMING S RIGHT HAND RULE - The direction of current flow in the conductor is given by Fleming s right hand rule Figure 1:

### Human Energy Generation and Electrical Signal Measurement

Human Energy Generation and Electrical Signal Measurement Energy Generation and Usage Earth s Energy Balance Yearly energy resources (TWh) Solar energy absorbed by atmosphere, oceans, Earth[1] 751,296,000.0

### MAGNETIC FORCE ON A CURRENT-CARRYING WIRE

MAGNETIC FORCE ON A CURRENT-CARRYING WIRE Pre-Lab Questions Page 1. What is the SI unit for Magnetic Field? Name: Class: Roster Number: Instructor: 2. The magnetic field on a wire is 12.0 x 10 5 Gausses,

### HSC Physics. Module 9.3. Motors and. Generators

HSC Physics Module 9.3 Motors and Generators 9.3 Motors and Generators (30 indicative hours) Contextual Outline Electricity is a convenient and flexible form of energy. It can be generated and distributed

### MAGNETIC EFFECTS OF ELECTRIC CURRENT

MAGNETIC EFFECTS OF ELECTRIC CURRENT VERY SHORT ANSWER TYPE QUESTION [1 MARK] 1. Name the type of current: (a) used in household supply. (b) given by a cell. (a) Alternating current. (b) Direct current.

### Introduction to Actuators

Introduction to Actuators Dr. Bishakh Bhattacharya h Professor, Department of Mechanical Engineering IIT Kanpur Joint Initiative of IITs and IISc - Funded by MHRD This Lecture Contains Why Energy Conversion

### Electromagnetism. Investigations

Electromagnetism Investigations Autumn 2015 ELECTROMAGNETISM Investigations Table of Contents Magnetic effect of an electric current* 2 Force on a current-carrying conductor in a magnetic field* 6 Faraday

### EXPERIMENT 11: FARADAY S LAW OF INDUCTION

LAB SECTION: NAME: EXPERIMENT 11: FARADAY S LAW OF INDUCTION Introduction: In this lab, you will use solenoids and magnets to investigate the qualitative properties of electromagnetic inductive effects

### University of TN Chattanooga Physics 1040L 8/28/2012

PHYSICS 1040L LAB 5: MAGNETIC FIELD Objectives: 1. Determine the relationship between magnetic field and the current in a solenoid. 2. Determine the relationship between magnetic field and the number of

### Chapter 22: Electric motors and electromagnetic induction

Chapter 22: Electric motors and electromagnetic induction The motor effect movement from electricity When a current is passed through a wire placed in a magnetic field a force is produced which acts on

### 2 Principles of d.c. machines

2 Principles of d.c. machines D.C. machines are the electro mechanical energy converters which work from a d.c. source and generate mechanical power or convert mechanical power into a d.c. power. These

### Permanent Magnet DC Motor Operating as a Generator

Exercise 2 Permanent Magnet DC Motor Operating as a Generator EXERCIE OBJECTIVE When you have completed this exercise, you will be familiar with the construction of permanent magnet dc motors as well as

### 25 B43 B43.1 THE MEASUREMENT OF e/m BY THE BAINBRIDGE METHOD

25 B43 B43.1 THE MEASUREMENT OF e/m BY THE BAINBRIDGE METHOD OBJECT The object of this experiment is to use the Bainbridge method to determine the electron chargeto-mass ratio. DESCRIPTION OF APPARATUS

### Section 1: Magnets and Magnetic Fields Section 2: Magnetism from Electric Currents Section 3: Electric Currents from Magnetism

Section 1: Magnets and Magnetic Fields Section 2: Magnetism from Electric Currents Section 3: Electric Currents from Magnetism Key Terms Magnetic Poles Magnetic Fields Magnets The name magnet comes from

### Handout Activity: HA773

Charging system HA773-2 Handout Activity: HA773 Charging system The charging system allows for a means to recharge the battery and allow for electrical usage of components in the vehicle. The charging

### Lecture 20: Stator Control - Stator Voltage and Frequency Control

Lecture 20: Stator Control - Stator Voltage and Frequency Control Speed Control from Stator Side 1. V / f control or frequency control - Whenever three phase supply is given to three phase induction motor

### Chapter 7. Magnetic Fields. 7.1 Purpose. 7.2 Introduction

Chapter 7 Magnetic Fields 7.1 Purpose Magnetic fields are intrinsically connected to electric currents. Whenever a current flows through a wire, a magnetic field is produced in the region around the wire.

### Fundamental Training. Flow Con t

Fundamental Training Flow Con t 1 Contents Topics: Slide No: Velocity flow meters 3-11 Mass flow meters 12-17 Displacement meters 18 Exercise 19-20 2 Velocity Meter Magnetic Flowmeter Faraday s Law of

### IMPACT OF SKIN EFFECT FOR THE DESIGN OF A SQUIRREL CAGE INDUCTION MOTOR ON ITS STARTING PERFORMANCES

IMPACT OF SKIN EFFECT FOR THE DESIGN OF A SQUIRREL CAGE INDUCTION MOTOR ON ITS STARTING PERFORMANCES Md. Shamimul Haque Choudhury* 1,2, Muhammad Athar Uddin 1,2, Md. Nazmul Hasan 1,2, M. Shafiul Alam 1,2

### CHAPTER 8: ELECTROMAGNETISM

CHAPTER 8: ELECTROMAGNETISM 8.1: MAGNETIC EFFECT OF A CURRENT-CARRYING CONDUCTOR Electromagnets 1. Conductor is a material that can flow.. current 2. Electromagnetism is the study of the relationship between.and

### Permanent Magnet DC Motor

Renewable Energy Permanent Magnet DC Motor Courseware Sample 86357-F0 A RENEWABLE ENERGY PERMANENT MAGNET DC MOTOR Courseware Sample by the staff of Lab-Volt Ltd. Copyright 2011 Lab-Volt Ltd. All rights

### Imagine not being able to use anything that plugs into an electrical socket.

Physics 1003 Electromagnetism (Read objectives on screen.) (boy thinking on screen) Imagine your everyday life without talking on the telephone or watching TV. or listening to a radio or playing a CD.

### Chapter 28. Direct Current Circuits

Chapter 28 Direct Current Circuits Direct Current When the current in a circuit has a constant magnitude and direction, the current is called direct current Because the potential difference between the

### Chapter 31. Faraday s Law

Chapter 31 Faraday s Law C HAP T E O UTL E 311 Faraday s Law of nduction 312 Motional emf 313 Lenz s Law 314 nduced emf and Electric Fields 315 Generators and Motors 316 Eddy Currents 317 Maxwell s Equations

### Magnetism and Electricity ASSIGNMENT EDULABZ. the mere presence of magnet, is called...

Magnetism and Electricity ASSIGNMENT 1. Fill in the blank spaces by choosing the correct words from the list given below. List : magnetic field, magnetic keepers, electric bell, stop, magnetic induction,

### MAGNETIC FIELD DUE TO A CURRENT CARRYING CONDUCTOR

Magnetic Field due to a Current through a Straight Conductor 1. A current carrying straight conductor behaves as a magnet. The direction of the magnetic field is given by the Right-Hand Thumb Rule. The

### Alternating Current Machines SAMPLE. Learner Workbook. Version 1. Training and Education Support Industry Skills Unit Meadowbank. Product Code: 5633

Learner Workbook Version 1 Training and Education Support Industry Skills Unit Meadowbank Product Code: 5633 Contents Introduction... 5 Section 1: Operating Principles of Three-Phase Induction Motors.7

### Lecture 15 Motor Controls & Drives

ECE 211 Lectures Page 1 Lecture 15 Motor Controls & Drives Tuesday, July 29, 2014 1:00 PM DC Motors and Control Circuits Types of DC Motors Shunt Motors Series Motors Compound Motors Permanent Magnet Motor

### Civil Engineering Hydraulics. Radial Flow Devices

Civil Engineering Hydraulics 2 3 Many rotary-flow devices such as centrifugal pumps and fans involve flow in the radial direction normal to the axis of rotation and are called radial- flow devices. 4 In

### DC Choppers Applications in DC motor Drives and Renewable Energies. Part I- Electric DC Motor Drives

Electrical Engineering Division Page 1 of 10 DC Choppers Applications in DC motor Drives and Renewable Energies Many industrial applications need a conversion of a voltage coming from a DC source into

### The Magnetic Field in a Slinky

The Magnetic Field in a Slinky A solenoid is made by taking a tube and wrapping it with many turns of wire. A metal Slinky is the same shape and will serve as our solenoid. When a current passes through

### Autonomous Mobile Robot Design

Autonomous Mobile Robot Design Topic: Propulsion Systems for Robotics Dr. Kostas Alexis (CSE) Propulsion Systems for Robotics How do I move? Understanding propulsion systems is about knowing how a mobile

### Application Information

Moog Components Group manufactures a comprehensive line of brush-type and brushless motors, as well as brushless controllers. The purpose of this document is to provide a guide for the selection and application

### Solenoid Switch. Purpose To demonstrate electromagnetism and to explore terminology associated with magnets and electromagnets.

Experiment D Solenoid Switch Purpose To demonstrate electromagnetism and to explore terminology associated with magnets and electromagnets. To introduce Lenz s law and Faraday s law. To discover terms

### Fachpraktikum Elektrische Maschinen. Theory of Induction Machines

Fachpraktikum Elektrische Maschinen Theory of Induction Machines Prepared by Arda Tüysüz January 2013 Fundamentals Induction machines (also known as asynchronous machines) are by far the most common type

### Photographs of large cities, such as Seattle, Washington, are visible reminders of how much people rely on electrical energy.

Photographs of large cities, such as Seattle, Washington, are visible reminders of how much people rely on electrical energy. Generating Electric Current How is voltage induced in a conductor? According

### Renewable Energy Systems 13

Renewable Energy Systems 13 Buchla, Kissell, Floyd Chapter Outline Generators 13 Buchla, Kissell, Floyd 13-1 MAGNETISM AND ELECTROMAGNETISM 13-2 DC GENERATORS 13-3 AC SYNCHRONOUS GENERATORS 13-4 AC INDUCTION

### EE6352-ELECTRICAL ENGINEERING AND INSTRUMENTATION UNIT I D.C. MACHINES PART A

EE6352-ELECTRICAL ENGINEERING AND INSTRUMENTATION 1. What is prime mover? UNIT I D.C. MACHINES PART A The basic source of mechanical power which drives the armature of the generator is called prime mover.

### The Magnetic Field. Magnetic fields generated by current-carrying wires

OBJECTIVES The Magnetic Field Use a Magnetic Field Sensor to measure the field of a long current carrying wire and at the center of a coil. Determine the relationship between magnetic field and the number

### D.C. Generators. Chapter (1) Introduction. 1.1 Generator Principle. 1.2 Simple Loop Generator

Chapter (1) D.C. Generators Introduction Although a far greater percentage of the electrical machines in service are a.c. machines, the d.c. machines are of considerable industrial importance. The principal

### Creative Engineers Inc. Pittsburgh, PA York, PA Phoenix, MD P.O. Box 206 Phoenix, MD Phone (443)

Creative Engineers Inc. Pittsburgh, PA York, PA Phoenix, MD P.O. Box 206 Phoenix, MD 21131 Phone (443) 807-1202 info@creativeengineers.com www.creativeengineers.com MAGNETIC FLOWMETERS Creative Engineers

### Electricity was somehow being induced by the magnetic field of the first coil in the second coil.

AP Physics Induction Not too many years ago the word induction meant the draft as in Uncle Sam and the army. Well, fortunately for some - although the Physics Kahuna thinks that mandatory serice for your

### 2006 MINI Cooper S GENINFO Starting - Overview - MINI

MINI STARTING SYSTEM * PLEASE READ THIS FIRST * 2002-07 GENINFO Starting - Overview - MINI For information on starter removal and installation, see the following articles. For Cooper, see STARTER WITH

### Efficiency Increment on 0.35 mm and 0.50 mm Thicknesses of Non-oriented Steel Sheets for 0.5 Hp Induction Motor

International Journal of Materials Engineering 2012, 2(2): 1-5 DOI: 10.5923/j.ijme.20120202.01 Efficiency Increment on 0.35 mm and 0.50 mm Thicknesses of Non-oriented Steel Sheets for 0.5 Hp Induction

### Fig Electromagnetic Actuator

This type of active suspension uses linear electromagnetic motors attached to each wheel. It provides extremely fast response, and allows regeneration of power consumed by utilizing the motors as generators.

### Rosemount 8750WA Magnetic Flowmeter System For Water and Wastewater Industries

Product Data Sheet January 214 813-1-475, Rev FA Rosemount 875WA Magnetic Flowmeter System For Water and Wastewater Industries THE 875WA MAGNETIC FLOWMETER Rosemount reliability in a customized offering

### The Magnetic Field in a Coil. Evaluation copy. Figure 1. square or circular frame Vernier computer interface momentary-contact switch

The Magnetic Field in a Coil Computer 25 When an electric current flows through a wire, a magnetic field is produced around the wire. The magnitude and direction of the field depends on the shape of the

### 21.2 Electromagnetism

In 1820 Hans Oersted discovered how magnetism and electricity are connected. A unit of measure of magnetic field strength, the oersted, is named after him. Electricity and Magnetism How can an electric

### Figure 4.1.1: Cartoon View of a DC motor

Problem 4.1 DC Motor MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Electrical Engineering and Computer Science 6.007 Applied Electromagnetics Spring 2011 Problem Set 4: Forces and Magnetic Fields

### Magnets and magnetism

Chapter 2 Electromagnetism Section 1 Magnets and magnetism Vocabulary: magnet magnetic pole magnetic force Properties of Magnets Magnetic Poles on a magnet, the magnetic poles are the locations where the

### UNIT I D.C. MACHINES PART A. 3. What are factors on which hysteresis loss? It depends on magnetic flux density, frequency & volume of the material.

EE6352-ELECTRICAL ENGINEERING AND INSTRUMENTATION UNIT I D.C. MACHINES PART A 1. What is prime mover? The basic source of mechanical power which drives the armature of the generator is called prime mover.

### Development of High-Speed AC Servo Motor

1 / 5 SANYO DENKI TECHNICAL REPORT No.11 May-2001 Feature Development of High-Speed AC Servo Motor Shintarou Koichi Koujirou Kawagishi Satoru Onodera 1. Introduction Higher speed and higher acceleration

### EARTH S MAGNETIC FIELD

Course and Section Date Names EARTH S MAGNETIC FIELD Short description: In this experiment, you will produce a magnetic field in the coil BCOIL and combined it with the Earth magnetic field BEARTH. Looking

### Design and Modeling of Fluid Power Systems ME 597/ABE 591

Systems ME 597/ABE 591 Dr. Monika Ivantysynova MAHA Professor Flud Power Systems MAHA Fluid Power Research Center Purdue University Systems Dr. Monika Ivantysynova, Maha Professor Fluid Power Systems Mivantys@purdue.edu

### English for Electrical Engineers

University of Kurdistan Department of Electrical & Computer Engineering English for Electrical Engineers H. Bevrani October, 2017 1 Contents Unit 1. Current, voltage and resistance... 3 Unit 2. Electrical

### Principles and types of analog and digital ammeters and voltmeters

Principles and types of analog and digital ammeters and voltmeters Electrical voltage and current are two important quantities in an electrical network. The voltage is the effort variable without which

### A New Design of Permanent Magnets Reluctance Generator Andi Pawawoi, Syafii

A New Design of Permanent Magnets Reluctance Generator Andi Pawawoi, Syafii Abstract Instantaneous electromagnetic torque of simple reflectance generator can be positive at a time and negative at other

### Electromagnetic Braking

I J C T A, 9(37) 2016, pp. 563-567 International Science Press Electromagnetic Braking An Innovative Approach Abhay Singh Rajput * and Utkarsh Sharma ** Abstract: This paper focuses on use of electromagnetic

### Power Generation in battery Using A Shock Absorber.

Power Generation in battery Using A Shock Absorber. Group Member : Patel Sajan D. 110780119037 Raval Parthiv A. 120783119009 Rajput Kalpesh. 120783119016 Tapodhan Ravi N. 120783119034 Internal Guide:-

### A Practical Guide to Free Energy Devices

A Practical Guide to Free Energy Devices Part PatD11: Last updated: 3rd February 2006 Author: Patrick J. Kelly Electrical power is frequently generated by spinning the shaft of a generator which has some

### Pan Hao Co., Ltd. How to operate IGBT modules in parallel properly

Pan Hao Co., Ltd How to operate IGBT modules in parallel properly 1 How to operate IGBT modules in parallel properly Low inductive DC-link design Choice of right Snubber Low inductive and symmetrical AC-Terminal

### Science Part B Chapter 4- Electrical Energy. Lesson 1-

Science Part B Chapter 4- Electrical Energy Lesson 1- Most atoms have equal numbers of protons, which are positively charged, and electrons, which are negatively charged. These atoms have no charge; they

### Batteries n Bulbs: Voltage, Current and Resistance (8/6/15) (approx. 2h)

Batteries n Bulbs: Voltage, Current and Resistance (8/6/15) (approx. 2h) Introduction A simple electric circuit can be made from a voltage source (batteries), wires through which current flows and a resistance,

### DERATING OF THREE-PHASE SQUIRREL-CAGE INDUCTION MOTOR UNDER BROKEN BARS FAULT UDC : Jawad Faiz, Amir Masoud Takbash

FACTA UNIVERSITATIS Series: Automatic Control and Robotics Vol. 12, N o 3, 2013, pp. 147-156 DERATING OF THREE-PHASE SQUIRREL-CAGE INDUCTION MOTOR UNDER BROKEN BARS FAULT UDC 621.313.33:621.316.1.017 Jawad

### DESIGN OF COMPACT PERMANENT-MAGNET SYNCHRONOUS MOTORS WITH CONCENTRATED WINDINGS

DESIGN OF COMPACT PERMANENT-MAGNET SYNCHRONOUS MOTORS WITH CONCENTRATED WINDINGS CSABA DEAK, ANDREAS BINDER Key words: Synchronous motor, Permanent magnet, Concentrated winding. The design and comparison

### Evaluation copy. The Magnetic Field in a Slinky. computer OBJECTIVES MATERIALS INITIAL SETUP

The Magnetic Field in a Slinky Computer 26 A solenoid is made by taking a tube and wrapping it with many turns of wire. A metal Slinky is the same shape and will serve as our solenoid. When a current passes