Laboratory report 1 title: electromagnetic induction lab
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FACULTY OF ENGINEERING AND TECHNOLOGY. DEPARTMENT OF MECHANICAL AND AUTOMOTIVE ENGINEERING. DIPLOMA IN MARINE ENGINEERING. SECOND YEAR/SECOND SEMESTER (2.2) EMR: 2224 LABORATORY REPORT 1 TITLE: ELECTROMAGNETIC INDUCTION LAB. BY; ABDALLAH MOHAMMED DMAE/248J/2021. LECTURER: MR OPOLE TECNOLOGIST: MR WILLIAM FEKLIN MASHA INTRODUCTION Electromagnetic or magnetic induction is referred to as the production of an electromotive force across an electrical conductor in a charged magnetic field. In other words, it can say to be the creation of an electro-motive force (EMF) by moving magnetic field around an electric conductor. The importance of this practical is to make me understand further the principles of electromagnetic conduction and how strong or weak it is with different numbers of winding turns. OBJECTIVES To observe how current can create a magnetic field. To appreciate Fleming’s Right-hand rule. To observe how the number of turns of the coil affects the strength of magnetic field. APPARATUS USED Insulated thin transformer wire. Nails/Conductors (4 inch) Dc power supply Rheostat Paper clips BACKGROUND THEORY Electromagnetic or magnetic induction is referred to as the creation of an electro-motive force (EMF) by moving magnetic field around an electric conductor. The importance of this practical is to make me understand further the principles of electromagnetic conduction and how strong or weak it is with different numbers of winding turns. When a conductor is wounded, then induced with current, it tends to produce magnetic field hence magnetic forces are experienced at the ends of conductor. Therefore, in this practical, our major focus is on the strength of the induced conductor in various numbers of turns. PROCEDURE Wrap the wire tightly around the nail to make a solenoid with ferromagnetic core. Is advisable to wrap more than one layer. Strip an inch of insulation off at the ends of the wire. Try and pick up some paper clips and count the number of turns as shown: Connect the circuit as shown below: RHEOSTAT -A+ DC SUPPLY Try to pick up some paper clips. Count the number of papers clips the electromagnet can pick depending on the number of turns. Change the number of coils and observe what happens.
OBSERVATION A magnetic field is produced whenever an electric charge is in motion. A magnetic field is generated by an electrical current and when the atom spins and orbits the nuclear. The direction of the orbit determines the direction of the magnetic field hence the Flemings Right Hand Rule come to existence in such a scenario. It is quite clear that the smaller number of turns has less electromagnet force, therefore, less pins will be carried by the electromagnet induction. When the number of turns is increased, the electromagnet force increases hence more pins are carried. ANALYSIS It is clear that whenever the turns are increased, a strong magnetic force is created hence more paper pins are carried by the induced conductor. The fewer the turns, the weaker the electromagnet, the more the turns, the stronger the electromagnet. CONLUSSION An induced conductor develops a magnetic field which attracts magnetic materials, in our practical, is the paper pins. The more the number of turns is increased, the field becomes stronger. RECOMMENDATIONS The practical was a successful one since all the required materials were available at the lab. It is better if the electrical department will give us much time to spend on the lab projects so as we can be more conversant with the lab projects at our course work level. APPLICATIONS The electromagnet force created by the induced conductor can be used to make motors and rotors in generator mechanism when the same knowledge is used appropriate. REFFERENCES Electrical engineering-know it al-l by John Bird. | Page Download 137.5 Kb. Share with your friends:
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