Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -1 Basic Electrical Components

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -2 Highlights of Elements of Electrical Engineering 1 st B.Tech Course Academic Year Section-H

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -3 UNIT –I: Basic Electrical Components Definition of charge, electric potential, electric field, voltage, current, power and energy Coulombs law, Classification of resistors, colour code, Effect of temperature on resistance, Thermistors, Sensistors, Classification of capacitors, dielectric constant, dielectric strength, properties of capacitor, Capacitors connected in series and parallel, Energy stored in capacitor, Inductors, Properties of inductors, Self Inductance, mutual inductance, Dot Convention, coefficient of coupling, Inductors connected in series and parallel, Stored energy in an inductor. (15 Hours) UNIT –II: Fundamentals of Electrical Circuits DC Circuits:Concept of electricity, Classification of network elements – Active and Passive elements, Ohm’s law, Kirchhoff’s laws, resistive networks, Voltage and current division rule, mesh and nodal analysis, Star-delta transformation. AC Circuits:Generation of alternating current, periodic waveforms and basic definitions, root mean square and average values of alternating currents and voltages, form factor and peak factor, ac through pure R, L and C, Phasor concepts. (16 hours) UNIT-III: Electro Magnetic Induction Basic definitions, analogy between electric and magnetic circuits, B-H curve, Faradays laws of electromagnetic induction, Types of induced e.m.f’s. Basic Concepts of Electrical Machines: DC Machines, Transformers, 3-Phase Induction Motors and Alternators: Principles of operation, Construction, Applications. (16 hours) UNIT-IV : Semiconductor Devices – Diodes: Electrical properties of semiconductor materials, energy level diagrams of conductor, semiconductor and Insulator. Formation of P-Type and N-Type materials and their properties. Drift and diffusion current. Formation and behaviour of PN junction diode and its V-I characteristics. Safety Devices and Practices: Electric shock and its effects, Protective measures of electric shock, Purpose of earthing. B.Tech Degree Course structure

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -4 Exam Schedule ComponentDuration (minutes) Marks% of weightageDate & TimeVenue Sessional Test – (Best 2 tests average) 20/10/2014 to 25/10/ to AM Block-5 Sessional Test – /12/2014 to 6/12/ to AM Block-5 Sessional Test – /01/2015 to 24/01/ to AM Block-5 Comprehensiv e Quiz Examination /01/2015 to 24/01/ AM to 5.00 PM CC Lab/ MCA Lab Semester End Examination /02/2015 to 14/02/ AM to 1.00 PM Block 1/2/3/4/5/6

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -5 Conductors 1.What is Conductor? A substance which offers low resistance to the flow of current is called conductor. 2.What are the properties of conductor? 3.Classification of Conductor? (i).Bare Conductors (ii).Insulated Conductors 4.What is the difference between wire and cable? Any conductor which is composed of a conducting material, and is uniform in diameter and circular in cross section is called wire A length of insulated conductor or two or more such conductors, each provided with its own insulation

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise GMR Institute of Technology, Rajam 6 22-Nov-15 What is the difference between stranded conductor and solid conductor

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise GMR Institute of Technology, Rajam 7 22-Nov-15 Nature of Electricity and Fundamentals Types of Electricity(Static and Dynamic)

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -8 Electronic Theory

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -9 Haphazard Movement of Electrons

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -10 Definition of Charge Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There are two types of electric charges: positive and negative. The steady state flow of electrons under the constant PD is called Electron Drift

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -11

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise GMR Institute of Technology, Rajam Nov-15

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -13 In a direct current (DC) electrical circuit, the voltage (V in volts) is an expression of the available energy per unit charge which drives the electric current (I in amperes) around a closed circuit. Increasing the resistance (R in ohms) will proportionately decrease the current which may be driven through the circuit by the voltage.Each quantity and each operational relationship in a battery-operated DC circuit has a direct analog in the water circuit. The nature of the analogies can help develop an understanding of the quantities in basic electric ciruits. In the water circuit, the pressure P drives the water around the closed loop of pipe at a certain volume flowrate F. If the resistance to flow R is increased, then the volume flowrate decreases proportionately. You may click any component or any relationship to explore the the details of the analogy with a DC electric circuit What is the analogy between Electricity and water

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise GMR Institute of Technology, Rajam Nov-15

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise GMR Institute of Technology, Rajam Nov-15

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise GMR Institute of Technology, Rajam Nov-15

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise GMR Institute of Technology, Rajam Nov-15

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise GMR Institute of Technology, Rajam Nov-15

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise GMR Institute of Technology, Rajam Assignment -1 What is Electrical Power and to measure it? What is Electrical Energy and how to measure it? What are the symbols used for resistor, inductor and capacitor? What is inductance/reactance/capacitence/resistan ce? Nov-15

Department of Mechanical Engineering HumilityEntrepreneurshipTeamwork LearningSocial ResponsibilityRespect for Individual Deliver The Promise BS&H, GMR Institute of Technology, Rajam Page -20 Thank you