34.Single Phase Induction Motor…………………………………95 35.DC Motor……………………………………………………….97
GOKARAJU RANGARAJU INSTITUTE OF ENGG AND TECHNOLOGY (AUTONOMOUS) ACADEMIC YEAR 2014-15, Semester-I/II BASIC ELECTRICAL ENGINEERING (BEE) Sub code: GR14 Regulation L T P C 3 2 0 4 PreRequities : Fundamental in Engineering Mathematics and Physics Course Objectives: BEE (Basic Electric Engineering) is common to first year branches of UG Engineering(expect BT). At the end of the course the student is expected to 1. Know the fundamental of Electrical Engineering and practical. 2. Practical implementation of fundamental theory concepts. Course Outcomes : 1. Students will learn strong basics of Electrical Engineering and practical implementation of Electrical fundamentals. 2. Students will learn different applications of commonly used electrical machinery UNIT 1: Basic Laws: Ohm’s law, Kirchhoff’s voltage and current laws, Nodes-Branches and loops, Series elements and Voltage Division, Parallel elements and Current Division, Star-Delta transformation, Independent sources and Dependent sources, source transformation. UNIT 2: AC Fundamentals-I: Reviews of Complex Algebra, Sinusoids, phasors, Phasor Relations of circuit elements, Impedance and admittance, Impedance Combinations, Series and Parallel combination of Inductors and capacitor, Mesh analysis and Nodal analysis . UNIT 3: AC Fundamental-II: RMS and average values, Form factors, Steady state Analysis of series, Parallel and Series Parallel combination of R,L,C with Sinusoidal excitation, Instantaneous power, Real power, Reactive power and Apparent power, concept of Power factor, Frequency. UNIT 4: Network Theorems and Resonance: Superposition theorem, Thevinin’s theorem, Nortorn’s theorem, Maximum Power Transfer Theorem, Reciprocity theorem, Resonance in Electrical circuits: Analysis of series and parallel Resonance. UNIT 5: Fundamentals of Electrical Machines: Construction, Principle, Operation and Application of –(i) Single phase Transformer (ii) Single phase Induction motor (iii) DC Motor.
TEXTBOOK: 1. Fundamentals of Electrical Circuits by Charles k.Alexander, Mattew N.O.Saidiku, Tata McGraw Hill company. Reference Book: 1.Circuit theory(Analysis and Synthesis) by A. Chakrabarti-Dhanpat Rai&Co. 2.Network Theory by Prof.B.N.Yoganarasimham. 3. Circuit Theory by Sudhakar and ShyamMohan. 4.Electrical Machines-I by B.I.Theraja.
UNIT 1: Basic Laws: Ohm’s law, Kirchhoff’s voltage and current laws, Nodes-Branches and loops, Series elements and Voltage Division, Parallel elements and Current Division, Star-Delta transformation, Independent sources and Dependent sources, source transformation. OHM’S LAW At constant temperature, the current flowing through a conductor is directly proportional to the potential difference(p.d) in volts across the two ends of the given conductor and inversely proportional to the resistance (R) in ohms (Ω) between the ends of the same conductor. µ / µ In all practical problems of electrical calculations, it is assumed that the temperature rise is within limits, so that electrical properties such as insulation and conduction properties of the . ℎ ’ ℎ = / = = = = / A Solved Examples: 1. An electrical iron carrying 2A at 120V. Find resistance of the device? = ( / ) = 120/2 = 60 Soln : 2. The essential component of a toaster is an electrical element (a resistor) that converts electrical energy to heat energy. How much current is drawn by a toaster with resistance 12 at 110V? Soln: 9.167 A 3. In the given circuit, calculate current I, the conductance G and the power P? Soln: i= G= = 6mA = 0.2m mhos P = VI = I R = 180mW