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**Jawaharlal Nehru Technological University Anantapur (JNTU) College of Engineering (CEP), Pulivendula, Pulivendula, Andhra Pradesh, India - JNTUACEP**- 2 Topics
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PRINCIPLES OF ELECTRICAL ENGINEERING

Principles of Electrical Engineering Contents CONTENTS Lab. Dated No. List of Experiments Page No. 1 Introduction to the measuring methods of Resistance and Capacitance. 1-8 2 To verify the following two equivalent forms of Ohm’s Law: (a) Express I as a function of V and R. (b) Express V as a function of I and R. 9-13 3 To investigate the characteristics of a series DC circuit. 14-19 4 To investigate the characteristics of a parallel DC circuit. 20-24 5 To verify experimentally Voltage and Current laws. 6 To become familiar with Star/Delta conversion and calculate power dissipated in each configuration. 30-35 7 To verify superposition principle in DC circuits. 36-40 8 To determine by analysis the values VTH (Thevenin voltage) and RTH (Thevenin resistance) in a dc circuit containing a single 4 1 - 4 6 voltage source. Also obtain the voltage across and current passing through RL. Kirchhoff’s Remarks 25-29 Revised 2013 IAA

Principles of Electrical Engineering Contents 9 To verify Norton’s Theorem and the theory of source transformation. 47-53 10 To note the effect of frequency on basic R, L and C components. 54-60 11 i. To verify experimentally that the impedance Z of a series RL circuit is given by the equation: Z = √( R 2 + X 2 ) ii. To measure the phase angle ‘θ’ between voltage V and the current I. iii. To verify experimentally that following expression hold true for the RL circuit. 61-68 V = VR + jVL… (vector sum). V = √ ( VR 2+ VL2). (Magnitude). VR = V cos θ. VL = V sin θ. 12 To study the working of a transformer. 69-71 13 To study the Construction of DC Machine (Parts of DC Machine) 72-76 14 To determine and compare the characteristics of DC Shunt Generator and DC separately-excited generator. 77-80 15 To study The Three Phase AC induction motors and their parts. 81-88 16 To verify double field revolving theory with the help of single phase induction motor. 89-91 Revised 2013 IAA

Measuring methods for R and C LAB SESSION 01 OBJECTIVE: Introduction to the Measuring Methods of Resistance and Capacitance EQUIPMENTS REQUIRED: Different Valued Resistors, Capacitors VOM (Volt-OhmMilliammeter) DMM (Digital Multimeter) THEORY & PROCEDURE: NOTE: The purpose of this experiment is to acquaint you with the equipment, so do not rush. Learn how to read the meter scales accurately, and take your data carefully. You must become comfortable with the instruments if you expect to perform your future job function in a professional manner. “Part 1: Resistance Measurement” METHOD 1 : Resistance Measurement using VOM/ DMM: 1. Resistance is never measured by an ohm-meter in a live network, due to the possibility of damaging the meter with excessively high currents and obtaining readings that have no meaning. 2. Always start with the highest range of the instrument and switch down to the proper range successively. 3. Use the range in which the deflection falls in the upper half of the meter scale. 4. Try to ascertain the polarity of dc voltages before making the measurement. 5. Whenever measuring the resistance of a resistor in a circuit, note whether there 1

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