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Chhalotra, PhD MERCURY LEARNING AND INFORMATION Dulles, Virginia Boston, Massachusetts New Delhi Electrical_Engineering_Experiments_2nd-Pass_00.indd 3 20/11/17 9:21 AM Copyright ©2018 by Mercury Learning and Information LLC. All rights reserved. Original Title and Copyright: Experiments in Electrical Engineering. ©2015 by Khanna Publishers. This publication, portions of it, or any accompanying software may not be reproduced in any way, stored in a retrieval system of any type, or transmitted by any means, media, electronic display or mechanical display, including, but not limited to, photocopy, recording, Internet postings, or scanning, without prior permission in writing from the publisher. Publisher: David Pallai Mercury Learning And Information 22841 Quicksilver Drive Dulles, VA 20166 [email protected] www.merclearning.com (800) 232-0223 G.P. Chhalotra. Electrical Engineering Experiments. 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The sole obligation of Mercury Learning and Information to the purchaser is to replace the book, based on defective materials or faulty workmanship, but not based on the operation or functionality of the product. Electrical_Engineering_Experiments_2nd-Pass_00.indd 4 20/11/17 9:21 AM CONTENTS Experiment 1 1–4 To Determine Internal Resistance of a Battery 1 Experiment 2 5–8 Load Test on a D.C. Series Generator 5 Experiment 3 9–12 Load Test on a D.C. Series Motor 9 Experiment 4 13–18 Load Test on a D.C. Shunt Motor 13 Experiment 5 19–22 Load Test on a D.C. Shunt Generator 19 Experiment 6 23–28 Load Test on a D.C. Compound Motor 23 Experiment 7 29–32 Load Test on a D.C. Compound Generator 29 Experiment 8 33–36 No-Load Test on a Separately Excited D.C. Generator (Magnetization Characteristic) 33 Electrical_Engineering_Experiments_2nd-Pass_00.indd 5 20/11/17 9:21 AM vi • ELECTRICAL ENGINeeRING EXPERIMENTS Experiment 9 37–40 No-Load Test on a D.C. Shunt Generator (Magnetization Characteristic) 37 Experiment 10 41–46 No-Load Test on a D.C. Shunt Motor (Swinburne Test) 41 Experiment 11 47–50 To Perform a Hopkinson Test on Two Identical D.C. Shunt Machines 47 Experiment 12 51–56 Open-Circuit Test and Short-Circuit Test on a Single-Phase Transformer 51 Experiment 13 57–60 Load Test on a Single-Phase Transformer 57 Experiment 14 61–64 Back-to-Back Test on Two Identical Transformers (Sumpner Test) 61 Experiment 15 65–68 Separation of Losses in a Single-Phase Transformer (Separation of Eddy Current and Hysteresis Loss) 65 Experiment 16 69–72 Separation of Losses in a D.C. Shunt Motor 69 Experiment 17 73–78 To Perform a Load Test on a Three-Phase Slip-Ring Induction Motor 73 Experiment 18 79–84 To Perform a No-Load and Blocked Rotor Test on a Three-Phase Squirrel Cage Induction Motor 79 Experiment 19 85–90 No-Load Test and Short-Circuit Test on a Three-Phase Alternator 85 Electrical_Engineering_Experiments_2nd-Pass_00.indd 6 20/11/17 9:21 AM CONTENTS • vii Experiment 20 91–94 A Load Test on a Three-Phase Synchronous Generator 91 Experiment 21 95–98 To Determine Regulation of a Three-Phase Alternator at Full Load, Lagging Power Factor, and Leading Power Factor 95 Experiment 22 99–102 To Determine the V-Curve and Inverted V-Curve of a Synchronous Motor 99 Experiment 23 103–108 To Determine Regulation of a Three-Phase Alternator for Full Load at a Power Factor Using the Zero Power Factor Method or the Potier Triangle Method 103 Experiment 24 109–112 To Determine the Regulation of a Three-Phase Alternator at a Load and Its Power Factor by the MMF Method 109 Experiment 25 113–120 To Measure the Iron Loss at Different Flux Densities with a Lloyd Fisher Magnetic Square 113 Experiment 26 121–124 Study of Overcurrent Relay (I.D.M.T. Type) and Determination of the Time-Current Characteristic 121 Experiment 27 125–126 Study of the Instantaneous Relay and Determination of the Pickup and Reset Values 125 Experiment 28 127–130 Study of the Directional Overcurrent Relay 127 Experiment 29 131–134 Study of the Percentage Differential Relay 131 Electrical_Engineering_Experiments_2nd-Pass_00.indd 7 20/11/17 9:21 AM viii • ELECTRICAL ENGINeeRING EXPERIMENTS Experiment 30 135–140 To Plot Burden Current Characteristics of the Given Current Transformers 135 Experiment 31 141–146 For the Given Current Transformer and Burden to Find the Ratio and Phase Angle Error at: (a) 100% Rated Current and (b) 50% Rated Current by the Mutual Inductance (Absolute) Method 141 Experiment 32 147–152 To Plot the Power-Angle Curve of a Three-Phase Salient Pole Synchronous Generator 147 Experiment 33 153–156 Determination of Xd and Xq by Slip Test 153 Experiment 34 157–162 To Study the Effect of the Brush Separation and Brush Shift on the Speed and Power Factor of the Schrage Motor 157 Experiment 35 163–168 To Plot Magnetization Characteristics and Load Characteristics of Metadyne Generators 163 Experiment 36 169–172 To Plot the Magnetization Characteristic and Load Characteristic of an Amplidyne Generator 169 Experiment 37 173–176 To Determine Negative Sequence and Zero Sequence Reactions of a Synchronous Machine 173 Experiment 38 177–182 To Determine Parameters of a Single-Phase Induction Motor 177 Experiment 39 183–186 Measurement of a Small Resistance by Kelvin’s Double Bridge 183 Electrical_Engineering_Experiments_2nd-Pass_00.indd 8 20/11/17 9:21 AM CONTENTS • ix Experiment 40 187–190 Calibration of a Watt-Hour Meter by a Standard Wattmeter 187 Experiment 41 191–192 Calibration of A.C. Wattmeter by a Standard Voltmeter and Ammeter 191 Experiment 42 193–194 Calibration of an Ampere-Hour Meter by a Standard Ammeter 193 Experiment 43 195–198 To Find an Unknown Inductance with Hay’s Bridge 195 Experiment 44 199–202 To Determine a Value of High Resistance by the Loss of Charge Method 199 Experiment 45 203–206 Calibration of a Wattmeter and Ammeter by Crompton’s Potentiometer 203 Experiment 46 207–212 Study of an Impulse Generator (1.6 Million Volts) 207 Experiment 47 213–218 To Determine the Breakdown