THEORY : The air-gap induced emf in an ac machine is given by (in Watts) = Wattmeter Reading*M.F Short circuit current=Ammeter reading= I sc Voltmeter Reading = V sc Copper loss = Wattmeter Reading =W sc Calculate the values of R 01, X 01, Z 01. 3. OBJECTIVE : To study the speed control of induction motor by varying supply frequency (V/f control). High blood pressure or hypertension affects more people than one can possibly think. C TEST 1. 5. The readings of the total power input are Wo, Io and voltage V are plotted. All the connections should be tight and clean. 2. Gradually increase the supply voltage in steps. Total Page 52 . 2 sumpners test. 1 open circuit & short circuit test on a single phase transformer . > Electric Machinery by A. E. Fitzgerald (Sixth Edition) > > Electric Machines Analysis and Design Applying MATLAB by Jim Cathey (Chapter 2-7) > > Engineering Mechanics Dynamics Volume 2 by J. L. Meriam, L. G. Kraige (5th edition) > > Electric Machinery Fundamentals 4e by Stephen J Chapman > Electrical machines 2 lab manual 1. Make the connections as per the circuit diagram. Tech I Semester (JNTUA-R15) Mr. K. Raju,Assistant Professor CHADALAWADA RAMANAMMA ENGINEERING COLLEGE (AUTONOMOUS) Chadalawada Nagar, Renigunta Road, Tirupati – 517 506 Department of Electrical and Electronics Engineering 1. The transformer works on the principle of electromagnetic induction between two windings placed on a common magnetic circuit. A.C. Electrical Machines Lab GRIET/E.E.E. B.E Electrical and Electronics Engineering Lab Manual Anna University Regulation 2017 Students of Regulation 2017 can download the EEE Lab Manuals from 1st Semester to 8th Semester in this page. Connect the circuit diagram as shown in Figure 2. 6. If we subtract loss corresponding to OA from Wo, then we get the no-load electrical and magnetic losses in the machine, because the no-load input Wo to the motor consists of (i) small stator Cu loss 3I o ² R 1 (ii) Stator core loss W c = 3 G o V c Note the readings of Ammeters. Sum up the Ammeter readings (I1 and I2) , that should be equal to total current (I). 2. SAFETY is of extreme importance in the Electrical Engineering Laboratories. As more and more doctors recommend people to use home blood pressure monitors to keep a regular check on their blood pressure readings at home, there is a common debate regarding which type of blood pressure testing machines are better – automated or manual blood pressure readings. USHA RAMA COLLEGE OF ENGINEERING & TECHNOLOGY EM-II LAB MANUAL Prepared by Mr. J Satish Babu & Mr. A. LokeshDEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING 1 ... Tabulate the readings as shown. 3. LABORATORY MANUAL ON ELECTRICAL MACHINES - II LABORATORY 2018 – 2019 III B. (Electricity is a good servant but a bad master). 2. Uploaded 3 years ago . Apply the voltage (say 5v) and note the Ammeter readings. Fig – 1.2 SC Test on Single Phase Transformer 1.5 PROCEDURE: :O. So, practice with enough care and attention in handling electrical equipment and follow safety practices in the laboratory. 7. Note down the readings of voltmeter (V), Ammeter (I o) and wattmeter (P o). LABORATORY PRACTICE SAFETY RULES 1. ELECTRICAL MACHINE LAB. 2. 4. Electricity NEVER EXECUSES careless persons. 2. lab manual experiment names. 3 scott connection of transformers. Switch ON the supply to RPS. MANUAL EE 591 Page | 6 EXPERIMENT NO: EM – II/2 TITLE SPEED CONTROL OF THREE PHASE SQUIRREL CAGE INDUCTION MOTOR BY VOLTAGE CONTROL AND FREQUENCY CONTROL METHOD. Upgrade to Prime and access all answers at a price as low as Rs.49 per month. 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