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3. 5. 7. (Electricity is a good servant but a bad master). Electricity NEVER EXECUSES careless persons. 3 scott connection of transformers. Make the connections as per the circuit diagram. 2. Apply the voltage (say 5v) and note the Ammeter readings. Note down the readings of voltmeter (V), Ammeter (I o) and wattmeter (P o). 2. C TEST 1. 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. LABORATORY MANUAL ON ELECTRICAL MACHINES - II LABORATORY 2018 – 2019 III B. THEORY : The air-gap induced emf in an ac machine is given by 7 Theory: A transformer is a static device which transfers the electrical energy from one circuit to another circuit without any change in the frequency. Sum up the Ammeter readings (I1 and I2) , that should be equal to total current (I). 3. Precautions: 1. 2. Fig – 1.2 SC Test on Single Phase Transformer 1.5 PROCEDURE: :O. Total Page 52 . Uploaded 3 years ago . Note the readings of Ammeters. Electrical machines 2 lab manual 1. LABORATORY PRACTICE SAFETY RULES 1. DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING 13 14. Upgrade to Prime and access all answers at a price as low as Rs.49 per month. ELECTRICAL MACHINE LAB. 2. 4. OBJECTIVE : To study the speed control of induction motor by varying supply frequency (V/f control). Apply rated voltage with the help of autotransformer across LV winding, with the HV winding as open circuited. 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. High blood pressure or hypertension affects more people than one can possibly think. The readings of the total power input are Wo, Io and voltage V are plotted. So, practice with enough care and attention in handling electrical equipment and follow safety practices in the laboratory. 1 open circuit & short circuit test on a single phase transformer . 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. Gradually increase the supply voltage in steps. Connect the circuit diagram as shown in Figure 2. 3. rejinpaul.com have taken efforts in providing the Regulation 2017 EEE Laboratory Manuals in PDF format. 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 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 SAFETY is of extreme importance in the Electrical Engineering Laboratories. (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. > 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 > 6. A.C. Electrical Machines Lab GRIET/E.E.E. The transformer works on the principle of electromagnetic induction between two windings placed on a common magnetic circuit. Switch ON the supply to RPS. 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