Representation of Sinusoidal Signal by a Phasor and Solution of Current in R-L-C Series Circuits Version 2 EE IIT‚ Kharagpur In the last lesson‚ two points were described: 1. How a sinusoidal voltage waveform (ac) is generated? 2. How the average and rms values of the periodic voltage or current waveforms‚ are computed? Some examples are also described there. In this lesson‚ the representation of sinusoidal (ac) voltage/current signals by a phasor is first explained. The polar/Cartesian (rectangular)
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Current Balance PHY 114 10/29/2013 Abstract: The purpose of this experiment was to understand the current balance‚ current balance is an apparatus that allows measurement of the small force between two current carrying conductors. It consists of two parallel horizontal bars‚ which are connected in series. The current flows in opposite directions in the two conductors so there is a repulsive force between them‚ by Newton’s third law there are equal and opposite forces on both wires. In the
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INTRODUCTION This document proves the high and low voltage cable integrity after installation or jointing work is completed and before connection or reconnection to the PGCB Network. Such testing and commissioning will be undertaken by people‚ who are both qualified and authorized‚ and the relevant test results will be duly entered into the relevant test report form (refer to CEOF6022 and CEOF6023). TOOLS AND EQUIPMENT Danger HV Test Signs 1000V DC Megger Insulating
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Advanced Modulation Techniques for Power Converters by Ali Mehrizi-Sani A Thesis submitted to the Faculty of Graduate Studies of The University of Manitoba in partial fulfilment of the requirements of the degree of Master of Science Department of Electrical and Computer Engineering University of Manitoba Winnipeg‚ Manitoba Copyright c 2007 by Ali Mehrizi-Sani Acknowledgement Submission of this thesis marks a milestone in my academic career. After 18 years of schooling‚ there
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Experiment 1: Simulation of 1 – φ half wave uncontrolled rectifier with R‚ RL and RLE load. Aim of the Experiment: To simulate 1 – φ half wave uncontrolled rectifier with a) R load b) RL load c) RLE load. And plot input voltage waveform‚ output current waveform‚ output voltage waveform and voltage across the diode. Software Required: (a) Windows Xp or above (b) Matlab 7.0 or above (c) Simulink 2.0 or above Theory: This is the simplest type of uncontrolled rectifier. It is never used in industrial
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Because of this property‚ AC can travel longer distances on high voltage (low current) with minimal power loss. Transformers can step-down the voltage to the adequate amount to be used in homes and buildings. Disadvantages Power is lost through heat on transmission lines due to inductance and resistance which causes voltage drops. To minimise power loss‚ long distance transmission is run on high voltage (low current). Applications of AC a a a a Most commercial motors are AC motors. In the
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Laboratory Report Cover/Worksheet DeVry University College of Engineering and Information Sciences Course Number: ECET220 Professor: Laboratory Number: Laboratory Title: Summing Amplifier (Inverting and Non-Inverting) and Instrumentation Amplifier Submittal Date: Objectives: Results: Conclusions: Team: Name Program Signature Name Program Signature Name Program Signature Observations/Measurements: IV. A. 2. DMM measurements of the summing
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the hipot unit must also be connected to ground. In some cases‚ it is necessary to float the return and not connect it to ground‚ but that will not be considered in this writeup. The hipot can fail for having high leakage current‚ a ground‚ an ARC‚ or low leakage current. To verify that the hipot test is working‚ do the following... First‚ disable all other tests except hipot. 1. To verify that high leakage is detected‚ temporarily adjust the hipot maximum‚ either in the hipot itself
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accidental stimulation of the body’s nervous system by electric current. It is the result of passage of electric current through the human body Confidential Slide • Most widely recognised danger of electricity. • When a person standing on the ground touches a live wire‚ or touches a live tool or machine with poor insulation or hits a live cable‚ then a person becomes conductor‚ and the shock that a person feel is the electrical current going through the body of the person. • Shock can cause : - pain
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Electrical Machines I Prof. Krishna Vasudevan‚ Prof. G. Sridhara Rao‚ Prof. P. Sasidhara Rao 2 Basic Principles As mentioned earlier the transformer is a static device working on the principle of Faraday’s law of induction. Faraday’s law states that a voltage appears across the terminals of an electric coil when the flux linkages associated with the same changes. This emf is proportional to the rate of change of flux linkages. Putting mathematically‚ e= dψ dt (1) Where‚ e is the induced
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