Investigating the current - potential difference relationship for a metal wire. Aim: To design an experiment that will facilitate an I - V Graph to be ascertained of a metal wire and thus find the resistance of the wire by deriving the inverse of the gradient of the graph. Skill: Planning & Designing Theory: Resistance is a property of any object or substance to resist or oppose the flow of an electrical current. The quantity of resistance in an electric circuit determines the amount of current flowing in
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Electrical Safety Electricity is all around us‚ no matter where you work there are electrical outlets and machines that run off electricity. Due to how dangerous electricity can be Occupational Safety and Health Administration or OSHA has come up with safety standards when dealing with electricity. Their standards are designed to protect employees who are exposed to the dangers whether it be directly like working on an outlet or indirectly like using the outlet. Safety equipment is available for
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Abstract In our experiment‚ we analysed three-phase balanced or unbalanced circuits by using PSpice 9.1 and the same way is used to analyse single-phase ac circuit. We determined the value of generator current Iab‚ line current IbB‚ and the phase current IBC. Initially‚ PSpice is used to draw a schematic diagram of circuit A. Under the simulation‚ two major problems were occurred. First‚ a delta connected source is a loop of voltage sources which must be prevented when PSpice is used. To prevent
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figure shows. In the experiment‚ we want to calculate the resonance frequency. We know the current will be maximum when the circuit is driven at its resonance frequency. In addition‚ the amplitude I0 of the AC current in a series LRC circuit depends on the amplitude V0 of the applied voltage and the impedance Z‚ which is a measure of the overall opposition of a circuit to the flow of an electrical current as ‚ So we just need to use the apparatus to measure the maximum voltage. As we know‚ at the
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Name ______________________________ ECE 201 Final Exam August 4‚ 2010 By signing below‚ I certify that the work submitted on this examination is my own‚ and that I have adhered to fair standards of academic honesty. This exam is void unless signed. _________________________________ signature Instructions a) Write your name on the front page ONLY. b) Show all your work for the following problems so that partial credit can be assigned. Cross out clearly any work which is to be disregarded. Be certain
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adding low-pass filter‚ so that a low distortion of the input current is easily achieved. This controller has been verified via simulation in Simulink using a continuous time plant model and a discrete time controller. Index Terms—power‚ factor‚ correction‚ boost‚ rectifier. I. INTRODUCTION. Single-phase power factor correction (PFC) circuits provide rectification of the line voltage to a regulated dc voltage while shaping the input current to be a sinusoid and in phase with the line voltage [1]. Often
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project. Too much current flow will heat up the A longer wire in the primary will present more resistance than a short one‚ since the resistance of the wire is determined by its diameter and its length. According to Ohm’s Law‚ current is a function of resistance and current in the formula I=E/R‚ so a lower value of E‚ and a higher value of R will result in less current flow. The heating of the transformer coil and its possible failure results from a high current (larger number of
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increase. So due to complexity‚ it is very difficult to draw the Bewley Lattice Diagram beyond certain time period. But with the presence of simulation packages we can simulate any number of substations transient behavior for any time duration. Current values of substations are shown following figures‚ At substation
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Introduction A. Background of the Study Most people grew up and lived with the electric currents flowing through the wiring within the walls of their homes. They helped us a lot everyday besides giving energy to power appliances at home such as television‚ computer‚ radio‚ video games. Electricity keeps more important appliances like gas stove‚ refrigerator‚ air conditioners which we all need to lessen and help us in our work and in life. Thus having power cut tends to create confusion
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network function can be completely specified by: (A) Real parts of zeros (B)Poles and zeros (C)Real parts of poles (D)Poles‚ zeros and a scale factor 8. A unit impulse voltage is applied to one port network having two linear components. If the current through the network is 0 for t<0 and decaysexponentially for t>0then the network consists of (A) R and L in series (B)R and L in parallel (C)R and C in parallel (D)R and C in series ELECTRONICS CAREER www.ecatn.blogspot.com 9. The Q-factor of
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