on the ionic conductivity of YSZ thin films produced by pulsed laser deposition. The materials used for the electrodes and wiring of the samples‚ the measurement set-up and the sample configuration played an important role in obtaining successful impedance measurements in temperatures up to 900ºC. Part of this research was therefore contributed to finding the optimal conditions for ionic conductivity measurements on YSZ thin films. Four electrode materials were chosen and tested‚ knowing SrRuO3‚ Pt
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Answer to Questions 1. Describe the type of meter movement used in the analog meters. The two analog meters—namely‚ the voltmeter and the ammeter—employ the d’ Arsonval meter movement. The movement consists essentially of a movable iron-core coil mounted on a pivot between the poles of a permanent magnet. When current flows through the coil‚ it creates a torque which causes the pointer to deflect. The amount of current through the coil determines the deflection of the pointer‚ which is registered
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CONTENTS 1) INTRODUCTION 2) CIRCUIT DIAGRAM 3) HOW IT WORKS 4) COMPONENETS DESCRIPTION. A. IC 555 TIMER B. BC 547 TRANSISTOR C. RESISTER D. CAPACITOR E. PRESET F. BUZZER G. PCB 5) SCOPE 1) INTRODUCTION: Generally when we are pumping liquids like water or may be any other liquid is we need a human to see whether the tank is filled or not or we will place a overflow pipe to know that the tank is fill or not
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(smaller further down the network). This can result in areas where the low voltage network is weak in terms of ability to cope with distribution generation injection of power. Moreover‚ they also said that the impact of poor power quality on the electrical supply network is often insidious and often its root cause is not correctly identified. Harmonic content has been shown to destroy capacitor banks‚ over-heat transformers and overload neutral connections. Storm related damage is a major source of
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CIRCUIT CONTRIBUTION OF HVDC LIGHT By Jijo Francis DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING FEDERAL INSTITUTE OF SCIENCE AND TECHNOLOGY (FISAT) MOOKKANNOOR P O‚ ANGAMALY-683577‚ Affiliated to MAHATMA GANDHI UNIVERSITY 2011 FEDERAL INSTITUTE OF SCIENCE AND TECHNOLOGY (FISAT) Mookkannoor P O‚ Angamaly-683577. Affiliated to MAHATMA GANDHI UNIVERSITY‚ Kottayam- 686560 DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING CERTIFICATE This is to certify that this report
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The Islamic University of Gaza Faculty of Engineering Department of Electrical and Computer Engineering Final Exam Electrical Machines (EELE 3351) Time: 2 Hours Student’s Name Student’s Number Grade Problem # Grade Problem 1 20 Problem 2 20 Problem 3 20 Problem 4 Student Grade 20 Good Luck Dr. Assad Abu-Jasser Tuesday May 27‚ 2008 All kinds of calculators are allowed 1. The coil on the magnetic core shown has 500 turns. The core
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elementary description of network terms and definitions‚ • explain the superposition theorem‚ reciprocating theorem and maximum power transfer theorem‚ • describe the Thevenin’s and Norton’s theorems‚ and • explain star delta transformation. 26 Electrical Technology 2.2 NETWORKS We can define a network as a complex form or an electric circuit which consist of a number of inter-connected single circuit elements. A network consists of different elements. The elements are represented by network branches
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microcontroller PIC16F684. The microcontroller performs all the necessary tasks during starting‚ warming-up‚ and steady state‚ including closed-loop control of lamp current and protections. The closed-loop control takes into account the lamp dynamical impedance. Experimental results for a 35-W MH lamp are presented‚ and the obtained overall efficiency is 90%. Index Terms—Electronic ballasts‚ metal halide (MH) lamps‚ microcontrollers. I. I NTRODUCTION LECTRONIC ballasts for high-intensity discharge (HID)
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transformations and switching stations are required. These are generally known as substations. Substations are important part of power system and form a link between generating stations‚ transmission systems and distribution systems. It is an assembly of electrical components such as bus-bars‚ switchgear apparatus‚ power transformers etc. Their main functions are to receive power transmitted at high voltage from the generating stations and reduce the voltage to a value suitable for distribution. Some substations
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Case Study - “Jones Electrical” 2. – Why this profitable company needs a bank loan? As we can see from the figures and the information given in the present case‚ the company is very profitable due to the ambition and well management done by its owner Mr. Jones. In this regard‚ we can see in “Table 2 in the spreadsheet”‚ that the company is taking advantage of the 2% discount offered by suppliers saving around $75‚000.00 per year. We have to pay especial attention to the agreement reached with
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