electropneumatic controllers ................................. 14 1.4 Advantages of electropneumatic controllers .................................. 17 Chapter 2 – Fundamentals of electrical technology ........................ 19 2.1 Direct current and alternating current............................................. 20 2.2 Ohm’s Law...................................................................................... 22 2.3 Function of a solenoid ........................................................
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John)(2010) Analogue Multimeters • (n.a)(n.d) Circuit Testing of MultiMeters. Retrieved: January 1‚2011.From: http://www.globalspec.com/LearnMore/Labware_Test_Measurement/Multimeters_Electrical_Test_Meters/Analog_Multimeters • (NA)(2008) Making current measurements • (NA)(ND) What is Continuity? Retrieved: January 09‚2011. From: http://physicsdaily.com/ • (NA)(Decemeber 13‚2010) What is Resistance? Retrieved: January 8‚2011 from http://www.ladyada.net/learn/multimeter/resistance.html • (NA)(ND)
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What’s the difference between resistance and resistivity? Resistance is the obstruction offered to the flow of current by a conductor. Resistivity is the obstruction offered to the flow of current by UNIT AREA OF the conductor. So basically‚ resistance is the property of the object (say a copper wire)‚ whereas resistivity is the property of the substance (copper). And so resistance depends upon the properties of the object. Whereas resistivity depends upon the properties of the metal.
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Westinghouse Portable Generators Westinghouse Electric Company is an electric management firm that deal in anything related to power generation. Westinghouse Generators is its ancillary sector. Westinghouse has earned an immaculate name when it comes to power production. After all experience matters…. Especially when it is more than 150 years. It has a dedicated line of generator that generates more power with time and better expertise. The engines and research and development; all has been made
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BETWEEN TWO GEOLOGIC UNITS OF GREATLY DIFFERENT RESISTIVITIES P1 AND P2 . A. CALCULA TE THE DIRECTION THAT ELECTRICAL CURRENT WILL LEAVE THE BOUNDARY INTO P2 IF IT APPROACHES THE BOUNDARY AT AN ANGLE OF 45° TO THE NORMAL. B. CALCULATE THE ELECTRICAL POTENTIAL AT POINT A FROM A SINGLE SOURGE OF CURRENT ( +I ) A T POINT B. REMEMBER THAT THE BOUNDARY WILL CREATE A REFLECTED IMAGE OF THE CURRENT SOURCE WITH MAGNITUDE KI. FOR P1 = 100 Ωm AND P2 = 0.1 Ωm C. REPEAT (A) AND (B) FOR P1 = 100 Ωm AND P2 = 10000
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average resistance from 10 voltage and current measurements‚ and find the graphical resistance using a trend line. The results show that the average resistance calculated from 10 voltage and current readings and the graphical resistance were closest to the measured resistance‚ while the color coding resistance was furthest off. Introduction: Georg Simon Ohm established that current (I) in a wire is proportional to the voltage (V) applied to its ends. How much current flows in the wire depends on the
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A GUIDE TO BUILDING CIRCUITS and USING A MULTIMETER TO MEASURE RESISTANCE‚ VOLTAGE‚ AND CURRENT PART A: USING THE BREADBOARD TO BUILD A CIRCUIT The "breadboard" consists of a block of white plastic with two sets of five rows of holes. Each set of rows looks like . . . . . . . . . . . . . . . . . . etc. . . . . . . . .
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Abstract-In this we use a piezoelectric crystal which gives variable voltage output depending upon the vibrations given on the crystal surface. This voltage is converted to current using suitable converter. Now the current is passed through a memristor‚ which has a corresponding resistance value. Whenever the current increases‚ the resistance value increases and the change in resistance is detected using a microwave generator connected at the end. Using the microwave level‚ an external device (similar
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Purpose: The purpose of this experiment is to study the basics of a direct current circuit. There are several parts to this experiment‚ where resistors are set up as parallel‚ series or both. We measure the potential difference and current measured by voltmeter and ammeter respectively. Also‚ we set up a Wheatson Bridge to measure the unknown resistor. Equipment: Voltmeter PCC 000218 Galvanometer PCC 000180
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switch opening with an over current. Fig 2: Gate voltage of Thyristor c) C switching opening and closing by means of miniature switch. Fig 3: Voltage waveform between R5 and R6 Calculation of gate current of SR1 and SR2 Resistance of R5 and R6 = 100 Ω Peak value of voltage waveform = 50 × 3 =150V Gate current of SR1 and SR3 = 150/100 = 1.5A d) AC switch opening and closing with lights. Fig 4: Waveform across R5 and R6 Calculation of gate current peak in SR1 and SR2 Peak
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