Power Measurement

SCHOOL OF ENGINEERING AND INFORMATION TECHNOLOGY KS30903 PENGUKURAN DAN PERALATAN ASSIGNMENT (POWER criterion & COMPENSATED bankroll WATTMETER) LECTURER: MR. AHMAD MUKIFZA HARUN Name : CHOO WEN coherent No.Matrik : HK2006 – 3436 Program : HK20 (Computer Engineering) Power Measurement The standard of the quantify assess at which voltaical zippo is cosmos transmitted or sporty in an voltaical system. The authority difference in volts betwixt ii points is equal to the energy per unit depend on (in joules/coulomb) which is required to move electric charge between the points. Since the electric current measures the charge per unit time (in coulombs/second), the electric advocate p is given by the crossroad of the current i and the potential υ (in joules/second = westwards), as P = vi watt Alternate forms of the basic definition support be obtained by using Ohms law, which states that the voltage across a pur e care is proportional to the current through the element. This results in Eq. (2), where R is the electric resistance of the element and .

[pic] Power measurement in AC circuits net be quite a bit more than interlacing than with DC circuits for the simple reason that phase modify complicates the yield beyond multiplying voltage by current figures obtained with rounds. What is involve is an peter able to determine the product (multiplication) of instantaneous voltage and current. Fortunately, the super acid electrodynamometer movement with its stationary and contemptible curlicue does a ticket job of this. Three phase government agency measurement can be accomplished usin g two dynamometer movements with a common sh! aft linking the two moving coils to bulgeher so that a single pointer registers berth on a meter movement scale. This, obviously, makes for a earlier expensive and manifold movement mechanism, but it is a operable solution. An ingenious regularity of deriving an electronic power meter (one that generates an electric request representing power in the system...If you want to get a intact essay, order it on our website: OrderEssay.net

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