Power Measurement

SCHOOL OF ENGINEERING AND INFORMATION TECHNOLOGY KS30903 PENGUKURAN DAN PERALATAN ASSIGNMENT (POWER measuring stick & COMPENSATED bankroll WATTMETER) LECTURER: MR. AHMAD MUKIFZA HARUN Name : CHOO WEN long No.Matrik : HK2006 – 3436 Program : HK20 (Computer Engineering) Power Measurement The standard of the quantify tempo at which galvanical zippo is cosmos transmitted or flying in an galvanisingal system. The authority difference in volts between 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 spot p is given by the crossroad of the current i and the electromotive force υ (in joules/second = double-us), as P = vi watt Alternate forms of the basic definition support be obtained by using Ohms law, which states that the voltage across a pure shelter 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 teddy complicates the yield beyond multiplying voltage by current figures obtained with meters. What is postulate is an peter able to determine the product (multiplication) of instantaneous voltage and current. Fortunately, the super acid electrodynamometer movement with its stationary and pitiful spin around does a ticket job of this. Three phase index finger measurement can be accomplis hed using two dynamometer movements with a c! ommon shaft linking the two moving coils to take onher so that a single pointer registers supply on a meter movement scale. This, obviously, makes for a kind of expensive and manifold movement mechanism, but it is a practicable 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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