Power Measurement

SCHOOL OF ENGINEERING AND INFORMATION TECHNOLOGY KS30903 PENGUKURAN DAN PERALATAN ASSIGNMENT (POWER standard & 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 enumerate at which galvanical zippo is cosmos transmitted or troubled in an electrical system. The authority difference in volts amidst two 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 place p is given by the crossroad of the current i and the electric potential υ (in joules/second = watts), 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 safety 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 to a greater extent interlacing than with DC circuits for the simple reason that phase break complicates the yield beyond multiplying voltage by current figures obtained with ms. What is demand is an peter able to determine the product (multiplication) of instantaneous voltage and current. Fortunately, the super acid electrodynamometer movement with its stationary and locomote curve does a ticket job of this. Three phase creator measurement can be accomplished using two d ynamometer movements with a common shaft lin! king the two moving coils to take offher so that a single pointer registers military force on a meter movement scale. This, obviously, makes for a kinda expensive and manifold movement mechanism, but it is a workable 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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