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qr code generator vb.net Reactance and Impedance in VS .NET
CHAPTER 8 Reactance and Impedance USS Code 128 Decoder In .NET Framework Using Barcode Control SDK for .NET Control to generate, create, read, scan barcode image in VS .NET applications. Code128 Generator In Visual Studio .NET Using Barcode drawer for .NET Control to generate, create Code 128 Code Set B image in VS .NET applications. product VI the apparent power, because it must be multiplied by the power factor, cos , to get the true power P. This can be expressed by writing eq. (228) in the form true power apparent power cos that is, Pt Pa cos VI cos 229 where Pt true power, and Pa apparent power VI. Now recall that in an ac circuit ENERGY is actually expended ONLY in the RESISTIVE component of the circuit impedance. Thus TRUE POWER, in an ac circuit, is always equal to the square of the rms current, times the resistance R ; that is Pt I 2 R hence eq. (229) becomes I 2 R VI cos 230 It is also true that V IZ (eq. (200)), and thus, substituting this value of V in eq. (230), we have the important fact that cos R=Z 231 Scanning Code 128C In .NET Using Barcode scanner for .NET Control to read, scan read, scan image in VS .NET applications. Create Bar Code In .NET Framework Using Barcode creation for .NET framework Control to generate, create bar code image in Visual Studio .NET applications. where R is the circuit resistance and Z is the magnitude of the circuit impedance (as can also be seen from inspection of Figs. 130 and 139). Hence another expression for the power factor is R/Z, and thus eq. (229) is extended to the form Pt VI cos VI R=Z 232 To continue the discussion, let us rst redraw Fig. 130 as Fig. 155, where !L X and " jZ j Z. Scan Bar Code In VS .NET Using Barcode decoder for .NET Control to read, scan read, scan image in VS .NET applications. Generate Code 128 In Visual C#.NET Using Barcode drawer for .NET framework Control to generate, create Code 128C image in .NET framework applications. Fig. 155
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Make Data Matrix ECC200 In VS .NET Using Barcode generator for .NET Control to generate, create ECC200 image in Visual Studio .NET applications. Make Barcode In VS .NET Using Barcode maker for .NET Control to generate, create barcode image in .NET framework applications. Fig. 157
EAN128 Drawer In .NET Framework Using Barcode maker for .NET framework Control to generate, create UCC  12 image in VS .NET applications. Paint Delivery Point Barcode (DPBC) In .NET Using Barcode generation for .NET framework Control to generate, create Delivery Point Barcode (DPBC) image in Visual Studio .NET applications. Next, multiply all three sides of the triangle in Fig. 155 by the square of the magnitude of the rms current, I 2 . Doing this preserves the angle , and Fig. 155 becomes Fig. 156 where, from our work above, I 2 R Pt and (since V IZ) VI I 2 Z Pa , as shown in Fig. 157. The meaning of Px is as follows. Since reactance, X, is measured in ohms, it follows that I 2 X is measured in watts; that is, I 2 X represents what is called reactive power. Thus Px represents power that does not represent energy that is transformed into heat, light, or mechanical energy, but only energy that is momentarily stored in electric and/or magnetic elds and then returned to the source. From inspection of Fig. 157, note that P2 P2 P2 a t x 233 To summarize, the true power Pt in an ac circuit is given by eq. (228), in which cos is the power factor, where cos R=Z Pt =Pa 234 Generate GS1  13 In VS .NET Using Barcode generation for Reporting Service Control to generate, create European Article Number 13 image in Reporting Service applications. Generating EAN 128 In None Using Barcode drawer for Online Control to generate, create GS1128 image in Online applications. CHAPTER 8 Reactance and Impedance
Bar Code Encoder In Java Using Barcode creation for Java Control to generate, create bar code image in Java applications. EAN 13 Encoder In Java Using Barcode generator for BIRT reports Control to generate, create EAN13 image in BIRT applications. It should be noted that the above conclusions are valid for any con guration of series, " " parallel, or seriesparallel network. Thus, if a generator of V volts delivers a current of I " R jX ohms amperes into a certain network, and if the generator sees an impedance Z looking into the network, then the true power produced by the generator is equal to Pt VI cos , where cos R=Z. Problem 133 In problem 116, nd (a) the apparent power, (b) the true power, (c) the reactive power. Problem 134 In problem 119 (Fig. 134), nd the true power produced by the generator if V 28 volts, R 12 ohms, and !L 16 ohms. (Answer: 65.333 W, approx.) Problem 135 In Fig. 158, the circuit values are in ohms and henrys, the generator voltage being 32 V rms, as shown. Given that ! 1000 rad/sec, nd the true power produced by the generator. (Answer: 226.98 W, approx.) Generate Code39 In Java Using Barcode generation for BIRT Control to generate, create Code 39 Full ASCII image in Eclipse BIRT applications. Drawing 1D Barcode In Java Using Barcode encoder for Java Control to generate, create 1D Barcode image in Java applications. Fig. 158
Recognizing Bar Code In .NET Framework Using Barcode reader for .NET Control to read, scan read, scan image in Visual Studio .NET applications. Encode UPCA In Java Using Barcode generator for Java Control to generate, create Universal Product Code version A image in Java applications. Problem 136 Rework problem 135, this time using the method of loop currents. Remembering that the power delivered to a pure resistance of R ohms is always equal to the square of the magnitude of the rms current, times R P I 2 R , nd (a) power delivered to the 2ohm resistance, (b) power delivered to the 4ohm resistance, (c) check to verify that the sum of the answers in (a) and (b) is the same as the answer found in problem 135. Problem 137 Find (a) the apparent power, (b) the true power, produced by the generator in problem 124 (Fig. 141). Problem 138 Find the true power produced by the generator in Fig. 142, making use of the value " of I1 found in problem 126. Problem 139 In Fig. 142, nd (a) power to the 15ohm resistance, (b) power to the 10ohm resistance. Verify that the sum of (a) and (b) is the same as the answer found in problem 138.

