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qr code vb.net library Magnetic Coupling. Transformers in .NET
CHAPTER 10 Magnetic Coupling. Transformers Scan Code128 In Visual Studio .NET Using Barcode Control SDK for .NET Control to generate, create, read, scan barcode image in .NET applications. USS Code 128 Maker In .NET Using Barcode maker for VS .NET Control to generate, create Code 128B image in VS .NET applications. Fig. 265
Code 128B Recognizer In .NET Framework Using Barcode reader for .NET framework Control to read, scan read, scan image in .NET applications. Bar Code Encoder In .NET Framework Using Barcode maker for Visual Studio .NET Control to generate, create bar code image in .NET applications. Problem 211 An unbalanced Yconnected threephase generator is connected, by means of a threewire line, to a balanced Yconnected resistive load of 12 ohms per phase. It is given that the generator phase voltages are, in volts, equal to " " " A 90=08 B 72=1208 C 54=2408 " " " " in the same ccw sense A to B to C as in Fig. 261, with A the reference voltage. This is shown in schematic diagram form in Fig. 266. Bar Code Scanner In Visual Studio .NET Using Barcode reader for .NET Control to read, scan read, scan image in Visual Studio .NET applications. Code 128 Code Set C Generator In Visual C#.NET Using Barcode creation for VS .NET Control to generate, create Code 128 image in Visual Studio .NET applications. Fig. 266. The given threephase system.
Code128 Creator In Visual Studio .NET Using Barcode encoder for ASP.NET Control to generate, create Code 128 Code Set A image in ASP.NET applications. Printing Code 128 Code Set A In VB.NET Using Barcode creator for .NET Control to generate, create Code 128 Code Set A image in Visual Studio .NET applications. Using the method of symmetrical components, show that the magnitudes of the line currents, in amperes, are equal to " jIA j 6:764 answer " " jIB j 6:062 answer jIC j 5:268 answer GS1 DataBar14 Maker In .NET Using Barcode printer for VS .NET Control to generate, create GS1 DataBar Limited image in VS .NET applications. Creating Linear In .NET Framework Using Barcode generation for .NET framework Control to generate, create Linear Barcode image in VS .NET applications. Problem 212 " " " Let us, in problem 211 (Fig. 266), denote the line voltages by Vab , Vbc , and Vca . Show " " "ab j 140:58 jVbc j 109:49 jVca j 126:00: that, in volts, jV Problem 213 One formula for calculating average power is P RI 2 , where I is magnitude of rms current. Using this formula, nd the total power P produced by the generator in problem 211. Generate EAN13 Supplement 5 In .NET Using Barcode encoder for Visual Studio .NET Control to generate, create EAN / UCC  13 image in VS .NET applications. UPC E Generator In .NET Using Barcode creator for Visual Studio .NET Control to generate, create UPCE Supplement 5 image in .NET framework applications. CHAPTER 10 Magnetic Coupling. Transformers
Code 3/9 Generator In ObjectiveC Using Barcode maker for iPad Control to generate, create Code 39 Full ASCII image in iPad applications. Making Barcode In Java Using Barcode generation for Java Control to generate, create bar code image in Java applications. Problem 214 It can be shown that the true average sinusoidal power output P of a generator is " equal to the REAL PART (r.p.) of the PRODUCT of the generator voltage V and ", that is the CONJUGATE of the generator current I "" P r:p: V I 467 * Barcode Drawer In None Using Barcode generator for Online Control to generate, create bar code image in Online applications. Code 128B Encoder In Visual Basic .NET Using Barcode maker for VS .NET Control to generate, create Code 128 Code Set C image in VS .NET applications. " " where I ( double overscore ) denotes the conjugate of I . Verify that the use of eq. (467) gives the same answer as found in problem 213. The preceding problems dealt with Fig. 266, which is a case in which an UNBALANCED GENERATOR feeds a BALANCED LOAD. Now let us consider the opposite case, in which a BALANCED GENERATOR feeds an UNBALANCED " LOAD, as illustrated in Fig. 267, where voltage V is the reference phase voltage with "N is the voltage at the load junction point, also reference to the junction point O. Also, V with respect to the point O. Bar Code Scanner In Visual Studio .NET Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in .NET applications. Bar Code Drawer In None Using Barcode creation for Font Control to generate, create barcode image in Font applications. Fig. 267
Bar Code Generator In None Using Barcode generator for Office Word Control to generate, create barcode image in Office Word applications. European Article Number 13 Maker In Java Using Barcode printer for Java Control to generate, create GTIN  13 image in Java applications. " Keep in mind that VN denotes the voltage drop from the junction point in the load to the junction point at O. Therefore, since the generator voltage is equal to the sum of the voltage drops in any closed path, we have the following three voltage equations in Fig. 267: " " " V Z A IA V N " " " " aV ZB IB VN " " " " a2 V ZC IC VN Here we re dealing with the general case of unequal load impedances; thus the three line (and phase) currents will, in general, be unequal, and hence can be resolved into the sum of positive and negative sequences; thus " " " IA IA1 IA2 " " " IB IB1 IB2 " " " IC IC1 IC2 * See note 29 in Appendix.
CHAPTER 10 Magnetic Coupling. Transformers
which, upon making use of eqs. (461), (462), (464), and (465), can also be written as " " " IA IA1 IA2 " "" " " IB aIA1 a2 IA2 " " " "" IC a2 IA1 aIA2 " " " and thus, upon substituting these values of IA , IB , and IC into the rst set of equations following Fig. 267, you should nd that " " " " " ZA IA1 ZA IA2 VN V " "" " " " " " aZB IA1 a2 ZB IA2 VN aV " "" " " " " " a2 ZC IA1 aZC IA2 VN a2 V 468 469 470 Problem 215 Here you are asked to complete the foregoing discussion concerning Fig. 267 as follows. Making use of eqs. (460) and (463), and the fact that, by Kirchho s current " " " law, IA IB IC 0, show that the values of the line currents in Fig. 267 are given by the equations " " " " 1:732 YA YC j30 YA YB j30 V " IA " " "A YB YC Y " " " " 1:732 YB YC j90 YA YB j30 V " IB " " " YA YB YC " " " " 1:732 YA YC j30 YB YC j90 V " IC " " " YA YB YC where, in terms of the admittances " " YA 1=ZA " " YB 1=ZB " " YC 1=ZC 471 472 473 in which the reciprocal ohms are called mhos. Problem 216 " " " In Fig. 267 let V 125 volts, ZA 3 j4 ohms, ZB 8 ohms, and ZC 5 ohms. Using symmetrical components, verify that the magnitudes of the line currents, in amperes, are equal to " jIA j 25:99 " jIB j 22:85 " jIC j 17:37 Problem 217 In threephase work we often deal in terms of line voltage instead of phase voltage. Thus, in Fig. 267, suppose that the reference voltage is taken to be the " line voltage, VAB VAB =08 VAB , this being the voltage from the center wire to the top wire in the diagram. What changes would be required to express eqs. (471) through (473) in terms of line voltage instead of phase voltage

