Question

20. This problem should be done without any phasor voltage or current computations. In the circuit of Figure P11.20, V = 2300 Vms at 60 Hz and the following powers (in kVA) are con- sumed by various impedances and resistances: S, = 20 + 38, S, = 20 + j18, S3 = 5+j6, and S4 = 3 + j4. (a) Find I (rectangular form) and the complex power delivered by the source. (b) Determine I in polar form. (c) Find the complex power delivered to the group of impedances Z1, Z2, and (d) (e) Find V, in rectangular and polar form. Find V, in rectangular and polar form. Figure P11.20 CHECKS: (a) Complex power delivered by source: 48 + j36 kVA; (b) [1] = 26.087 A

Clear and concise handwriting please with explanation. Thank you.

Answer 1

roblem Comples Po delvered by orce - 20+j8 204j(8+ S+j6 3+j4 =(483) kVA (8+36) = 20 82+jI5.652 2300 - 20 8-jI5.52A 26.os-36.8? A

Comples oscr delvered 2.2 2 gaoop ofinfedonses 2D& 20+j18 +3+ jy (3 0k ( ltaye duisin rale) V, = V, x_2a 23t sztSa 2300 x (43tj30/k 2009.85T961 V (20 p.cc-j61) U

(27 200. 8L96) X (20+513) K (2t9yt(20+)K 22 22+24 - (1695. 58 -jioq.R)V. -V.x 2 2(22+2 = , + x S2 D