Question

QUESTION 5 a) Determine the value of current A in Figure Q5 by using Thevenin Theorem. Solve VH using superposition theorem. (15 marks) b) State the value of Ri should have to allow maximum power to be delivered to it. ( mark) e) Calculate the voltage, current and power at the load, R when maximum power is delivered to it. (6 marks) d) Show that the efficiency in term of input and output power of the circuit is 50 % when maximum power is transferred to the load, R (3 marks) IL RL 3k 3mA 4V 6k 2k0 2kn 2kQ 3kQ 4kQ 10v Figure QS ww

Answer 1

4V 3とん M votlage open Thinin voltage) Circait , du to 1ov 10メ3 z4. 286V Eスヒル 2とんう 3n ov due t4 v'- ニ4メ2 -2V 4V (2+2) M 4ヒん due to 3mA.- 2tn 3mx6に ニ18V 3とん t 4-286+2+18 ニ 24.286v + V V =

24-286 V TRevinin Peristonee (Rta).- 3tn - 8.714 n 4kn Tuauinin uivalent circecit; 24.286U maxim n Power, for 24-288.14) CeL) /2.143 12.43 3 4 mA 12t24256 4x614 X103 2 Pnax 4Re G.921muw output power 23mt 16.72 mw. Input power こ y.o- 24-286メ1-394メ 33.SSmw. Ettiey ニ I692) 33.SS