Question

og attem ch Rahila N. Gadi for Sem II 2020 For Sem 1! 2020 / FINAL ASSIGNMENT: QUESTIONS AND ANSWER SHEET / Final Online Assignment Que 4 Calculate the value of Re which will absorb maximum power from the circuit and compute the value of maximum power for the given circuit (7 Marks) 100 120 v 5 0 6 A 2 А" В І EE % wer in the Word document (ANSWER SHEET) and Upload as attachment below For the circuit given below fled the The voltage between the A

Answer 1

(A Find the thevenin equivalent ciocuit across AB Thevenin Voltage (VT) 102 wie + 120V 52 Vio GA - Let ir iz be mesh currents of meshes 0 8 respectively current 12 - -6A Apply kvL for mesh 0 : -120 t lovi +5 Cir-12) =0 substitute iza -6A - - 120 + lopi +51, -5(-6) = 0 1511 120 – 30

-) 90 15 - 6 Amperes Vih T 5 (1,-12) 516+6) 5(6-6-6) : Vin= Vith 60 volts Thevenin Resistance (Rin) - Rh is the equivalent resistance across AB and current source with voltage Sources shorted opened. lor RM 512 - ) Rih lor parllel to 512 Rih lo 10 (5) 10+5 Къ logo

The venin equivalent circuit Rih= logo RL With= bov -> For maximum power transfer RL Rth =) RL 10 3 2 3.333 2 → tos bov who 2 60 11 9 A . I = ok (4+) - I’RL = (9)*(_) maximum power Pmax = : Pmax = 270 watts -) RL = 3.3332 Pmax= 270 w