1.

In the circuit given below, the value of RL for maximum power transfer is ___________(a) 2.4 Ω(b) 2.6 Ω(c) 2.8 Ω(d) 3.0 ΩThis question was posed to me in an online quiz.This intriguing question originated from Advanced Problems on Network Theorems in section Useful Theorems in Circuit Analysis of Network Theory

Answer»

The correct option is (C) 2.8 Ω

Easiest explanation: Using Y-∆ TRANSFORMATION,

RAB = (9+9 || 6) || (9||6)

= (18 || 6) || (9 || 6)

=\(\LEFT(\FRAC{18×6}{18+6}\right) || \left(\frac{9×6}{9+6}\right)\)

= 4.5 || 3.6

= \(\frac{4.5×3.6}{4.5+3.6}\) = 2.8 Ω.



Discussion

No Comment Found

Related InterviewSolutions