Question

Determine the Thevenin’s voltage across ‘ab’ terminals in the circuit shown below.

(a) 41.86∠0⁰

(b) 42.86∠0⁰

(c) 43.86∠0⁰

(d) 44.86∠0⁰

The question was asked in an internship interview.

My enquiry is from Thevenin’s Theorem in section Steady State AC Analysis of Network Theory

Answer 1

The correct choice is (b) 42.86∠0⁰

Best explanation: The voltage across the points a and b is called thevenin’s equivalent voltage. Thevenin’s equivalent voltage Vab=100∠0^o×j3/(j3+j4) = 42.86∠0^o V.