Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Reference texts: C. K. Alexander & M. N. O. Sadiku, Fundamentals of Electric Circuits (7th ed., McGraw-Hill) — series/parallel reduction, Thévenin’s theorem with dependent sources, maximum-power transfer, first-order RC transients, AC phasor mesh analysis, complex power / power factor, and Laplace-domain (s-domain) circuit analysis; W. H. Hayt, J. E. Kemmerly & S. M. Durbin, Engineering Circuit Analysis (9th ed.) — companion treatment of the second-order source-driven RLC network and the initial-condition models used in Q6.
Closed-book national examination, 3 hours, six questions of equal value; any five constitute a complete paper. All six are solved here. A Laplace-transform table and a star–delta conversion table are supplied on the last two pages of the exam. Phasor magnitudes are quoted as magnitude $\angle$ angle with angles in degrees; a common cosine time reference is used, and the source marked rms in Q5 is treated as rms.
