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25-Nav-B6 Ocean Engineering and Offshore Structures: Undated paper

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Current Transfer Ratio of a Three-Transistor Current Mirror
  2. Question 2 Combinational Logic — NAND Network and a NOR-only EOR
  3. Question 3 Linear DC Machine — Motoring and Generating on a Rail Pair
  4. Question 4 Transformer Magnetic Circuit and Maximum Power Transfer
  5. Question 5 Transfer Function of a Three-Op-Amp Instrumentation Amplifier
  6. Question 6 DC Test and Slip Behaviour of an Induction Motor
  7. Question 7 First-Order RC Network — Step Response and Frequency Response
  8. Question 8 Industrial Load — Power-Factor Correction and Transmission Loss

Start with Question 1 →

Paper format. PEO National Examinations, May 2019 — 98-Mar-B6, printed for Electrical & Electronics Engineering / Mechanical Engineering candidates. Three hours, closed book, two approved calculators (Casio or Sharp). Eight questions of equal value; any five constitute a complete paper, and only the first five appearing in the answer book are marked. Constants supplied on the front page: $\pi = 3.14159$, $1\ \text{hp} = 746\ \text{W}$. All eight questions are solved here so the solutions cover whichever five a candidate chooses.

Subject note

This paper is listed under 25-Nav-B6 “Ocean Engineering and Offshore Structures”, but the printed paper is headed 98-Mar-B6 (front page: 98-Elec-B6) and every question is Electrical & Electronics Engineering content (BJT current-mirror analysis, combinational logic, a linear dc machine, a gapped/parallel-path transformer magnetic circuit, a three-op-amp instrumentation amplifier, an induction-motor dc test and slip calculation, an RC transient/frequency-response network, and industrial power-factor correction) — zero naval-architecture or ocean-engineering content. Solved as the exam actually printed.

Reference texts
  • Sedra & Smith, Microelectronic Circuits, 8th ed. — BJT current mirrors (Ch. 8), op-amp circuits (Ch. 2).
  • Mano & Ciletti, Digital Design, 6th ed. — Boolean algebra and De Morgan’s theorems (Ch. 2), NAND/NOR universal gates (Ch. 3).
  • Fitzgerald, Kingsley & Umans, Electric Machinery, 7th ed. — elementary electromechanical energy conversion / the linear dc machine (Ch. 3).
  • Chapman, Electric Machinery Fundamentals, 5th ed. — transformers (Ch. 2), induction motors and the dc test (Ch. 6).
  • Sadiku & Alexander, Fundamentals of Electric Circuits, 7th ed. — ac power and power-factor correction (Ch. 11), first-order transients (Ch. 7), frequency response (Ch. 14).