Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
98-Comp-A1, Electronics — National Exams, December 2015. Open-book, 3 hours; seven 20-mark questions, five to be marked (all seven answered below as a complete study resource, per the standing "answer all M" rule). Unless stated otherwise, diode drops $V_D=0.7\text{V}$.
Reference texts: Sedra & Smith, Microelectronic Circuits (diode limiters/rectifiers/clampers, MOSFET/BJT small-signal amplifiers, active loads and current mirrors, active-RC filters, differential pairs with current-mirror loads, op-amp astable multivibrators, CMOS inverter design and delay, clocked cross-coupled latches, current-steering DACs) — the single reference text covering every question on this paper.