ECE159H1 Midterm: ECE159_2011_ts_1304436224
31 Jan 2019
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07(ba2159 f11-12) (you lose one point for incorrect tutorial section information) Test 2 answer all questions (non-programmable calculators allowed) 1: circuit for question 1: find the open-circuit circuit voltage between terminals a and b. Kcl at node m: 2+ix+2ix=0 ix=-0. 6667 ma [1 point] But from the bottom mesh: ir=2ix =-1. 333 ma[0. 5 point] A-b = 12-1. 333 = 10. 6667 v [0. 5 point: find the short-circuit circuit current between terminals a and b. Kcl at node m: 2+ix+2ix=0 ix=-0. 6667 ma [0. 5 point] Kcl at node b (inside the hashed box) Where by kvl in outer loop 12+vr=0 vr=-12 v. Is. c. a-b = 2x-0. 6667 (-12) = 10. 6667 ma [0. 5 point: find the value of rl for the maximum power transfer condition. For maximum power transfer rl = rth = vo. c. a-b / is. c. a-b [1 point] Rl = 1 k : if rl = 4 k , find the voltage vo [2 points]
