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Q1) Choose the most correct answer: * For the circuit in Fig.1c, answer (1, 2, and 3) 1) The resistance RN as seen from R₂ in (22) is: A) 5.33 B) -5.33 C) 3.33 D) 2.25 2) The voltage Vth as seen from RL in (v) is: B) 12 C) 52 D) 33 A) 45 E) -12 F) 48 G) none 3) The maximum power that could be dissipated in RL in (watt) is: A) 88.75 C) 90.33 D) 22.35 B) 75 E) 155 F) 126.75 G) none 4) When one of four parallel resistors is removed from a circuit and the circuit is reconnected, the voltage. A) decreases by one-fourth C) quadruples B) unchanged D) decreases by the amount of current through the removed resistor E) increases * For the circuit in Fig. 1a use superposition to find the voltage V, in (5, 6, and 7) 5) The voltage V, due to 3A source only in (v) is: A) 3 C) 12 D) 10 B) 15 E) 2 F) -2 G) none 6) The voltage Vx due to 20V source only in (v) is: A) 3 C) 12 D) 10 B) 15 E) 2 F) -2 G) none 7) The voltage V, due to 12V source only in (v) is: C) 12 D) 10 A) 3 B) 15 E) 2 G) none + 12V 60 492 V₁ 3A 30V 200 6A 80ΩΣ fig.lc 8) The minimum and maximum resistance for 45KQ2 with a tolerance of 10% in kQ are : A) 43.5, 47.5 B) 40.5, 49.5 C) 44, 46 D) 40, 50 E) 44.5, 45.5 F) none 9) There are 4 resistors in a series cct and each resistor has 12V dropped across it. The source voltage is: A) 30V B) 33V C) 48V E) it depends on the resistor values D) it depends on the current F)none 10) If Vi(t)=5cos(100 x t- 40°); V2(t)=3cos(100 nt+ 70°) then V₂ lags V₁ by: F) none A) 60⁰ B) 20⁰ C) -20° D)-110 E) -60° www 89 392 E) 7.5 F) -2 202 F) 18 G) none www 29 20V fig.la