EEET
EEET2249 Tutorial 3

# EEET2249 Tutorial 3 - EEET2249 Circuit Theory Tutorial 3...

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EEET2249 Tut-3 1 of 4 EEET2249 Circuit Theory Tutorial – 3: Ideal independent voltage and current sources Q1: In the circuits shown in Fig. Q1(a) & Q1(b), calculate the power absorbed by the three circuit elements. (voltage source, current source and the resistor.) Confirm that your answers satisfy the principle of conservation of energy . (Ans: (a) P I = -60 W, P V = +15 W, P R = +45 W.(b) P I = -10 W, P V = -6 W, P R = +16 W.) Q2: In the circuits shown in Fig.Q2, (a) determine the ammeter and voltmeter readings. (b) What are the power supplied by the sources and the power absorbed by the resistor? (Ans: (a) -2 A, 20 V, (b) Current source supplies 40 W; Voltage source absorbs 24 W; and the resistor absorbs 16 W.) Circuits with controlled sources Q3: In the circuit shown in Fig.Q3, calculate the source current i S . Check the power balance in the circuit. [Ans: i S = 0.5 A; Power absorbed, P 16V =-8 W, P 4 = 1 W, P cont = 7 W] Fig.Q3 4 A Fig.Q1(a) + - 15 V 5 Ω 2A Fig.Q1(b) + - 3 V 4 Ω + - A V 12 V Fig.Q2 2A + + 4 Ω 16 V 7v X 4 #1 + - + - v X + - i S

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EEET2249 Tut-3 2 of 4 Q4: In the circuit shown in Fig.Q4, calculate the
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• One '14
• Power, Resistor, Voltage source, Current Source

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