Electrical Engineering: Principles & Applications, 7th Edition
7th Edition
ISBN: 9780134485201
Author: Allan R. Hambley
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 2.61P
Find the equivalent resistance looking into terminals for the network shown in Figure P2.61. [Hint: First, connect a 1-A current source across terminals a and b. Then, solve the network by the node-voltage technique. The voltage across the current source is equal in value to the equivalent resistance.]
Figure P2.61
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Chapter 2 Solutions
Electrical Engineering: Principles & Applications, 7th Edition
Ch. 2 - Reduce each of the networks shown in Figure P2.1...Ch. 2 - A 4- resistance is in series with the parallel...Ch. 2 - Find the equivalent resistance looking into...Ch. 2 - Suppose that we need a resistance of 1.5 k and...Ch. 2 - Find the equivalent resistance between terminals a...Ch. 2 - Find the equivalent resistance between terminals a...Ch. 2 - What resistance in parallel with 120 results in...Ch. 2 - Determine the resistance between terminals a and b...Ch. 2 - Two resistances having values of R and 2R are in...Ch. 2 - A network connected between terminals a and b...
Ch. 2 - Two resistances R1 and R2 are connected in...Ch. 2 - Find the equivalent resistance for the infinite...Ch. 2 - If we connect n 1000- resistances in parallel,...Ch. 2 - The heating element of an electric cook top has...Ch. 2 - We are designing an electric space heater to...Ch. 2 - Sometimes, we can use symmetry considerations to...Ch. 2 - The equivalent resistance between terminals a and...Ch. 2 - Three conductances G1 G2, and G3 are in series....Ch. 2 - Most sources of electrical power behave as...Ch. 2 - The resistance for the network shown in Figure...Ch. 2 - Often, we encounter delta-connected loads such as...Ch. 2 - What are the steps in solving a circuit by network...Ch. 2 - Find the values of i1 and i2 in Figure P2.23....Ch. 2 - Find the voltages v1 and v2 for the circuit shown...Ch. 2 - Find the values of v and i in Figure P2.25. Figure...Ch. 2 - Consider the circuit shown in Figure P2.24....Ch. 2 - Find the voltage v and the currents i1 and 12 for...Ch. 2 - Find the values of vs, v1, and i2 in Figure P2.28....Ch. 2 - Find the values of i1 and i2 in Figure P2.29....Ch. 2 - Consider the cirrcuit shown in Figure P2.30 Find...Ch. 2 - Solve for the values of i1, i2, and the powers for...Ch. 2 - The 12-V source in Figure P2.32 is delivering 36...Ch. 2 - Refer to the circuit shown in Figure P2.33. With...Ch. 2 - Find the values of i1 and i2 in Figure P2.34. Find...Ch. 2 - Find the values of i1 and i2 in Figure P2.35...Ch. 2 - Use the voltage-division principle to calculate...Ch. 2 - Use the current-division principle to calculate i1...Ch. 2 - Use the voltage-division principle to calculate...Ch. 2 - Use the current-division principle to calculate...Ch. 2 - Suppose we need to design a voltage-divider...Ch. 2 - A source supplies 120 V to the series combination...Ch. 2 - We have a 60- resistance, a 20- resistance, and...Ch. 2 - A worker is standing on a wet concrete floor,...Ch. 2 - Suppose we have a load that absorbs power and...Ch. 2 - We have a load resistance of 50 that we wish to...Ch. 2 - We have a load resistance of 1 k that we wish to...Ch. 2 - The circuit of Figure P2.47 is similar to networks...Ch. 2 - Write equations and solve for the node voltages...Ch. 2 - Solve for the node voltages shown in Figure P2.49....Ch. 2 - Solve for the node voltages shown in Figure P2.50....Ch. 2 - Given R1=4 , R2=5 , R2=8 , R4=10 , R5=2 , and...Ch. 2 - Determine the value of i1 in Figure P2.52 using...Ch. 2 - Given R1=15 , R5=5 , R3=20 , R4=10 , R5=8 , R6=4 ,...Ch. 2 - In solving a network, what rule must you observe...Ch. 2 - Use the symbolic features of MATLAB to find an...Ch. 2 - Solve for the values of the node voltages shown in...Ch. 2 - Solve for the node voltages shown in Figure P2.57....Ch. 2 - Solve for the power delivered to the 8- ...Ch. 2 - Solve for the node voltages shown in Figure P2.59....Ch. 2 - Find the equivalent resistance looking into...Ch. 2 - Find the equivalent resistance looking into...Ch. 2 - Figure P2.62 shows an unusual voltage-divider...Ch. 2 - Solve for the node voltages in the circuit of...Ch. 2 - We have a cube with 1- resistances along each...Ch. 2 - Solve for the power delivered to the 15- resistor...Ch. 2 - Determine the value of v2 and the power delivered...Ch. 2 - Use mesh-current analysis to find the value of i1...Ch. 2 - Solve for the power delivered by the voltage...Ch. 2 - Use mesh-current analysis to find the value of v...Ch. 2 - Use mesh-current analysis to find the value of i3...Ch. 2 - Use mesh-current analysis to find the values of i1...Ch. 2 - Find the power delivered by the source and the...Ch. 2 - Use mesh-current analysis to find the values of i1...Ch. 2 - Use mesh-current analysis to find the values of i1...Ch. 2 - The circuit shown in Figure P2.75 is the dc...Ch. 2 - Use MATLAB and mesh-current analysis to determine...Ch. 2 - Connect a 1-V voltage source across terminals a...Ch. 2 - Connect a 1-V voltage source across the terminals...Ch. 2 - Use MATLAB to solve for the mesh currents in...Ch. 2 - Find the Thévenin and Norton equivalent circuits...Ch. 2 - We can model a certain battery as a voltage source...Ch. 2 - Find the Thévenin and Norton equivalent circuits...Ch. 2 - Find the Thévenin and Norton equivalent circuits...Ch. 2 - Find the Thévenin arid Norton equivalent circuits...Ch. 2 - An automotive battery has an open-circuit voltage...Ch. 2 - A certain two-terminal circuit has an open-circuit...Ch. 2 - If we measure the voltage at the terminals of a...Ch. 2 - Find the Thévenin and Norton equivalent circuits...Ch. 2 - Find the maximum power that can be delivered to a...Ch. 2 - Find the maximum power that can be delivered to a...Ch. 2 - Figure P2.91 shows a resistive load RL connected...Ch. 2 - Starling from the Norton equivalent circuit with a...Ch. 2 - A battery can be modeled by a voltage source Vt in...Ch. 2 - Use superposition to find the current i in Figure...Ch. 2 - Solve for is in Figure P2.49 by using...Ch. 2 - Solve the circuit shown in Figure P2.48 by using...Ch. 2 - Solve for i1 in Figure P2.34 by using...Ch. 2 - Another method of solving the circuit of Figure...Ch. 2 - Use the method of Problem P2.98 for the circuit of...Ch. 2 - Solve for the actual value of i6 for the circuit...Ch. 2 - Device A shown in Figure P2.101 has v=3i2 for i 0...Ch. 2 - The Wheatstone bridge shown in Figure 2.66 is...Ch. 2 - The Wheatstone bridge shown in Figure 2.66has...Ch. 2 - In theory, any values can be used for R1 and R3 in...Ch. 2 - Derive expressions for the Thévenin voltage and...Ch. 2 - Derive Equation 2.93 for the bridge circuit of...Ch. 2 - Prob. 2.107PCh. 2 - Explain what would happen if, in wiring the bridge...Ch. 2 - Match each entry in Table T2.1(a) with the best...Ch. 2 - Consider the circuit of Figure T2.2 with vs=96V ,...Ch. 2 - Write MATLAB code to solve for the node voltages...Ch. 2 - Write a set of equations that can be used to solve...Ch. 2 - Determine the Thévenin and Norton equivalent...Ch. 2 - According to the superposition principle, what...Ch. 2 - Determine the equivalent resistance between...Ch. 2 - Transform the 2-A current source and 6- ...
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