EBK FUNDAMENTALS OF ELECTRIC CIRCUITS
6th Edition
ISBN: 8220102801448
Author: Alexander
Publisher: YUZU
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Chapter 13, Problem 76P
Using Fig. 13.138, design a problem to help other students better understand a Y-Δ, three-phase transformer and how they work.
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Chapter 13 Solutions
EBK FUNDAMENTALS OF ELECTRIC CIRCUITS
Ch. 13.2 - Determine the voltage Vo in the circuit of Fig....Ch. 13.2 - Determine the phasor currents I1 and I2 in the...Ch. 13.3 - Prob. 3PPCh. 13.4 - Find the input impedance of the circuit in Fig....Ch. 13.4 - For the linear transformer in Fig. 13.26(a), find...Ch. 13.4 - Solve the problem in Example 13.1 (see Fig. 13.9)...Ch. 13.5 - The primary current to an ideal transformer rated...Ch. 13.5 - In the ideal transformer circuit of Fig. 13.38,...Ch. 13.5 - Find Vo in the circuit of Fig. 13.40. Figure 13.40...Ch. 13.6 - Refer to Fig. 13.43. If the two-winding...
Ch. 13.6 - In the autotransformer circuit of Fig. 13.45, find...Ch. 13.7 - Prob. 12PPCh. 13.8 - Prob. 13PPCh. 13.9 - Refer to Fig. 13.61. Calculate the turns ratio...Ch. 13.9 - Calculate the turns ratio of an ideal transformer...Ch. 13.9 - In Example 13.17, if the eight 100-W bulbs are...Ch. 13 - Refer to the two magnetically coupled coils of...Ch. 13 - Prob. 2RQCh. 13 - Prob. 3RQCh. 13 - Prob. 4RQCh. 13 - The ideal transformer in Fig. 13.70(a) has N2/N1 =...Ch. 13 - Prob. 6RQCh. 13 - A three-winding transformer is connected as...Ch. 13 - Prob. 8RQCh. 13 - Prob. 9RQCh. 13 - Prob. 10RQCh. 13 - For the three coupled coils in Fig. 13.72,...Ch. 13 - Using Fig. 13.73, design a problem to help other...Ch. 13 - Two coils connected in series-aiding fashion have...Ch. 13 - (a) For the coupled coils in Fig. 13.74(a), show...Ch. 13 - Two coils are mutually coupled, with L1 = 50 mH,...Ch. 13 - Given the circuit shown in Fig. 13.75, determine...Ch. 13 - For the circuit in Fig. 13.76, find Vo. Figure...Ch. 13 - Find v(t) for the circuit in Fig. 13.77.Ch. 13 - Prob. 9PCh. 13 - Find vo in the circuit of Fig. 13.79. Figure 13.79...Ch. 13 - Use mesh analysis to find ix in Fig. 13.80, where...Ch. 13 - Determine the equivalent Leq in the circuit of...Ch. 13 - For the circuit in Fig. 13.82, determine the...Ch. 13 - Obtain the Thevenin equivalent circuit for the...Ch. 13 - Find the Norton equivalent for the circuit in Fig....Ch. 13 - Obtain the Norton equivalent at terminals a-b of...Ch. 13 - In the circuit of Fig. 13.86, ZL is a 15-mH...Ch. 13 - Find the Thevenin equivalent to the left of the...Ch. 13 - Determine an equivalent T-section that can be used...Ch. 13 - Determine currents I1, I2, and I3 in the circuit...Ch. 13 - Prob. 21PCh. 13 - Find current Io in the circuit of Fig. 13.91.Ch. 13 - Let is = 5 cos (100t) A. Calculate the voltage...Ch. 13 - In the circuit of Fig. 13.93, (a) find the...Ch. 13 - Prob. 25PCh. 13 - Find Io in the circuit of Fig. 13.95. Switch the...Ch. 13 - Find the average power delivered to the 50-...Ch. 13 - In the circuit of Fig. 13.97, find the value of X...Ch. 13 - Prob. 29PCh. 13 - (a) Find the input impedance of the circuit in...Ch. 13 - Using Fig. 13.100, design a problem to help other...Ch. 13 - Two linear transformers are cascaded as shown in...Ch. 13 - Determine the input impedance of the air-core...Ch. 13 - Using Fig. 13.103, design a problem to help other...Ch. 13 - Find currents I1, I2, and I3 in the circuit of...Ch. 13 - As done in Fig. 13.33, obtain the relationships...Ch. 13 - A 2402,400-V rms step-up ideal transformer...Ch. 13 - Design a problem to help other students better...Ch. 13 - A 1,200240-V rms transformer has impedance on the...Ch. 13 - The primary of an ideal transformer with a turns...Ch. 13 - Given I2 = 2 A, determine the value of Is in Fig....Ch. 13 - For the circuit in Fig. 13.107, determine the...Ch. 13 - Obtain V1 and V2 in the ideal transformer circuit...Ch. 13 - In the ideal transformer circuit of Fig. 13.109,...Ch. 13 - For the circuit in Fig. 13.110, find the value of...Ch. 13 - (a) Find I1 and I2 in the circuit of Fig. 13.111...Ch. 13 - Prob. 47PCh. 13 - Using Fig. 13.113, design a problem to help other...Ch. 13 - Find current ix in the ideal transformer circuit...Ch. 13 - Prob. 50PCh. 13 - Use the concept of reflected impedance to find the...Ch. 13 - For the circuit in Fig. 13.117, determine the...Ch. 13 - Refer to the network in Fig. 13.118. (a) Find n...Ch. 13 - A transformer is used to match an amplifier with...Ch. 13 - For the circuit in Fig. 13.120, calculate the...Ch. 13 - Find the power absorbed by the 100- resistor in...Ch. 13 - For the ideal transformer circuit of Fig. 13.122...Ch. 13 - Determine the average power absorbed by each...Ch. 13 - In the circuit of Fig. 13.124, let vs = 165...Ch. 13 - Refer to the circuit in Fig. 13.125 on the...Ch. 13 - For the circuit in Fig. 13.126, find Il, I2, and...Ch. 13 - For the network in Fig. 13.127, find: (a) the...Ch. 13 - Find the mesh currents in th circuit of Fig....Ch. 13 - For the circuit in Fig. 13.129. find the turns...Ch. 13 - Calculate the average power dissipated by the 20-...Ch. 13 - Design a problem to help other students better...Ch. 13 - An autotransformer with a 40 percent tap is...Ch. 13 - In the ideal autotransformer of Fig. 13.131,...Ch. 13 - In the circuit of Fig. 13.131, N1 = 190 turns and...Ch. 13 - In the ideal transformer circuit shown in Fig....Ch. 13 - When individuals travel, their electrical...Ch. 13 - In order to meet an emergency, three single-phase...Ch. 13 - Figure 13.135 on the next page shows a three-phase...Ch. 13 - Consider the three-phase transformer shown in Fig....Ch. 13 - A balanced three-phase transformer bank with the...Ch. 13 - Using Fig. 13.138, design a problem to help other...Ch. 13 - The three-phase system of a town distributes power...Ch. 13 - Use PSpice or MultiSim to determine the mesh...Ch. 13 - Use PSpice or MultiSim to find I1, I2, and I3 in...Ch. 13 - Prob. 80PCh. 13 - Use PSpice or MultiSim to find I1, I2, and I3 in...Ch. 13 - A stereo amplifier circuit with ail output...Ch. 13 - A transformer having 2,400 turns on the primary...Ch. 13 - A radio receiver has an input resistance of 300 ....Ch. 13 - A step-down power transformer with a turns ratio...Ch. 13 - A 240120-V rms power transformer is rated at 10...Ch. 13 - A 4-kVA, 2,400240-V rms transformer has 250 turns...Ch. 13 - A 25,000240-V rms distribution transformer has a...Ch. 13 - A 4,800-V rms transmission line feeds a...Ch. 13 - A four-winding transformer (Fig. 13.146) is often...Ch. 13 - A 440/110-V ideal transformer can be connected to...Ch. 13 - Ten bulbs in parallel are supplied by a 7,200120-V...
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- A transistor with ẞ=100 is biased to operate at a dc collector current of 0.5mA. Find the values of gm гл, and re. Repeat for a bias current of 50uA.arrow_forwardUse the MATLAB function ‘fft’ to compute the DFT for the following function: f (t)= 1.5 + 1.8 cos(2π(12)t) + 0.8 sin(2π(20)t) - 1.25 cos(2π(28)t) Take n=64 samples with a sampling frequency of fs = 128 samples/s. Have your script compute values of △t, tn, △f, fmin, and fmax, and generate plots f(t) versus time (s), Real component versus frequency, Imaginary component versus frequency, and power spectrum vs frequency.arrow_forwardUsing the T model, show that the input resistance between base and emitter, looking in to the base, is equal to г.arrow_forward
- +3 V 10 ΚΩ - Vc + % VC+% 2) /= 0.2 mA Fig. 1arrow_forward. For the general amplifier circuit shown in Fig. 4 neglect the Early effect. a) Find expressions for Ve/Vaig and ve/Vsig b) If Vsig is disconnected from node X, node X is grounded, and node Y is disconnected from ground and connected to Vsig, find the new expression for Vo/Vsigarrow_forward. For the circuit in Fig. 3, let Rsig >>re, and a≈1. Find Vo.arrow_forward
- 3. Calculate the indicated currents and voltages for the circuit Figure 3 R₁₂ 8 ΚΩ R₁ w 4 ΚΩ R3 ww a R6 W 12kQ W + R₁ RA 24 ΚΩ Ι E = 72 V V7 RS 15 b W 12 ΚΩ 12 k Figure 3 9 ΚΩ Ro W 6kN 3 ΚΩ R8arrow_forward2. Find the voltages V₁, V3, Vab and current I, for the circuit Figure 2 E₁6V + R3 www 60 + V3 - R₁ www 50 + V₁- α Vab RA www 20 R₂ w 3Ω 18 VE₂ Iarrow_forward3. a) Given the circuit shown below in figure P3, compute the capacitor voltage, vc(t), for t≥ 0 utilizing the generalized equation presented in lecture. Assume the "make-before-break" switch shown in figure P3 is ideal and makes the transition from position A to position B in zero time. The current and voltage conventions shown must be used in the analysis to receive any credit. b) Use your answer to part 3(a) above and the relationship between the capacitor voltage, vc(t), and the capacitor current, ic(t), shown below in equation P3 to compute ic(t) for t≥0. = Equation P3: ic(t) C dvc(t) dt A B t = 0 == V₁(t) R₁ = 20[k] + [i,(t) V2(t) VS1 = 100[V] + Vs2=200[V] C + + R₂ = 20[k2] i2(t) V3(t) = vc(t) + ↓ iz(t) R3 = 20[k≤2] Figure P3 |↓ic(t) vc(t): C = 1[μF]arrow_forward
- 4. a) Given the circuit shown below in figure P4, compute the inductor current, iL(t), for t≥ 0 utilizing the generalized equation presented in lecture. Assume the "make-before-break" switch shown in figure P4 is ideal and makes the transition from position A to position B in zero time. The current and voltage conventions shown must be used in the analysis to receive any credit. b) Use your answer to part 4(a) above and the relationship between the inductor current, i₁(t), and the inductor voltage, VL(t), shown below in equation P4 to compute VL(t) for t≥0. Equation P4: V₁ (t) = L diL(t) dt V₁(t) + R₁ = 100[2] i₁(t) VS1 = 100[V] A t=0 B t = 0 + R₂ = 100[2] V2(t) + Tiz(t) V3(t) = vc(t) + VS2 = 200[V] + C Figure P4 | iz(t) R3 = 100[2] + ↓iL(t) VL(t) L = 1[H]arrow_forwardFor the network in Figure 2, determine currents 14 and I, and voltage V2. R₁ 6.8 ΚΩ + R 8.2 ΚΩ E 12 V R₁₂ 18 k≤2 Vs R₁ 2 ks Figure 2: Circuit diagram for Q.1(b')arrow_forward2. a) Given the circuit shown below in figure P2, compute the inductor current, iL(t), for t≥ 0 utilizing the generalized equation method presented in lecture. Assume the switch shown in figure P2 is ideal and opens in zero time at t = 0[s]. The current and voltage conventions shown must be used in the analysis to receive any credit. b) Use your answer to part 2(a) above and the relationship between the inductor current, iL(t), and the inductor voltage, VL(t), shown below in equation P2 to compute VL(t) for t≥ 0. Equation P2: v₁ (t) = L di(t) dt Vs = 100[V] + I₁ R₁ = 100[2] + ww ས་ t=0 १) 1 V₂(t) + i2(t) R₂ = 200[2] VL(t) B Figure P2 iL(t) V3(t) L = 1[H] + ↓ iz(t) R3 = 200[2]arrow_forward
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