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Electrical Engineering: Principles & Applications
172 SOLVED PROBLEMS
Question: 9.7
Analysis Using a Piecewise-Linear Model Use the circuit models found in Example 9.6 to solve for the current in the circuit of Figure 9.20(a). ...
Question: 9.6
Piecewise-Linear Model for a Zener Diode Find circuit models for the Zener-diode volt–ampere characteristic shown in Figure 9.19. Use the straight-line segments shown. ...
Question: 9.5
Analysis by Assumed Diode States Use the ideal-diode model to analyze the circuit shown in Figure 9.16(a). Start by assuming that D1 is off and D2 is on. ...
Question: 9.4
Analysis of a Zener-Diode Regulator with a Load Consider the Zener-diode regulator circuit shown in Figure 9.12(a). The diode characteristic is shown in Figure 9.13. Find the load voltage vL and source current IS if VSS = 24 V, R = 1.2 kΩ, and RL = 6 kΩ. ...
Question: 9.3
Load-Line Analysis of a Zener-Diode Voltage Regulator The voltage-regulator circuit of Figure 9.9 has R = 1 kΩ and uses a Zener diode having the characteristic shown in Figure 9.10. Find the output voltage for VSS = 15 V. Repeat for VSS = 20 V. ...
Question: A.5
Complex Arithmetic in Polar Form Given Z1 = 10∠60° and Z2 = 5∠45°, find Z1Z2, Z1/Z2, and Z1 + Z2 in polar form. ...
Question: A.4
Exponential Form of a Complex Number Express the complex number Z = 10∠60° in exponential and rectangular forms. Sketch the number in the complex plane. ...
Question: A.3
Rectangular-to-Polar Conversion Convert Z5 = 10 + j5 and Z6 = -10 + j5 to polar form. ...
Question: A.1
Complex Arithmetic in Rectangular Form Given that Z1 = 5 + j5 and Z2 = 3 – j4, reduce Z1 + Z2, Z1 – Z2, Z1Z2, and Z1/Z2 to rectangular form. ...
Question: 16.5
Power-Factor Control A 480-V-rms 200-hp 60-Hz eight-pole delta-connected synchronous motor operates with a developed power (including losses) of 200 hp and a power factor of 85 percent lagging. The synchronous reactance is Xs = 1.4 Ω. The field current is If = 10 A. What must the new field current ...
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