Electrical Engineering: Principles & Applications 7th. Edition by Allan R. Hambley | 9781292223124 | 129222312X | Holooly

Basic Electrical

Electrical Engineering: Principles & Applications

175 SOLVED PROBLEMS

Question: 11.2

Calculating Performance of Cascaded Amplifiers Consider the cascade connection of the two amplifiers shown in Figure 11.6. Find the current gain, voltage gain, and power gain of each stage and for the overall cascade connection. ...

Verified Answer:

Considering loading by the input resistance of the...

Question: 6.3

Calculation of RC Lowpass Output Suppose that an input signal given by vin(t) = 5 cos(20πt) + 5 cos(200πt) + 5 cos(2000πt) is applied to the lowpass RC filter shown in Figure 6.9. Find an expression for the output signal. ...

Verified Answer:

The filter has the form of the lowpass filter anal...

Question: 2.2

Circuit Analysis Using Series/Parallel Equivalents Find the current, voltage, and power for each element of the circuit shown in Figure 2.5(a). ...

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First, we combine resistances in series and parall...

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). ...

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Since the 3-V source has a polarity that results i...

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. ...

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For line segment A of Figure 9.19, the intercept o...

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. ...

Verified Answer:

With

D_1

off and

D_2

...

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. ...

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First, consider the circuit as redrawn in Figure 9...

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. ...

Verified Answer:

The load lines for both values of

V_{SS}[/l...

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. ...

Verified Answer:

For the product, we have

Z_1 \times Z_2=10 ...

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. ...

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Conversion from polar to exponential forms is base...

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