1: Choose appropriate letter a, b, c or 1. In a two-port network, the output short-circuit current was measured while the source voltage at the input was IV; the value of the output current would provide the parameter a) y21 c) y12 b) h21 d) Z12 2. For a constant gain k, log-magnitude curve in Bode plot is a) negative b) positive c) zero d) depending upon the value of k 3. A transformer is said to be ideal if it has a) coils are lossless b) unity-coupled c) coils have very large reactances d) all previously mentioned

1: Choose appropriate letter a, b, c or 1. In a two-port network, the output short-circuit current was measured while the source voltage at the input was IV; the value of the output current would provide the parameter a) y21 c) y12 b) h21 d) Z12 2. For a constant gain k, log-magnitude curve in Bode plot is a) negative b) positive c) zero d) depending upon the value of k 3. A transformer is said to be ideal if it has a) coils are lossless b) unity-coupled c) coils have very large reactances d) all previously mentioned

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Evaluate the discrete-time convolution sums given below. Also, obtain the same result usingDTFT(i.e., DTFT and then inverse DTFT) for both cases. a)y[n]=u[n+3]∗u[n−3] b)x[n]=u[n]−u[n−2], h[n]=(0.5)nu[n] this is a signal systems question
The channel capacity of a telephone line noiseless channel is 100 kbps with bandwidth (B-3 kHz). Find the following: --The value of M of the M-ary digital modulator -The new value of M that is needed to double the channel capacity. -The value of S/N ratio if the telephone line is considered as noisy channel.
A 3-Vrms signal is fed to a transmission line whose attenuation at a certain frequency is 0.002 Neper/meter. The length of the line is 3.5 kilometers and it is terminated using an amplifier whose input and output impedances are equal to the characteristic impedance of the line. The amplifier gain is 110 dB. The output of the amplifier is connected to a similar 3.5-kilometer line. The second line is terminated by its characteristic impedance. Determine the signal voltage at the load of the second line.
1- Draw the frequency response of the amplifier on a semi-log paper.2- From the frequency response plot, determine the −3 ?? cut-off frequencies ?? and ??of the amplifier, and find the bandwidth.3- Calculate the lower break frequencies ???, ???, and ??? due to the coupling and bypass capacitors. Find the dominant corner frequency and compare it with the measured value of ??.4- From your plot, determine the unity-gain frequency ??.5- Calculate the theoretical value of the mid-band gain, and compare it with the practically measured value.6- What is meant by one decade, and one octave?
(a) Draw the low-frequency and midband equivalent circuits for the common-gate amplifier as shown. (b) What are the lower-cutoff frequency and midband gain of the amplifier if the Q-point=(0.1 mA, 8.6 V), VGS − VT N = 0.7 V, C1 = 4.7 ΩF, C2 = 0.2 μF, and C3 = 0.1 μF?
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Problem 1 The transistor parameters for the given circuit are β = 100, VBE (on) = 0.7 V, and VA = ∞. Determine the midband gain AvM, corner frequencies fL and fH, and bandwidth BW of the given amplifier. Problem 2 Determine the corner frequencies and limiting horizontal asymptotes of a commonemitter amplifier with an emitter bypass capacitor. For the given circuit, RE = 4 kΩ, RC = 2 kΩ, RS = 0.5 kΩ, CE = 1 μF, V + = 5 V, and V − = −5 V. The transistor parameters are: β = 100, VBE(on) = 0.7 V, and ro = ∞.
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1. a) Analogue signals, such as audio and video, are digitised for transmission over a digital communication network. i) For a signal of bandwidth B Hz what is the minimum sampling rate at which the signal must be sampled to prevent distortion of the signal? ii) Show, using diagrams of the signal spectrum, why a signal that is not sampled at a sufficiently fast rate will suffer distortion. iii) An audio signal with a bandwidth of 0-20kHz is digitised with a sample resolution of 10 bits. What is the minimum bit rate required to transmit the audio signal? (Assume no data compression).
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