MATERIALS SCIENCE+ENGINEERING:WILEY PLUS
10th Edition
ISBN: 9781119815242
Author: Callister
Publisher: WILEY
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Chapter 1, Problem 3QAP
To determine
The three items that are made from ceramic materials, the specific ceramic material used for each item and its characteristic.
Expert Solution & Answer
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schedule01:11
Students have asked these similar questions
+
Preemphasis
LHS
R
signal
L RHS
signal
Frequency
doubler
Pilot
tone
(a)
+
Preemphasis
Composite
baseband
spectrum
L+R
Pilot tone
L-R
(DSB-SC)
+
FM
modulator
f (kHz)
(b)
15 19 23
38
53
Lowpass
filter
Deemphasis
+
L
Audio
amplifier
FM
discriminator
Narrowband
filter
Frequency
doubler
Bandpass
R
Audio
✗
Deemphasis
+
filter
amplifier
(c)
and (c) FM stereo receiver.
FIGURE A.25 FM stereo broadcasting: (a) FM stereo transmitter, (b) spectrum of FM stereo signal,
4-3) Similar to Lathi & Ding, Prob. P.4.2-3
For a DSB-SC signal g(t) = 2m(t)cos(4000) transmitting each of the following messages,
(a) write an expression for G(f) and
(b) sketch the magnitude spectrum |G(f)], specifying the FWHM (full width at half-maximum) of any spectrum
peaks.
a)
m(t) = sinc²(100-50л)
b)
m(t)=400e-80,000r²
4-2) Lathi & Ding, similar to problem 3.8-5.
For the filter shown below, with an input signal whose PSD is given by S⭑(f) = П(0.25лf):
(a) Find the total input power;
(b) Find the transfer function H(f);
(c) Find the power spectral density (PSD) of the output signal;
(d) Find the total output power of the signal
500 ΚΩ
d
1 µF
dt
y(t)
Chapter 1 Solutions
MATERIALS SCIENCE+ENGINEERING:WILEY PLUS
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