ELECTRICAL WIRING:RESIDENT.-TEXT (PB)
19th Edition
ISBN: 9781337116213
Author: MULLIN
Publisher: CENGAGE L
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Chapter 12, Problem 22R
Electric fans produce a certain amount of noise. It is possible to compare the noise levels of different fans prior to installation by comparing their ______________ ratings.
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2-1) Lathi & Ding prob. 2.5-2 For the signals y(t) and x(t) shown below, find the component of the form
y(t) contained in x(t). In other words, find the optimum value of c in the approximation x(t) = cy(t) so that
the error signal energy is minimum. Also compute the error signal energy.
y(t)
x(t)
0
1
0
1
1. Is1 = 2ls2 = 4 × 10-16 A, B₁ = ẞ2 = 100, and R₁ = 5 kQ. Find the VB such that lx = 1 mA.
(30 points)
R1
ww
Q2
+
VB
Figure 1
2-2) Lathi & Ding prob. 2.6-1
2.6-1 Find the correlation coefficient p between of signal x(t) and each of the four pulses g1(1), 82(1),
83(1), and g4(f) shown in Fig. P2.6-1. To provide maximum margin against the noise along the
transmission path, which pair of pulses would you select for a binary communication?
Figure P.2.6-1
x(f)
(a)
8(1)
(b)
82(1)
(c)
1
1
sin 2πt
sin 4πt
-sin 2
0
0.707
83(1)
0
1
(d)
0
M
P
0.707
84(1)
(e)
0
0.5
-0.707
Chapter 12 Solutions
ELECTRICAL WIRING:RESIDENT.-TEXT (PB)
Ch. 12 - If everything on Circuit B7 were turned on, what...Ch. 12 - From what panelboard does the kitchen lighting...Ch. 12 - How many luminaires are connected to the kitchen...Ch. 12 - What color fluorescent lamps are recommended for...Ch. 12 - a. What is the minimum number of 20-ampere...Ch. 12 - Prob. 6RCh. 12 - Prob. 7RCh. 12 - Duplex receptacles connected to the 20-ampere...Ch. 12 - Prob. 9RCh. 12 - A fundamental rule regarding the grounding of...
Ch. 12 - How many circuit conductors enter the box a. where...Ch. 12 - Prob. 12RCh. 12 - Where is the speed control for the range hood fan...Ch. 12 - Who is to furnish the range hood? _____Ch. 12 - Prob. 15RCh. 12 - Complete the wiring diagram, connecting...Ch. 12 - Each 20-ampere small-appliance branch-circuit load...Ch. 12 - a. The Code requires a minimum of two...Ch. 12 - According to 210.52, no point along the floor line...Ch. 12 - Prob. 21RCh. 12 - Electric fans produce a certain amount of noise....Ch. 12 - Prob. 23RCh. 12 - Prob. 24RCh. 12 - Prob. 25RCh. 12 - Prob. 26RCh. 12 - Prob. 27RCh. 12 - The following is a layout for the lighting circuit...
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