Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 6, Problem 35R
Which of the following installations for a kitchen waste disposal that operates on a 15-ampere, 120-volt branch circuit requires AFCI protection? (Circle the correct answer.)
- a. The disposal operates by a switch that is installed above the kitchen counter.
- b. The disposal operates by a switch that is installed under the counter next to the disposal.
- c. Both (a) and (b)
- d. Neither (a) nor (b).
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PSD
A certain signal f(t) has the following PSD (assume 12 load):
| Sƒ(w) = π[e¯\w\ + 8(w − 2) + +8(w + 2)]
(a) What is the mean power in the bandwidth w≤ 1 rad/sec?
(b) What is the mean power in the bandwidth 0.99 to 1.01 rad/sec?
(c) What is the mean power in the bandwidth 1.99 to 2.01 rad/sec?
(d) What is the total mean power in (t)?
Pav=
+
2T
SfLw) dw
- SALW)
An AM modulation waveform signal:-
p(t)=(8+4 cos 1000πt + 4 cos 2000πt) cos 10000nt
(a) Sketch the amplitude spectrum of p(t).
(b) Find total power, sideband power and power efficiency.
(c) Find the average power containing of each sideband.
Can you rewrite the solution because it is
unclear?
AM
(+) = 8(1+ 0.5 cos 1000kt +0.5 ros 2000ks)
=
cos 10000 πt.
8 cos wat + 4 cos wit + 4 cos Wat coswet.
-Jet
jooort
J11000 t
= 4 e
jqooort jgoort
+4e
+ e
+e
j 12000rt.
12000 kt
+
e
+e
jooxt
igoo t
te
(w) = 8ES(W- 100007) + 8IS (W-10000)
USB
Chapter 6 Solutions
Electrical Wiring Residential
Ch. 6 - Explain the operation of a ground-fault circuit...Ch. 6 - Prob. 2RCh. 6 - Where must GFCI receptacles be installed in...Ch. 6 - Prob. 4RCh. 6 - Prob. 5RCh. 6 - A homeowner calls in an electrical contractor to...Ch. 6 - Prob. 7RCh. 6 - Extremely long circuit runs connected to a GFCI...Ch. 6 - If a person comes in contact with the hot and...Ch. 6 - What might happen if the line and load connections...
Ch. 6 - Is a GFCI receptacle permitted be installed as a...Ch. 6 - Prob. 12RCh. 6 - Prob. 13RCh. 6 - Prob. 14RCh. 6 - Prob. 15RCh. 6 - Construction sites can be dangerous because of the...Ch. 6 - Prob. 17RCh. 6 - Prob. 18RCh. 6 - The term SPD is becoming quite common. What do the...Ch. 6 - Transients (surges) on a line can cause spikes or...Ch. 6 - Prob. 21RCh. 6 - Prob. 22RCh. 6 - Some line transients are not damaging to...Ch. 6 - Briefly explain the operation of an immersion...Ch. 6 - What range of leakage current must trip an IDCI?Ch. 6 - Prob. 26RCh. 6 - Other than for a few exceptions, the NEC requires...Ch. 6 - In an old house, an existing nongrounding...Ch. 6 - Prob. 29RCh. 6 - NEC 210.12(A) requires AFCI protection for the...Ch. 6 - When installing GFCI and AFCI circuit breakers in...Ch. 6 - Prob. 32RCh. 6 - Prob. 33RCh. 6 - A switch that is located inside a bedroom for an...Ch. 6 - Which of the following installations for a kitchen...Ch. 6 - The receptacle outlets in the garage are required...Ch. 6 - Two 125-volt receptacles on a 20-ampere, 120-volt...Ch. 6 - Prob. 38R
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- Can you rewrite the solution because it is unclear? AM (+) = 8(1+0.5 cos 1000kt +0.5 ros 2000 thts) = cos 10000 πt. 8 cos wat + 4 cos wit + 4 cos Wat coswet. J4000 t j11000rt $14+) = 45 jqooort +4e + e + e j 12000rt. 12000 kt + e +e +e Le jsoort -; goon t te +e Dcw> = 885(W- 100007) + 8 IS (W-10000) - USBarrow_forwardCan you rewrite the solution because it is unclear? Q2 AM ①(+) = 8 (1+0.5 cos 1000πt +0.5 ros 2000kt) $4+) = 45 = *cos 10000 πt. 8 cos wat + 4 cosat + 4 cos Wat coswet. j1000016 +4e -j10000πt j11000Rt j gooort -j 9000 πt + e +e j sooort te +e J11000 t + e te j 12000rt. -J12000 kt + с = 8th S(W- 100007) + 8 IS (W-10000) <&(w) = USB -5-5 -4-5-4 b) Pc 2² = 64 PSB = 42 + 4 2 Pt Pc+ PSB = y = Pe c) Puss = PLSB = = 32 4² = 8 w 32+ 8 = × 100% = 140 (1)³×2×2 31 = 20% x 2 = 3w 302 USB 4.5 5 5.6 6 ms Ac = 4 mi = 0.5 mz Ac = 4 ५ M2 = =0.5arrow_forwardA. Draw the waveform for the following binary sequence using Bipolar RZ, Bipolar NRZ, and Manchester code. Data sequence= (00110100) B. In a binary PCM system, the output signal-to-quantization ratio is to be hold to a minimum of 50 dB. If the message is a single tone with fm-5 kHz. Determine: 1) The number of required levels, and the corresponding output signal-to-quantizing noise ratio. 2) Minimum required system bandwidth.arrow_forward
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