Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Chapter 4, Problem 18R
To determine
Mention the required protection that must be provided when a cable is installed in a notched stud or joist with a distance less than
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Find the inverse of Laplace transform
s-1
5+5
, Re[s]>-3
(s+1)(s-3)
s+5
a)
s²(s+3)
b)
c)
(S-1)(s+1)2
d)
s+5
, i) Re[s]> 3 ii) Re[s]-1 ii) Re[s] 1
(s-1)(s-2)(s-3)'
, i) Re[s]> 3 ii) Re[s]<1 iii) I
1- Find the Laplace transform and the corresponding ROC of the following
signals.
a) x(t) = [et + et cos(3t)]u(t)
b)x(t) = e-alte-atu(t) + eatu(-t), consider a>0.
c) x(t)=8(t) +8(t-1)+8(t−2)
d) x(t) = u(-1)-u(1)
e) x(t) = e-³t sin(2t)u(t)dr
f)x(t) =[r³ +sin(2t)]u(t)dt
g)x(t)=t2e2 cos(5t) u(t - 1)
The transfer function of causal LTI system is H(s) =
s+1
(s+1)(s+3)
Determine the response y(t) when the input x(t) = elt, for the following region
of convergence :) Re[s]> -3 ii) Re[s]Re[s]> -3
Chapter 4 Solutions
Electrical Wiring Residential
Ch. 4 - The largest size solid conductor generally...Ch. 4 - What is the minimum branch-circuit wire size that...Ch. 4 - What exceptions, if any, are there to the answer...Ch. 4 - What determines the ampacity of a wire?Ch. 4 - What unit of measurement is used for the diameter...Ch. 4 - What unit of measurement is used for the...Ch. 4 - What is the voltage rating of the conductors in...Ch. 4 - Indicate the allowable ampacity of the following...Ch. 4 - Prob. 9RCh. 4 - What are the colors of the conductors in...
Ch. 4 - For nonmetallic-sheathed cable, may the...Ch. 4 - Prob. 12RCh. 4 - Under what condition may nonmetallic-sheathed...Ch. 4 - a. What is the maximum distance permitted between...Ch. 4 - Prob. 15RCh. 4 - Prob. 16RCh. 4 - Prob. 17RCh. 4 - Prob. 18RCh. 4 - Prob. 19RCh. 4 - Circle the correct answer to the following...Ch. 4 - When running Type NM cable through a bored hole in...Ch. 4 - Where is the main service-entrance panel located...Ch. 4 - Is it permitted to use flexible metal conduit over...Ch. 4 - Liquidtight flexible metal conduit may serve as a...Ch. 4 - It is permissible for an electrician to connect...Ch. 4 - Terminals of switches and receptacles marked...Ch. 4 - Wire connectors marked AL/CU are suitable for use...Ch. 4 - A wire connector bearing no marking or reference...Ch. 4 - When Type NM cable is run through a floor, it must...Ch. 4 - When nonmetallic-sheathed cables are bunched or...Ch. 4 - In diagrams A and B, nonmetallic-sheathed cable is...Ch. 4 - The marking on the outer jacket of a...Ch. 4 - A 120-volt branch circuit supplies a resistive...Ch. 4 - In problem 35, it is desired to keep the voltage...Ch. 4 - Prob. 37RCh. 4 - The allowable ampacity of a 4 AWG THHN from Table...Ch. 4 - If, because of some obstruction in a wall space,...Ch. 4 - The recessed fluorescent luminaires installed in...Ch. 4 - Prob. 41RCh. 4 - What size overcurrent device protects the...Ch. 4 - May the 20-ampere small-appliance branch circuits...Ch. 4 - A 30-ampere branch circuit is installed for an...Ch. 4 - In many areas, metal framing members are being...Ch. 4 - Are set screwtype connectors permitted to be used...Ch. 4 - Most armored cable today has 90C conductors. What...Ch. 4 - If you saw two different types of SE cables, how...Ch. 4 - Circle the correct answer defining the type of...
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