EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 27, Problem 43R
To determine
Fill in the blanks regarding the grounding electrode conductor.
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Consider the following circuit, assuming the switch has been in the same position for a long period of time before t = 0:
Vx
L
iL
R3
R2
R₁
Is
+
Vo
-
コロ
>Where Is = 100 mA,R=2202, R2 = 4702,R3 =4702,L= 1 mH. As indicated on the diagram, before t = 0, the switch is closed, after t = 0 the switch is open.
1. What are Ve and Vo before the switch shown opens (answer to within 1% accuracy)?
Vx =
V, Vo =
V
2. What is the T of the RL circuit after the switch operates (answer to within 1% accuracy)?
T=
μs
3. Complete the derivation for the inductor current in (t) differential equation below by filling in the blank coefficients (answer to within 1% accuracy):
diy(1)
dt
di (0) +
iz (t)+
= 0
4. Hence or otherwise, find the time domain expression for Vo(t) (answer to within 1% accuracy):
Vo(t)=
exp(
確定圖5-38中的I1、I2和IB。 Vcc=-12 V；R1=33 kN；RC=1.8 kN；βDC = 150；RE=560；R2=5.6 kN 圖 5-38
Consider the following circuit:
Vs
R₁
Vx
ww
C'₁
R2
Where Vs = 3.3 cos(2000t-10) VR:=2202 R2 = 1002,L=1mH, Ci = 22 nF, C2 = 47 nF
N.B. We have been using cosine as the basis for our phasors.
1. What is the impedance of each of R, Ci, L (answer to within 1%):
Z RI =
+j
Q Zci=
+j
QZL=
+jQ
心
2. Complete the following KCL for node Vo, assuming current flowing out of the node is positive (answer to within 1%):
0=
+j
)+Vo/
+j0)+Vo/(0+j
回回回
3. Hence or otherwise solve for Vo in phasor form (answer to within 1% amplitude and 5 degrees of phase):
Vo =
° V
回
4. Convert this phasor to a time domain expression for Vo(t) (answer to within 1% amplitude and 5 degrees of phase):
Vo(t) =
cos(
t+
Vo
1
Chapter 27 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 27 - Define the Service Point. ______________Ch. 27 - Define service-drop conductors.Ch. 27 - Prob. 3RCh. 27 - a. The service head must be located (above)...Ch. 27 - Prob. 5RCh. 27 - When a conduit is extended through a roof, must it...Ch. 27 - a. What size and type of conductors are installed...Ch. 27 - How and where is the grounding electrode conductor...Ch. 27 - What are the minimum distances or clearances for...Ch. 27 - What are the minimum size ungrounded conductors...
Ch. 27 - What is the minimum size copper grounding...Ch. 27 - What is the recommended height of a meter socket...Ch. 27 - Prob. 13RCh. 27 - Prob. 14RCh. 27 - Prob. 15RCh. 27 - Prob. 16RCh. 27 - Prob. 17RCh. 27 - Prob. 18RCh. 27 - Prob. 19RCh. 27 - Prob. 20RCh. 27 - Prob. 21RCh. 27 - Prob. 22RCh. 27 - Prob. 23RCh. 27 - Prob. 24RCh. 27 - Prob. 25RCh. 27 - Prob. 26RCh. 27 - Prob. 27RCh. 27 - Prob. 28RCh. 27 - Prob. 29RCh. 27 - Prob. 30RCh. 27 - Prob. 31RCh. 27 - Prob. 32RCh. 27 - Prob. 33RCh. 27 - Prob. 34RCh. 27 - Prob. 35RCh. 27 - Prob. 36RCh. 27 - Prob. 37RCh. 27 - Prob. 38RCh. 27 - Prob. 39RCh. 27 - Prob. 40RCh. 27 - Prob. 42RCh. 27 - Prob. 43RCh. 27 - Prob. 44RCh. 27 - Prob. 45RCh. 27 - Prob. 46RCh. 27 - Prob. 47RCh. 27 - Prob. 48R
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