EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 11, Problem 2R
Assuming that an outlet box for the entry ceiling has a fixture stud but has external cable clamps, what size box could be installed? Show calculations for both metal and nonmetallic boxes. ___________
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A three-phase 20 kV medium-voltage line is 10 km. Resistance is 0.365 2/km and
reactance is 0.363 2/km (inductive). Voltage at the beginning of line is 20.5 kV. At the
end of the line is loading P= 800 kW with power factor 0.95ind. Draw 1-phase equivalent
diagram and calculate load current, line voltage at the end the of line, voltage drop and
power losses of the line.
6. Answer the following questions. Take help from ChatGPT to answer these questions
(if you need). Write the answers briefly using your own words with no more than two
sentences, and make sure you check whether ChatGPT is giving you the appropriate
answers in our context.
A) What is a model in our context?
B) What is an LTI system?
C) What are the three forms of model we have used in the class so far to represent
an LTI system? Among the above three forms, which forms can still be used to
represent a nonlinear system?
5. Consider the following block diagram of a system in the Figure 4.
Y₁(s)
G₁
G2.
R(s)
C(s)
Y₂(s)
G3
G4
Figure 4
The models of the blocks G1, G2, G3 and G4 are represented by a differential
equation, transfer function, state-space form, and impulse response as the
followings.
dy1
G₁:
+2y₁ = 3r(t)
dt
1
G2: G₂(s) =
S+3
G3: x=2x+r,
y2=3x-r
G4: h(t)=8(t) + et 1(t)
Find the simplified expression of the overall transfer function of the system i.e., G(s) =
Note for G3 block, you may need to use the formula H(s) = C (sI - A)-¹ B+ D.
C(s)
R(s)
Chapter 11 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 11 - How many circuit wires enter the entry ceiling...Ch. 11 - Assuming that an outlet box for the entry ceiling...Ch. 11 - How many receptacle outlets and lighting outlets...Ch. 11 - Outdoor luminaires directly exposed to the weather...Ch. 11 - Prob. 5RCh. 11 - From left to right, facing the switches, what do...Ch. 11 - Who is to select the entry ceiling luminaire? ____Ch. 11 - When installing the wiring for a doorjamb switch,...Ch. 11 - The following layout is for Lighting Circuit A15,...
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