Electrical Transformers and Rotating Machines
4th Edition
ISBN: 9781305494817
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 4, Problem 4P
Refer to Figure 4-79 to answer the following questions. Find all the missing values.
Figure 4-79 practice problems 1 through 6.
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Students have asked these similar questions
Calculate the Moment About the Point A
-20"-
5 lb
40 N
D
1.5 m
40 N
4.5 m
A
15 lb.
150 mm
52 N
5
12
100 mm
15 lb.
26 lb.
12
5
34 lb.
13
8
15
77777
36 lb.
Calculate the Moment About the Point A
-20"-
5 lb
40 N
D
1.5 m
40 N
4.5 m
A
15 lb.
150 mm
52 N
5
12
100 mm
15 lb.
26 lb.
12
5
34 lb.
13
8
15
77777
36 lb.
Formala for Hunzontal component= + cos &
Vertical Component: Fsin t
Find the vertical and horizontal components for the figure bellow:
30°
200 N
77
200 cos 30 = 173 N
//
200 sin 30 = 100 N
YA
a₂+b₂
b₂
(b₁,b₂)
a+b
20haits
(a+b₁,a+b) Magnitude a and b
a = lbl = 2o unite
rugle of vector a wt Horisontal Axis = 30
11 vector & wt Honzontal Axis - 60°
b
b
a= |a|
Cas 30
a2
(a1, a2)
ag = 10
bx = /b/ cos
a
1
20 cos 80 = 17.32
Sia 30 = 20 sin 30.
60
= 10
= 20 Cos 60 = It
by = 161 sin 60 = 20 sia 60 = 17.32
b₁
Rx
ax +bx = 17.32 +10=2732
a₁
a₁+b₁
X
By = ou + by=
+
+ by = 10 + 17.32 =27.32
Magnitude
=
38.637
Find the Vector a +b
the Resultans
The angle of the vector with the horizontal axle is 30 degrees while the angle of the
vector b is 60 degrees.
The magnitude of both vectors is 20 (units)
angle of the Resultant vector
=
tam- " (14)
45
Chapter 4 Solutions
Electrical Transformers and Rotating Machines
Ch. 4 - What is a transformer?Ch. 4 - What are common efficiencies for transformers?
Ch. 4 - What is an isolation transformer?Ch. 4 - All values of a transformer are proportional to...Ch. 4 - A transformer has a primary voltage of 480 volts...Ch. 4 - If the secondary of the transformer in question 5...Ch. 4 - Explain the difference between a step-up and a...Ch. 4 - A transformer has a primary voltage of 240 volts...Ch. 4 - A transformer has an output of 750 VA. The primary...Ch. 4 - A transformer has a turns ratio of 1:6. The...
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - The primary leads of a transformer are labeled 1...Ch. 4 - The local utility company must provide service to...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Prob. 7PCh. 4 - Prob. 8P
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