Electrical Transformers and Rotating Machines
4th Edition
ISBN: 9781337264419
Author: Stephen L. Herman
Publisher: Cengage Learning US
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Question
Chapter 10, Problem 3RQ
To determine
The size of the fuse for primary overcurrent protection.
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1. Plot the moment (M), axial (N), and shear (S) diagrams as functions of z.
a)
b)
F₁ = 1250 N
F₁ = 600 N
M₁ = 350 000 N mm
F2 = 500 N
200 N
a = 600 mm
b=1000 mm
a=750 mm
b = 1000 mm
d)
M₁ = 350 000 N mm
F₁ = 600 N
F₂ =200 N
a = 600 mm
b = 1000 mm
M₁ 175 000 Nmm
F = 900 N
a-250 mm
b-1000 mm
-250 mm.
Figure 1: Schematics problem 1.
Given the following cross-sections (with units in mm):
b)
t=2
b=25
h=25
t = 1.5
b=20
b=25
t=2
I
t = 1.5
a=10
b=15
h-25
b=15
t=3
T
h=25
Figure 3: Cross-sections for problem 2.
1. For each of them, calculate the position of the centroid of area with respect to the given coordinate system
and report them in the table below.
2. For each of them, calculate the second moments of inertia I...
and I, around their respective centroid
of area and report them in the table below. Note: use the parallel axes theorem as much as possible to
minimize the need to solve integrals.
Centroid position
x
y
box
Moment of inertia
lyy
by
a)
b)
c)
d)
e)
Problem 1: Analyze the canard-wing combination shown in Fig. 1. The canard and wing are made
of the same airfoil section and have
AR AR, S = 0.25, and = 0.45%
1. Develop an expression for the moment coefficient about the center of gravity in terms of the
shown parameters (, and zg) and the three-dimensional aerodynamic characteristics of the
used wing/canard (CL C and CM).
2. What is the range of the cg location for this configuration to be statically stable?
You may simplify the problem by neglecting the upwash (downwash) effects between the lifting
surfaces and the drag contribution to the moment. You may also assume small angle approximation.
Figure 1: Canard-Wing Configuration.
Chapter 10 Solutions
Electrical Transformers and Rotating Machines
Ch. 10 - Prob. 1RQCh. 10 - What size overcurrent device should be used to...Ch. 10 - Prob. 3RQCh. 10 - The secondary of the transformer in question #3...Ch. 10 - A 10 kVA transformer has a primary voltage of 208...Ch. 10 - A 10 kVA transformer has a primary voltage rating...Ch. 10 - What size conductor should be used to connect the...
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Similar questions
- Problem 2: Consider the Boeing 747 jet transport, whose layout is shown in Fig. 2 and has the following characteristics: xoa 0.25, 8 5500/2, b 195.68ft, 27.31ft, AR, 3.57, V = 0.887 Determine the wing and tail contributions to the CM-a curve. You may want to assume CM, reasonable assumptions (e.g., -0.09, 0, -4°. i=0.0°, and i = -2.0°. Make any other 0.9).arrow_forwardZ Fy = 100 N Fx = 100 N F₂ = 500 N a = 500 mm b = 1000 mm Figure 2: Schematics for problem 3. 1. Draw the moment (M), axial (N), and shear (S) diagrams. Please note that this is a 3D problem and you will have moment (M) and shear (S) along two different axes. That means that you will have a total of 5 diagrams.arrow_forwardAn ideal gas with MW of 29 g/mol, cp = 1.044 kJ/kgK and c₁ = 0.745 kJ/kgK contained in a cylinder-piston assembly initially has a pressure of 175 kPa, a temperature of 22°C, and a volume of 0.30 m³. It is heated slowly at constant volume (process 1-2) until the pressure is doubled. It is then expanded slowly at constant pressure (process 2-3) until the volume is doubled. Draw a figure of the system and the PV diagram showing each state and the path each process takes. Determine the total work done by the system and total heat added (J) in the combined process.arrow_forward
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