EBK 3N3-EBK: INDUSTRIAL MOTOR CONTROL
7th Edition
ISBN: 9780176919962
Author: Herman
Publisher: VST
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Chapter 48, Problem 1RQ
To determine
The correct option for the pressure swtich.
Expert Solution & Answer
Explanation of Solution
Refer to the circuit in Figure 48-6 in the text book. The pressure swtich found the application where it is necessary to sense the pressure of the pneumatic or hydraulics system.
The pressure switch in the figure is normally closed and is held open as the circuit must be completed before the pressure is released.
Thus, the correct option is d. The normally closed held open.
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"11-17 The shaft shown in Figure P11-3 was designed in Problem 10-17. For the data in the
row(s) assigned from Table P11-1, and the corresponding diameter of shaft found in
Problem 10-17, design suitable bearings to support the load for at least 1E8 cycles at
1800 rpm. State all assumptions.
(a)
Using hydrodynamically lubricated bronze sleeve bearings with Ox = 15,
11d=0.75, and a clearance ratio of 0.001.
✓ ✓
cast-iron roller
FIGURE P11-3
Shaft Design for Problems 11-17
b
gear
key
assume bearings act
as simple supports
11-19 The shaft shown in Figure P11-4 was designed in Problem 10-19. For the data in the
row(s) assigned from Table P11-1, and the corresponding diameter of shaft found in
Problem 10-19, design suitable bearings to support the load for at least 5E8 cycles at
1200 rpm. State all assumptions.
(a)
Using hydrodynamically lubricated bronze sleeve bearings with Oy = 40,
1/d=0.80, and a clearance ratio of 0.002 5.
gear
gear
key
FIGURE P11-4
Shaft Design for Problems 11-19 and…
For the frame below calculate the bending moment at point R. Take P=40 and note that this value is used for both
the loads and the lengths of the members of the frame.
2.5P-
A
Q
B
R
С
45 degrees
✗
✗
P
i
19
Кур
-2P-
4PRN
-P-
-
Calculate the bending moment at the point D on the beam below. Take F=79 and remember
that this quantity is to be used to calculate both forces and lengths.
15F
30F
A
с
Chapter 48 Solutions
EBK 3N3-EBK: INDUSTRIAL MOTOR CONTROL
Ch. 48 - Prob. 1RQCh. 48 - To answer the following questions, refer to the...Ch. 48 - Prob. 3RQCh. 48 - To answer the following questions, refer to the...Ch. 48 - To answer the following questions, refer to the...Ch. 48 - Prob. 6RQCh. 48 - To answer the following questions, refer to the...Ch. 48 - To answer the following questions, refer to the...Ch. 48 - Prob. 9RQCh. 48 - Prob. 10RQ
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- Show work on how to obtain P2 and T2. If using any table, please refer to it. If applying interpolation method, please show the work.arrow_forwardcast-iron roller FIGURE P11-3 Shaft Design for Problems 11-17 Chapter 11 BEARINGS AND LUBRICATION 677 gear key P assume bearings act as simple supports 11-18 Problem 7-18 determined the half-width of the contact patch for a 1.575-in-dia steel cylinder, 9.843 in long, rolled against a flat aluminum plate with 900 lb of force to be 0.0064 in. If the cylinder rolls at 800 rpm, determine its lubrication condition with ISO VG 1000 oil at 200°F. R₁ = 64 μin (cylinder); R₁ = 32 μin (plate). 11-19 The shaft shown in Figure P11-4 was designed in Problem 10-19. For the data in the row(s) assigned from Table P11-1, and the corresponding diameter of shaft found in Problem 10-19, design suitable bearings to support the load for at least 5E8 cycles at 1200 rpm. State all assumptions. 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