DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 10, Problem 20RQ
Explain the rule of 10 in terms of tolerances.
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The crash cushion for a highway barrier consists of a
nest of barrels filled with an impact-absorbing material.
The barrier stopping force is measured versus the vehicle
penetration into the barrier. (Figure 1)
Part A
P Course Home
b My Questions | bartleby
Review
Determine the distance a car having a weight of 4000 lb will penetrate the barrier if it is originally traveling at 55 ft/s when it
strikes the first barrel.
Express your answer to three significant figures and include the appropriate units.
Figure
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36
μΑ
S =
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Units
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Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 12 MPa, and the
condenser pressure is 8 kPa. The mass flow rate of steam entering the turbine is 50 kg/s.
Determine:
(a) the net power developed, in kW.
(b) the rate of heat transfer to the steam passing through the boiler, in kW.
(c) the percent thermal efficiency.
(d) the mass flow rate of condenser cooling water, in kg/s, if the cooling water undergoes a temperature
increase of 18°C with negligible pressure change in passing through the condenser.
4. The figure below shows a bent pipe with the external loading FA
228 lb, and M₁ = M₂ = 1 kip-ft. The force Fernal loading FA = 300 lb, FB:
parallel to the y-axis, and
and yc = 60°.
= 125 lb, Fc
=
acts parallel to the x-z plane, the force FB acts
Cartesian resultan Coordinate direction angles of Fc are ac = 120°, ẞc = 45°,
a. Compute the resultant force vector of the given external loading and express it in
EST
form.
b. Compute the resultant moment vector of the given external loading about the origin, O,
and express it in Cartesian vector form. Use the vector method while computing the
moments of forces.
c. Compute the resultant moment vector of the given external loading about the line OA
and express it in Cartesian vector form.
:00 PM EST
k
ghoufran@buffaternal du
2 ft
M₁
A
40°
FA
M2
C
18 in
1 ft
Fc
25
houfran@bald.edu - Feb 19,
3 ft
FB
Chapter 10 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 10 - What are some of the advantages to the consumer of...Ch. 10 - DFMÂ stands for design for manufacturing. Why is...Ch. 10 - Explain the difference between attributes and...Ch. 10 - Prob. 4RQCh. 10 - What are the four basic measures upon which all...Ch. 10 - What are gage blocks?Ch. 10 - Why do gage blocks come in sets?Ch. 10 - Prob. 8RQCh. 10 - What is the difference between accuracy and...Ch. 10 - What is the difference between tolerance and...
Ch. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Why might you use a shrink fit to join the wheels...Ch. 10 - Explain the difference between repeatability and...Ch. 10 - When measuring time, is it more important to be...Ch. 10 - Prob. 16RQCh. 10 - What factors should be considered in selecting...Ch. 10 - Prob. 18RQCh. 10 - What is parallax? (Why do linesmen in tennis sit...Ch. 10 - Explain the rule of 10 in terms of tolerances.Ch. 10 - How does the vernier caliper work to make...Ch. 10 - What are the two most likely sources of error in...Ch. 10 - What is the major disadvantage of a micrometer...Ch. 10 - What is the main advantage of a micrometer over...Ch. 10 - What is the major difficulty in obtaining an...Ch. 10 - Why is the toolmakers microscope particularly...Ch. 10 - What are the ways that linear measurements can be...Ch. 10 - What type of instrument would you select for...Ch. 10 - What are the chief disadvantages of using a vision...Ch. 10 - What is a CMM (coordinate measuring machine)?Ch. 10 - Prob. 31RQCh. 10 - How can the no�go member of a plug gage be...Ch. 10 - What is the primary precaution that should be...Ch. 10 - What tolerances are added to gages when they are...Ch. 10 - Explain how a go/no�go ring gage works to check...Ch. 10 - Why are air gages particularly well suited for...Ch. 10 - Explain the principle of measurement by...Ch. 10 - How does a toolmakers flat differ from an optical...Ch. 10 - Prob. 1PCh. 10 - Read the 25�division vernier graduated in metric...Ch. 10 - In Figure 10.C , the sleeve�thimble region of...Ch. 10 - Suppose that in Figure 10.31 the height of the...Ch. 10 - What is the estimated error in this measurement,...Ch. 10 - Figure 10.D shows the sleeve�thimble region of...Ch. 10 - In Figure 10.E , two examples of a metric...Ch. 10 - Prob. 8PCh. 10 - Figure 10.F shows a section of a vernier...Ch. 10 - Here is a table that provides a description of...
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