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,Solutions for Fundamentals of Modern Manufacturing, 4/e (published by Wiley)
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MPGroover 2010 06-19-09
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1 INTRODUCTION
Review Questions nn
1.1 What are the differences between primary, secondary, and tertiary industries? Give an
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example of each category.
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Answer. A primary industry is one that cultivates and exploits natural resources, such as
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agriculture or mining. A secondary industry takes the outputs of primary
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industries and converts them to consumer and capital goods. Examples of secondary
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industries are textiles and electronics. A tertiary industry is in the service sector of the
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economy. Examples of tertiary industries are banking and education.
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1.2 What is a capital good? Provide an example.
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Answer. Capital goods are those purchased by companies to produce goods or provide services.
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Examples of capital goods are aircraft and construction equipment.
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1.3 How are product variety and production quantity related when comparing typical factories?
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Answer. Generally production quantity is inversely related to product variety. A
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factory that produces a large variety of products will produce a smaller quantity of
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each. A company that produces a single product will produce a large quantity.
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1.4 Define manufacturing capability.
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Answer. Manufacturing capability refers to the technical and physical limitations of a
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manufacturing firm and each of its plants. Three categories of capability mentioned in
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the text are
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(1) technological processing capability, (2) physical size and weight, and (3) production
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capacity.
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1.5 Name the three basic categories of materials.
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Answer. The three basic categories of engineering materials are (1) metals, (2) ceramics, and
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(3) polymers. A fourth category, composites, is a non-homogeneous mixture of the other
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types and therefore is not a basic category.
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1.6 How does a shaping process differ from a surface processing operation?
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Answer. A shaping process changes the geometry of the work material (machining or forging).
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A surface processing operation does not alter the geometry, but instead alters surface of the
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work (painting or plating).
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1.7 What are two subclasses of assembly processes? Provide an example process for each
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subclass.
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Answer. The two subclasses of assembly processes are (1) permanent joining and (2) mechanical
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fastening. Examples of permanent joining include welding or adhesive bonding. Examples of
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mechanical fastening include threaded fasteners, such as nuts and bolts, and rivets.
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1.8 Define batch production and describe why it is often used for medium-
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quantity production products. nn nn
Answer. Batch production is where groups, lots, or batches or materials or parts are
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processed
nn together through the manufacturing operations. All units in the batch are
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processed at a given station before the group proceeds to the next station. In a medium
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or low quantity production
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Excerpts n n from n n this n n work n n may n n be n n reproduced n n by n n instructors n n for n n distribution n n on n n a n n not-for-profit n n basis
n n for n n testing n n or n n instructional n n purposes n n only n n to n n n n students n n enrolled n n in n n courses n n for n n which n n the n n textbook
n n has n n been n n adopted. n n n n Any n n other n n reproduction n n or n n translation n n of n n this n n work n n beyond n n that n n permitted n n n n by
n n Sections n n 107 n n or n n 108 n n of n n the n n 1976 n n United n n States n n Copyright n n Act n n without n n the n n permission n n of n n the
copyright owner is unlawful.
,Solutions for Fundamentals of Modern Manufacturing, 4/e (published by Wiley)
nn nn nn nn nn nn nn nn nn nn
MPGroover 2010 06-19-09
nn nn nn
nntypes of products. Whenever a machine
nn nn switches from one product to another, a
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nn changeover occurs. The changeover requires the machine setup to be torn down and
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nnset up for the new product. Batch production allows the
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Excerpts n n from n n this n n work n n may n n be n n reproduced n n by n n instructors n n for n n distribution n n on n n a n n not-for-profit n n basis
n n for n n testing n n or n n instructional n n purposes n n only n n to n n n n students n n enrolled n n in n n courses n n for n n which n n the n n textbook
n n has n n been n n adopted. n n n n Any n n other n n reproduction n n or n n translation n n of n n this n n work n n beyond n n that n n permitted n n n n by
n n Sections n n 107 n n or n n 108 n n of n n the n n 1976 n n United n n States n n Copyright n n Act n n without n n the n n permission n n of n n the
copyright owner is unlawful.
, Solutions for Fundamentals of Modern Manufacturing, 4/e (published by Wiley)
nn nn nn nn nn nn nn nn nn nn
MPGroover 2010 06-19-09
nn nn nn
changeover time nn
Excerpts n n from n n this n n work n n may n n be n n reproduced n n by n n instructors n n for n n distribution n n on n n a n n not-for-profit n n basis
n n for n n testing n n or n n instructional n n purposes n n only n n to n n n n students n n enrolled n n in n n courses n n for n n which n n the n n textbook
n n has n n been n n adopted. n n n n Any n n other n n reproduction n n or n n translation n n of n n this n n work n n beyond n n that n n permitted n n n n by
n n Sections n n 107 n n or n n 108 n n of n n the n n 1976 n n United n n States n n Copyright n n Act n n without n n the n n permission n n of n n the
copyright owner is unlawful.