Question 1

A Newtonian fluid is a fluid best defined by which one of the following:

Accepted Answer

A) its viscosity decreases as shear rate increases 
B) its viscosity decreases as temperature increases 
C) its viscosity increases as shear rate increases 
D) its viscosity increases as temperature increases 
E) its viscosity remains constant as shear rate changes
F)its viscosity remains constant as temperature changes 
A) its viscosity decreases as shear rate increases 
B) its viscosity decreases as temperature increases 
C) its viscosity increases as shear rate increases 
D) its viscosity increases as temperature increases 
E) its viscosity remains constant as shear rate changes
F)its viscosity remains constant as temperature changes E

Question 2

Which one of the following types of stress strain relationship best describes the behavior of brittle materials such as ceramics and thermosetting plastics:

Accepted Answer

A) elastic and perfectly plastic 
B) elastic and strain hardening 
C) perfectly elastic 
D) none of the above 
A) elastic and perfectly plastic 
B) elastic and strain hardening 
C) perfectly elastic 
D) none of the above C

Question 3

Which of the following are the three basic types of static stresses to which a material can be subjected (three correct answers):

Accepted Answer

A) compression 
B) hardness 
C) reduction in area 
D) shear 
E) tensile
F)true stress
G)Yield 
A) compression 
B) hardness 
C) reduction in area 
D) shear 
E) tensile
F)true stress
G)Yield A, D, E

Question 4

The flow curve describes the property of metals known as which one of the following:

Accepted Answer

A) ductility 
B) engineering strain 
C) fracture stress 
D) strain hardening 
E) tensile strength 
A) ductility 
B) engineering strain 
C) fracture stress 
D) strain hardening 
E) tensile strength

Question 5

Which one of the following materials has the highest hardness:

Accepted Answer

A) alumina ceramic 
B) gray cast iron 
C) hardened tool steel 
D) high carbon steel 
E) polystyrene 
A) alumina ceramic 
B) gray cast iron 
C) hardened tool steel 
D) high carbon steel 
E) polystyrene

Question 6

The transverse rupture strength is a property usually associated with which one of the following material types:

Accepted Answer

A) ceramics 
B) metals 
C) plastics 
D) rubber 
A) ceramics 
B) metals 
C) plastics 
D) rubber

Question 7

Which one of the following materials has the highest modulus of elasticity:

Accepted Answer

A) aluminum 
B) diamond 
C) steel 
D) titanium 
E) tungsten 
A) aluminum 
B) diamond 
C) steel 
D) titanium 
E) tungsten

Question 8

Viscoelasticity can be defined as the property of a material that determines the strain it experiences when subjected to combinations of stress and temperature over time:

Accepted Answer

A) True 
 B)False

Question 9

Hardness is best defined as which one of the following:

Accepted Answer

A) energy absorbed by a material when an object strikes its surface 
B) resistance to bending 
C) resistance to permanent indentation 
D) resistance to scratching 
A) energy absorbed by a material when an object strikes its surface 
B) resistance to bending 
C) resistance to permanent indentation 
D) resistance to scratching

Question 10

Which one of the following types of stress strain relationship best describes the behavior of metals at temperatures above their respective recrystallization points:

Accepted Answer

A) elastic and perfectly plastic 
B) elastic and strain hardening 
C) perfectly elastic 
D) none of the above 
A) elastic and perfectly plastic 
B) elastic and strain hardening 
C) perfectly elastic 
D) none of the above

Question 11

The plastic region of the stress-strain curve for a metal is characterized by a proportional relationship between stress and strain:

Accepted Answer

A) True 
 B)False

Question 12

Which one of the following types of stress strain relationship best describes the behavior of most metals at room temperature:

Accepted Answer

A) elastic and perfectly plastic 
B) elastic and strain hardening 
C) perfectly elastic 
D) none of the above 
A) elastic and perfectly plastic 
B) elastic and strain hardening 
C) perfectly elastic 
D) none of the above

Question 13

If engineering strain and true strain were measured simultaneously during a tensile test, which would have the higher value:

Accepted Answer

A) engineering strain 
B) true strain 
A) engineering strain 
B) true strain

Question 14

Most hardness tests involve pressing a hard object into the surface of a test specimen and measuring the resulting indentation or its effect:

Accepted Answer

A) True 
 B)False

Question 15

The modulus of elasticity is also known as which one of the following:

Accepted Answer

A) elastic limit 
B) strain hardening exponent 
C) strength coefficient 
D) Young's modulus 
A) elastic limit 
B) strain hardening exponent 
C) strength coefficient 
D) Young's modulus

Question 16

The shear strength of a metal is commonly determined in which one of the following tests:

Accepted Answer

A) bending test 
B) compression test 
C) flexure test 
D) tensile test 
E) torsion test 
A) bending test 
B) compression test 
C) flexure test 
D) tensile test 
E) torsion test

Question 17

The formation of new strain-free grains in a metal that has been heated to an elevated temperature is called which one of the following:

Accepted Answer

A) hot hardness 
B) recrystallization 
C) strain hardening 
D) strain softening 
A) hot hardness 
B) recrystallization 
C) strain hardening 
D) strain softening

Question 18

If engineering stress and true stress were measured simultaneously during a tensile test, which would have the higher value:

Accepted Answer

A) engineering stress 
B) true stress 
A) engineering stress 
B) true stress

Question 19

Which one of the following is the correct definition of ultimate tensile strength, as derived from the results of a tensile test on a metal specimen:

Accepted Answer

A) the stress encountered when the stress-strain curve transforms from elastic to plastic behavior 
B) the maximum load divided by the final area of the specimen 
C) the maximum load divided by the original area of the specimen 
D) the stress observed when the specimen finally fails 
A) the stress encountered when the stress-strain curve transforms from elastic to plastic behavior 
B) the maximum load divided by the final area of the specimen 
C) the maximum load divided by the original area of the specimen 
D) the stress observed when the specimen finally fails

Question 20

The shear strength of a metal is usually

Accepted Answer

A) greater than 
B) less than its tensile strength 
A) greater than 
B) less than its tensile strength

Exam 3: Mechanical Properties of Materials

A Newtonian fluid is a fluid best defined by which one of the following:

Which one of the following types of stress strain relationship best describes the behavior of brittle materials such as ceramics and thermosetting plastics:

Which of the following are the three basic types of static stresses to which a material can be subjected (three correct answers):

The flow curve describes the property of metals known as which one of the following:

Which one of the following materials has the highest hardness:

The transverse rupture strength is a property usually associated with which one of the following material types:

Which one of the following materials has the highest modulus of elasticity:

Viscoelasticity can be defined as the property of a material that determines the strain it experiences when subjected to combinations of stress and temperature over time:

Hardness is best defined as which one of the following:

Which one of the following types of stress strain relationship best describes the behavior of metals at temperatures above their respective recrystallization points:

The plastic region of the stress-strain curve for a metal is characterized by a proportional relationship between stress and strain:

Which one of the following types of stress strain relationship best describes the behavior of most metals at room temperature:

If engineering strain and true strain were measured simultaneously during a tensile test, which would have the higher value:

Most hardness tests involve pressing a hard object into the surface of a test specimen and measuring the resulting indentation or its effect:

The modulus of elasticity is also known as which one of the following:

The shear strength of a metal is commonly determined in which one of the following tests:

The formation of new strain-free grains in a metal that has been heated to an elevated temperature is called which one of the following:

If engineering stress and true stress were measured simultaneously during a tensile test, which would have the higher value:

Which one of the following is the correct definition of ultimate tensile strength, as derived from the results of a tensile test on a metal specimen:

The shear strength of a metal is usually

Introduction and Overview of Manufacturing

The Nature of Materials

Physical Properties of Materials

Engineering Materials

Dimensions, Surfaces, and Their Measurement

Fundamentals of Metal Casting

Metal Casting Processes

Glassworking

Shaping Processes for Plastics

Processing of Polymer Matrix Composites and Rubber

Powder Metallurgy

Processing of Ceramics and Cermets

Fundamentals of Metal Forming

Bulk Deformation Processes in Metal Workiing

Sheet Metalworking

Theory of Metal Machining

Machining Operations and Machine Tools

Cutting Tool Technology

Economic and Product Design Considerations

Grinding and Other Abrasive Processes

Nontraditional Machining and Thermal Cutting

Heat Treatment of Metals

Surface Processing Operations

Fundamentals of Welding

Welding Processes

Brazing, Soldering, and Adhesive Bonding

Mechanical Assembly

Rapid Prototyping and Additive Manufacturing

Processing of Integrated Circuits

Electronics Assembly and Packaging

Microfabrication Technologies

Nanofabrication Technologies

Automation Technologies for Manufacturing Systems

Integrated Manufacturing Systems

Process Planning and Production Control

Quality Control and Inspection

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