Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
60 Cards in this Set
- Front
- Back
|
In Poisson's Ratio determination of aluminum, we used an Universal Testing Machine where the crosshead was moved by A) motor-driven screws B) none of the choices shown C) hydraulically-driven pistons D) pneumatically-driven pistons |
C) hydraulically-driven pistons |
|
|
In Poisson's Ratio determination of aluminum, we measured Load-Strain data under A) Load Control, i.e., constant load rate B) Strain Control, i.e. constant strain rate C) Displacement Control, i.e., constant displacement rate D) none of the choices shown |
A) Load Control, i.e., constant load rate |
|
|
Compared to Poisson's Ratio measured during elastic deformation of a metallic material, the Poisson's Ratio measured during uniform plastic deformation is smaller the same larger |
larger |
|
|
In uniaxial tensile testing of homogeneous and isotropic metallic materials, the ratio of transverse strain to axial strain is A) always zero B) always positive C) always negative |
C) always negative |
|
|
During uniaxial elastic and tensile deformation of homogeneous and isotropic solids with Poisson's Ratio less than 0.5, the volume of the specimen A) stays the same B) always decreases C) always increases |
C) always increases |
|
|
During uniaxial elastic and tensile deformation of homogeneous and isotropic solids with Poisson's Ratio equal to 0.5, the volume of the specimen A) always decreases B) stays the same C) always increases |
B) stays the same |
|
|
Given that the electrical resistivity of strain gage material increases with temperature, if at a constant applied load the strain gage warms up but not the specimen then A) the measured axial strain will be smaller than the mechanical strain in the specimen B) the measured axial strain will be larger than the mechanical strain in the specimen C) the measured axial strain will be same as the mechanical strain in the specimen |
B) the measured axial strain will be larger than the mechanical strain in the specimen |
|
|
In making strain measurements during Poisson's Ratio determination, we zeroed the load dial and then initialized (i.e., zeroed) the strain gages. Suppose thatat this instance, the specimen experiences a true tensile load of 500 lb, then A)the measured (or calculated) Poisson's Ratio will be smaller than the actual Poisson's Ratio B)the measured (or calculated) Poisson's Ratio will be larger than the actual Poisson's Ratio C)the measured (or calculated) Poisson's Ratio will be same as the actual Poisson's Ratio |
C)the measured (or calculated) Poisson's Ratio will be same as the actual Poisson's Ratio |
|
|
In making strain measurements during Poisson's Ratio determination, we zeroed the load dial and then initialized (i.e., zeroed) the strain gages. Suppose thatat this instance, the specimen experiences a true tensile load of 500 lb, then A)the measured (or calculated) Elastic Modulus will be smaller than the actual Elastic Modulus B)the measured (or calculated) Elastic Modulus will be larger than the actual Elastic Modulus C)the measured (or calculated) Elastic Modulus will be same as the actual Elastic Modulus |
C)the measured (or calculated) Elastic Modulus will be same as the actual Elastic Modulus |
|
|
n making strain measurements during Poisson's Ratio determination, we zeroed the load dial and then initialized (i.e., zeroed) the strain gages. Suppose thatat this instance, the specimen experiences a true tensile load of 500 lb, then A) the measured axial strain will be smaller than the actual axial strain B) the measured axial strain will be same as the actual axial strain C) the measured axial strain will be larger than the actual axial strain |
A) the measured axial strain will be smaller than the actual axial strain |
|
|
In tensile testing of aluminum, we used an Ultimate Testing Machine where the crosshead was moved by A) pneumatically driven pistons B) none of the choices shown C) motor driven screws D) hydraulically driven pistons |
C) motor driven screws |
|
|
In tensile testing of aluminum, we measured Load-Strain data under A) Load Control, i.e., constant load rate B) None of the choices shown C) Strain Control, i.e., contant strain rate D) Displacement Control, i.e., constant displacement rate |
D) Displacement Control, i.e., constant displacement rate |
|
|
During elastic and uniform plastic deformation of a metallic material, at a given applied load, the true stress is A) is always smaller than the engineering stress B) is always larger than the engineering stress C) could be smaller or larger than the engineering stress |
B) is always larger than the engineering stress |
|
|
During elastic and uniform plastic deformation of a metallic material, at a given applied load, the true strain A) could be smaller or larger than the engineering strain B) is always smaller than the engineering strain C) is always larger than the engineering strain |
B) is always smaller than the engineering strain |
|
|
In tensile testing, after necking begins, the strain measured by the extensometer A) is not a reliable value B) may or may not be a reliable value C) is a reliable value |
A) is not a reliable value |
|
|
In uniaxial tensile testing, the maximum normal stress occurs on a plane that is oriented (see your textbook) A) 90 degrees to the tensile axis B) 45 degrees to the tensile axis C) 0 degrees to the tensile axis |
A) 90 degrees to the tensile axis |
|
|
In uniaxial tensile testing, the maximum shear stress occurs on a plane that is oriented (see your textbook) A) 45 degrees to the tensile axis B) 0 degrees to the tensile axis C) 90 degrees to the tensile axis |
A) 45 degrees to the tensile axis |
|
|
The units of the modulus of resilience and modulus of toughness are same as A) energy per unit volume B) engineering stress C) all of the above D) none of the above |
C) all of the above |
|
|
In tensile testing of metallic materials, uniform plastic deformation begins when the applied stress exceeds A) ductility B) elastic modulus C) tensile strength D) elastic limit |
D) elastic limit |
|
|
In tensile testing of metallic materials, non-uniform plastic deformation begins when the applied stress equals A) tensile strength B) elastic limit C) yield strength D) elastic modulus |
A) tensile strength |
|
|
In Bending Test, during elastic deformation of the specimen, the maximum tensile strain in a given cross-section occurs A) At the surface of the specimen B) none of the choices shown C) at the center of the cross-section |
A) At the surface of the specimen |
|
|
In Bending Test, during elastic deformation of the specimen, the maximum tensile stress in a given cross-section occurs A) none of the choices shown B) at the center of the cross-section C) at the surface of the specimen |
C) at the surface of the specimen |
|
|
In Bending Test, during elastic deformation of the specimen, the following strain equation is valid
A) none of the choices shown B) only at the surface of the specimen cross-section C) only at the center of the cross-section D) at each point on the specimen cross-section |
D) at each point on the specimen cross-section |
|
|
In Bending Test, during elastic deformation of the specimen, the following stress equation is valid
A) only at the center of the cross-section B) at each point on the specimen cross-section C) none of the choices shown D)only at the surface of the specimen cross-section |
B) at each point on the specimen cross-section |
|
|
In Bending Test, during elastic deformation of the specimen, the maximum stress on the top surface of the specimen will occur in the cross-section located at A) the center of the length of the cantilever B) the free end of the cantilever C) the edge of the fixed support of the cantilever D) none of the choices shown |
C) the edge of the fixed support of the cantilever |
|
|
In Bending Test, when a load is applied at the free end of the cantilever, the transverse strain gage on the top surface A) always shows a compressive strain on the strain indicator B) always shows a tensile strain on the strain indicator C) shows tensile or compressive strain depending on the magnitude of the applied load |
A) always shows a compressive strain on the strain indicator |
|
|
In Bending Test, when a load is applied at the free end of the cantilever, the transverse strain gage on the top surface A) always shows a compressive strain on the strain indicator B) always shows a tensile strain on the strain indicator C) shows tensile or compressive strain depending on the magnitude of the applied load |
C) shows tensile or compressive strain depending on the magnitude of the applied load |
|
|
In Bending Test, when a load is applied at the free end of the cantilever and the axial strain gage is placed at the bottom surface of the cantilever, it A) shows tensile or compressive strain depending on the magnitude of the applied load B) always shows a tensile strain on the strain indicator C) always shows a compressive strain on the strain indicator |
C) always shows a compressive strain on the strain indicator |
|
|
In Bending Test, during plastic deformation of the specimen the following strain equation is valid
A) at each point on the specimen x-section B) none of the choices shown C) only at the surface of the cross-section |
A) at each point on the specimen x-section |
|
|
In Bending Test, during plastic deformation of the specimen the following stress equation is valid
A) only at the surface of the cross-section B) none of the choices shown C) at each point on the specimen x-section |
B) none of the choices shown |
|
|
In the Four Point Bending Setup (see Figure 6 - Experimental Setup), if we swap the load cells and weight hangers then A) the shear force in the middle span is no longer zero B) the deflection of the mid-point of the beam will still be upward C) the middle span still experiences pure bending D) the bending moment in the middle span is no longer constant |
C) the middle span still experiences pure bending |
|
|
In the Four Point Bending Test (see Figure 6 - Experimental Setup), if the spacing "a" between the deflection indicators is increased then the radius of curvature A) may increase or decrease B) will increase C) will decrease D) will remain the same |
D) will remain the same |
|
|
In the Four Point Bending Test (see Figure 6 - Experimental Setup), if the spacing "b" between the weight hangers and the load cells is increased then the radius of curvature A) will decrease B) may increase or decrease C) will remain the same D) will increase |
A) will decrease |
|
|
In the Four Point Bending Test (see Figure 6 - Experimental Setup), if the width "w" of the beam is increased then the radius of curvature A) will increase B) will remain the same C) may increase or decrease D) will decrease |
A) will increase |
|
|
In the Four Point Bending Test (see Figure 6 - Experimental Setup), if the thickness "t" of the beam is increased then the radius of curvature A) may increase or decrease B) will increase C) will remain the same D) will decrease |
B) will increase |
|
|
In the Four Point Bending Test (see Figure 6 - Experimental Setup), if the elastic modulus "E" of the beam is increased then the radius of curvature A) may increase or decrease B) will decrease C) will increase D) will remain the same |
C) will increase |
|
|
In the Four Point Bending Test (see Figure 6 - Experimental Setup), we did not include the weight of the hangers anywhere in our data or calculations. If the weight of the hangers were included in the data, will the newly recalculated radii of curvature values A) decrease B) increase in some cases and decrease in others C) remain the same D) increase |
C) remain the same |
|
|
In the Four Point Bending Test (see Figure 6 - Experimental Setup), imagine that a strain gauge is glued on the bottom surface of the beam at the location ofeach of the three deflections indicators. The strain gauges are aligned along the longitudinal axis and connected to a meter to show all the three strain values. When weight W = 25N is placed in each of the two hangers, the strain meter will display A) left and right strains to be the same negative value while middle strain is zero value B) all three strains to be negative values C) all three strains to be positive values D) all three strains to be zero values |
B) all three strains to be negative values |
|
|
In the Four Point Bending Test (see Figure 6 - Experimental Setup), imagine that a strain gauge is glued on the bottom surface of the beam at the location ofeach of the three deflections indicators. The strain gauges are aligned along the longitudinal axis and connected to a meter to show all the three strain values. When weight W = 25N is placed in each of the two hangers, the strain meter will display A) the three strains to have the same equal value B) the left and right strain to have the same (equal) value while the middle strain is nonzero but a different value C) the three strains to have different (unequal) values D) the left and right strain to have the same (equal) value while the middle strain is zero |
A) the three strains to have the same equal value |
|
|
In the Four Point Bending Test (see Figure 6 - Experimental Setup), imagine that a strain gauge is glued on the bottom surface of the beam at its two ends. The strain gauges are aligned along the longitudinal axis and connected to a meter to show both the strain values. When weight W = 25N is placed in each of the two hangers, the strain meter will display A) the two strain values to be different B) both the strain values to be nonzero but positive C) both the strain values to be zero D) both the strain values to be nonzero but negative |
C) both the strain values to be zero |
|
|
In the Combined Loading experiment, during bending only portion of the experiment, from theory we expect A) strain "B" to be always positive in sign B) strain "C" must be the same as strain "A" in both sign and magnitude C) all of the choices shown above D) none of the choices shown above |
C) all of the choices shown above |
|
|
In the Combined Loading experiment, during bending only portion of the experiment, from theory we expect A) the resulting shear strain to be zero B) the resulting transverse strain to be always positive in sign C) all of the choices shown above D) none of the choices shown above |
A) the resulting shear strain to be zero |
|
|
In the Combined Loading experiment, during bending only portion of the experiment, if the strain rosette was attached to the bottom surface of the rod, then from theory we expect A) strain "B" to be always positive in sign B) strain "C" must be the same as strain "A" in both sign and magnitude C) all of the choices shown above D) none of the choices shown above |
B) strain "C" must be the same as strain "A" in both sign and magnitude |
|
|
In the Combined Loading experiment, during bending only portion of the experiment, if the strain rosette was attached to the bottom surface of the rod, then from theory we expect A) the resulting shear strain to be zero B) the resulting transverse strain to be always positive in sign C) all of the choices shown above D) none of the choices shown above |
C) all of the choices shown above |
|
|
In the Combined Loading experiment, after computing the principal stresses and their orientation, we expect A) the orientation angle thetap to be the same at each load B) the axial normal stress sigmax to always be the sum of the two principal stresses (sigmamin and sigmamax) C) all of the choices shown above D) none of the choices shown above |
C) all of the choices shown above |
|
|
In the Combined Loading experiment, after computing the principal stresses and their orientation, we expect A) sigmamax to always be greater than than the maximum in-plane shear stress (taumax) B) the maximum in-plane shear stress (taumax) to always be greater than (sigmamax - sigmamin) C) all of the choices shown above D) none of the choices shown above |
A) sigmamax to always be greater than than |
|
|
In the Combined Loading experiment, if the strain rosette was attached to the bottom surface of the rod then after computing the principal stresses and their orientation, we expect A) sigmamax to always be greater than than the maximum in-plane shear stress (taumax) B) the maximum in-plane shear stress (taumax) to always be greater than (sigmamax - sigmamin) C) all of the choices shown above D) none of the choices shown above |
D) none of the choices shown above |
|
|
In the Combined Loading experiment, if the strain rosette was attached to the bottom surface of the rod then after computing the principal stresses and their orientation, we expect A) the orientation angle thetap to be the same at each load B) the axial normal stress sigmax to always be the sum of the two principal stresses (sigmamin and sigmamax) C) all of the choices shown above D) none of the choices shown above |
C) all of the choices shown above |
|
|
In the Combined Loading experiment, if the two lengths: bending arm (=Lbending) and the torsion arm (=Larm) were equal then A) the tensile stress (sigmax) will be the same as the shear stress (tauxz) B) the tensile stress (sigmax) will be the twice as much as the shear stress (tauxz) C) the tensile stress (sigmax) will be the half as much as the shear stress (tauxz) |
B) the tensile stress (sigmax) will be the twice as much as the shear stress (tauxz) |
|
|
In the Combined Loading experiment, if the two lengths: bending arm (=Lbending) and the torsion arm (=Larm) were equal then the orientation (thetap) of the maximum principal stress (sigmamax) relative to the bending stress (sigmax) is A) 22.5 degrees B) 45 degrees C) 90 degrees |
A) 22.5 degrees |
|
|
In the cantilever deflection experiment, when there is no point load (P = 0), the reaction force at the cantilever support is A) non-zero but could be upwards or downwards B) non-zero and upwards C) zero D) non-zero and downwards |
B) non-zero and upwards |
|
|
In the cantilever deflection experiment, when there is no point load (P = 0), the reaction moment at the cantilever support is A) non-zero and clockwise B) non-zero but could be either direction C) non-zero and counter-clockwise D) zero |
C) non-zero and counter-clockwise |
|
|
In the cantilever deflection experiment, when there is no point load (P = 0), the beam deflection y at the cantilever support is A) non-zero and downward B) zero C) non-zero and upward D) non-zero but could be either direction |
B) zero |
|
|
In the cantilever deflection experiment, when there is no point load (P = 0), the beam slope dy/dx at the cantilever support is A) non-zero and upward B) non-zero and downward C) non-zero but could be either direction D) zero |
D) zero |
|
|
In the cantilever deflection experiment, when there is no point load (P = 0), the beam deflection y at the free end is A) non-zero but could be either direction B) non-zero and upward C) non-zero and downward D) zero |
C) non-zero and downward |
|
|
In the cantilever deflection experiment, when there is no point load (P = 0), the beam slope dy/dx at the free end is A) non-zero but could be either direction B) non-zero and upward C) non-zero and downward D) zero |
C) non-zero and downward |
|
|
In the cantilever deflection experiment, when there is no point load (P = 0) and with all other parameters remaining the same, if the width b of the beam isincreased then the magnitude of the beam deflection y at the free end A) will decrease B) can increase or decrease C) will increase D) will remain the same |
D) will remain the same |
|
|
In the cantilever deflection experiment, when there is no point load (P = 0) and with all other parameters remaining the same, if the thickness h of the beam is increased then the magnitude of the beam deflection y at the free end A) will decrease B) will remain the same C) will increase D) can increase or decrease |
A) will decrease |
|
|
In the cantilever deflection experiment, when there is no point load (P = 0) and with all other parameters remaining the same, if the length L of the beam isincreased then the magnitude of the beam deflection y at the free end A) will remain the same B) will decrease C) will increase D) can increase or decrease |
C) will increase |
|
|
In the cantilever deflection experiment, when there is no point load (P = 0) and with all other parameters remaining the same, if the elastic modulus E of the beam is increased then the magnitude of the beam deflection y at the free end A) will decrease B) will increase C) can increase or decrease D) will remain the same |
A) will decrease |
