9.2: Strain Gages Choose the best answer in the questions below. Name Email 1. In Figure (a) strain gages 1 and 2 recorded strains of 700 and -800 micro, respectively. The normal strains are Normal strains in x and y directions are 700 and 800 micro, respectively. Normal strains in x and y directions are 700 and -800 micro, respectively. Normal strains in x and y directions are -700 and 800 micro, respectively. Normal strains in x and y directions are -700 and -800 micro, respectively. 2. In Figure (b) strain gages 1 and 2 recorded strains of 700 and -800 micro, respectively. The normal strains are Normal strains in x and y directions are 700 and 800 micro, respectively. Normal strains in x and y directions are 700 and -800 micro, respectively. Normal strains in x and y directions are -700 and 800 micro, respectively. Normal strains in x and y directions are -700 and -800 micro, respectively. 3. The angle that can be substituted in the strain transformation Equation 9.5 relating the strain gage reading to strains in Cartesian coordinates for Figure (c) is 35 degrees 125 degrees 145 degrees 55 degrees None of the above 4. The angle that can be substituted in the strain transformation Equation 9.5 relating the strain gage reading to strains in Cartesian coordinates for Figure (d) is 35 degrees 125 degrees 145 degrees 55 degrees None of the above 5. The angle that can be substituted in the strain transformation Equation 9.5 relating the strain gage reading to strains in Cartesian coordinates for Figure (e) is 35 degrees 125 degrees 145 degrees 55 degrees None of the above 6. A point in plane stress has the Mohr circle for strain shown in Figure (f). The modulus of elasticity of the material is E = 10,000 ksi and Poisson’s ratio is 0.25. The maximum shear strain is 1100 micro 1300 micro 1900 micro 1800 micro None of the above 7. A point in plane stress has the Mohr circle for strain shown in Figure (g). The modulus of elasticity of the material is E = 10,000 ksi and Poisson’s ratio is 0.25. The maximum shear strain is 1100 micro 1300 micro 1900 micro 1800 micro None of the above 8. A point in plane stress has the Mohr circle for strain shown in Figure (h). The modulus of elasticity of the material is E = 10,000 ksi and Poisson’s ratio is 0.25. The maximum shear strain is 1100 micro 1300 micro 1900 micro 1800 micro None of the above 9. In plane strain there are two principal strains, but in plane stress there are three principal strains. True False 10. The principal coordinate axis for stresses and strains is always the same, irrespective of the stress–strain relationship. True False Do you have any comments or suggestions? Please send them to author@madhuvable.org Time's up
