3.4 – BASIC STRUCTURAL MEMBERS In the questions below, choose the best answer considering tension as positive and compression as negative. Use modulus of elasticity of 30,000 ksi and Poisson’s ratio of 0.25. Report all answers to three significant figures. The seam is 30o to the axis of the shaft. Name Email 1. In Figure (a), the torsional shear strain at point A on the solid circular cross-section was found to be 0.0018. The maximum shear strain on the cross-section is 0.0009 0.0015 0.0050 0.0030 None of the above 2. In Figure (a), the torsional shear stress at point A on the solid circular cross-section was found to be 12 ksi. The maximum shear stress on the cross-section is 10.0 ksi 16.67 ksi 25.0 ksi 20.0 ksi None of the above 3. In Figure (a), the maximum torsional shear strain on the solid circular cross-section was found to be 0.0015. The torsional shear stress at point A is 18.00 ksi 10.80 ksi 5.40 ksi 9.35 ksi None of the above 4. In Figure (b), the bending normal strain at point A on the cross-section of a beam was found to be 0.00015. The maximum bending normal strain in the cross-section is -0.00065 -0.00019 -0.00070 -0.00018 None of the above 5. In Figure (b), the bending normal stress at point A on the cross-section of a beam was found to be 1.5 ksi (T). The maximum bending normal stress in the cross-section is 6.500 ksi (C) 1.850 ksi (C) 1.875 ksi (C) 6.0 ksi (C) None of the above 6. In Figure (b), the bending normal strain at point A on the cross-section of a beam was found to be 0.00015. The maximum bending normal stress in the cross-section is 5.625 ksi (C) 5.550 ksi (C) 18.00 ksi (C) 20.00 ksi (C) None of the above 7. In Figure (c), for P = 9π kips and Text = 0 the strain recorded by the strain gage is 225.0 μ 56.3 μ 206.0 μ 75.0 μ None of the above 8. In Figure (c), for P = 0 and Text = 12π in-kips the strain recorded by the strain gage is 433.0 μ 866.0 μ -866.0 μ -433.0 μ None of the above 9. In Figure (c), for P = 9π kips and Text = 0 the normal stress on the seam plane at A is 2.25 ksi (T) 6.75 ksi (T) 4.50 ksi (T) 9.00 ksi (T) None of the above 10. In Figure (c), for P = 0 and Text = 12π, the normal stress on the seam plane at A is 10.39 ksi (T) 1.33 ksi (T) 2.67 ksi (T) 20.78 ksi (T) None of the above Do you have any comments or questions? Please email them to author@madhuvable.org Time's up
