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(10 Question 5: points: 2 pts each) State whether the following questions are True or False....
au] CE 121 EXAM-1 October 01, 2014 Instructions: This is a closed book Exam, You may...
au] CE 121 EXAM-1 October 01, 2014 Instructions: This is a closed book Exam, You may use the formsula sheet provided separately 50 Points Write neatly and clearly. Show all intermediate steps. Carry units throughout the solutions. Final answers must be accompanied with units where appropriate Problem 1: State true or false. Please circle your answer 1. Normal force is a foree that acts perpendicular to the area 2. Bending moment is developed when the external loads tend to twist...
a. Relationship between average normal stress and normal load perpendicular to a cross-sectional area b. Relationship...
a. Relationship between average normal stress and normal load perpendicular to a cross-sectional area b. Relationship between average shear stress and shear load in-plane with a cross-sectional area C. Average normal strain along a line on a body, given initial and final line lengths d. Hooke's Law applied to relationship between axial stress and strain e. Hooke's Law applied to relationship between torsional stress and strain f. Poisson's ratio between longitudinal and lateral strains g. Modulus of elasticity of steel...
1. The following is a one-layer truss structure fabricated from aluminum tubing with outside diameter and...
1. The following is a one-layer truss structure fabricated from aluminum tubing with outside diameter and wall thickness as 0.4 inch and 0.05 inch, respectively. The Young's modulus and Poisson's ratio for aluminum are E= 10 x 10°psi, v=0.33, respectively. The applied load P is 60 Ib. Please answer = 60° B Ra all Cled URb The internal force for member AC is: -30 lb 34.6 lb 30 lb -34.6 lb Question 2 1 points Save Answer 1. The following...
Questionl: Explain four basic classes of solid materials MCQ Question 2: Which of the following is...
Questionl: Explain four basic classes of solid materials MCQ Question 2: Which of the following is true for polymers? a) They have very high molecular mass b) They do not have linear stress-strain curve c) They have high strength to mass ratio d) All of the mentioned Question 3: Ceramics make excellent refractory materials. A material is said to be refractory if it: a) resists the flow of electric current b) has high refractive index c) retains its strength at...
Q21. Which one of the following statements about the ductility of metals is TRUE? A High ductility occurs in brittle materials B Ductility is the amount of deformation at the 0.2% proof stress C Duct...
Q21. Which one of the following statements about the ductility of metals is TRUE? A High ductility occurs in brittle materials B Ductility is the amount of deformation at the 0.2% proof stress C Ductility can be measured as % reduction in area from broken tensile samples D Ductility is deformation in the elastic region E Ductility is the change between upper and lower yield point in steels Q22. Which one of the following statements is TRUE about Charpy impact...
Question 16 1 points Save Answer A thin-wall aluminum pop can is subjected to an internal...
Question 16 1 points Save Answer A thin-wall aluminum pop can is subjected to an internal pressure of 100 psi. The diameter and the wall thickness of the can are 2.5 inch and 0.004 inch respectively. The Young's modulus and Poisson's ratio for aluminum are E = 10 x 10ps and v- 0.33 , respectively. The axial stress (the stress along the longitudinal direction) is closest to 32000 psi 40000 psi 16000 psi 8000 psi Question 17 0.5 points Save...
Question Completion Status: Question 2 1 points Save Arwe 1. The following is a one-layer truss...
Question Completion Status: Question 2 1 points Save Arwe 1. The following is a one-layer truss structure fabricated from aluminum tubing with outside diameter and wall thickness as 0.4 inch and 0.05 inch, respectively. The Young's modulus and Poisson's ratio for aluminum are E-10 x 10°psi, v=0.33, respectively. The applied food is 60tb. = 60 B Ra Rb L The internal force for member AC is: O 30 lb 34.6 lb O 34,6 lb 30 lb Question Completion Status: 1....
Question In general, strain is not uniform throughout an object/body. O True O False Question 10...
Question In general, strain is not uniform throughout an object/body. O True O False Question 10 Shear strain is measured in radians O True O False Question 11 For steel, elastic limit and oy are nearly identical O True O False Question 12 Examples of ductile materials include Mild steel Materials at low temperatures O Concrete O Materials at high temperatures O Cast Iron Copper O Brass O Brick O Glass O Aluminum
Which of the following is not a strengthening method for crystalline metals? A. Hot-working B. Cold-working....
Which of the following is not a strengthening method for crystalline metals? A. Hot-working B. Cold-working. C. Grain refinement D. Interstitial alloy addition E. None of the above. These are all strengthening methods. A unidirecional composite of 35% by volume Eglans for in apocytsee Table 1)is subjected to a stress of 200 MPa parsial to the fore dinction. The strain in the comples Table 1 pdf 71 kn A 0070 0.000 C 728 OD. 0007 O E 0.004 Table 1...
7) Which of the following is true? O The linear coefficient of thermal expansion is unique...
7) Which of the following is true? O The linear coefficient of thermal expansion is unique for each material (material property) O The displacement due to temperature is linearly related to the original length O Stress concentration factors relate the maximum stress to the average stress O Sharp corners should be avoided because they create stress concentrations. O All the above are true 8) Which of the following statements are true? O A simply supported beam which supports a load...
au] CE 121 EXAM-1 October 01, 2014 Instructions: This is a closed book Exam, You may use the formsula sheet provided separately 50 Points Write neatly and clearly. Show all intermediate steps. Carry units throughout the solutions. Final answers must be accompanied with units where appropriate Problem 1: State true or false. Please circle your answer 1. Normal force is a foree that acts perpendicular to the area 2. Bending moment is developed when the external loads tend to twist...
a. Relationship between average normal stress and normal load perpendicular to a cross-sectional area b. Relationship between average shear stress and shear load in-plane with a cross-sectional area C. Average normal strain along a line on a body, given initial and final line lengths d. Hooke's Law applied to relationship between axial stress and strain e. Hooke's Law applied to relationship between torsional stress and strain f. Poisson's ratio between longitudinal and lateral strains g. Modulus of elasticity of steel...
1. The following is a one-layer truss structure fabricated from aluminum tubing with outside diameter and wall thickness as 0.4 inch and 0.05 inch, respectively. The Young's modulus and Poisson's ratio for aluminum are E= 10 x 10°psi, v=0.33, respectively. The applied load P is 60 Ib. Please answer = 60° B Ra all Cled URb The internal force for member AC is: -30 lb 34.6 lb 30 lb -34.6 lb Question 2 1 points Save Answer 1. The following...
Questionl: Explain four basic classes of solid materials MCQ Question 2: Which of the following is true for polymers? a) They have very high molecular mass b) They do not have linear stress-strain curve c) They have high strength to mass ratio d) All of the mentioned Question 3: Ceramics make excellent refractory materials. A material is said to be refractory if it: a) resists the flow of electric current b) has high refractive index c) retains its strength at...
Q21. Which one of the following statements about the ductility of metals is TRUE? A High ductility occurs in brittle materials B Ductility is the amount of deformation at the 0.2% proof stress C Ductility can be measured as % reduction in area from broken tensile samples D Ductility is deformation in the elastic region E Ductility is the change between upper and lower yield point in steels Q22. Which one of the following statements is TRUE about Charpy impact...
Question 16 1 points Save Answer A thin-wall aluminum pop can is subjected to an internal pressure of 100 psi. The diameter and the wall thickness of the can are 2.5 inch and 0.004 inch respectively. The Young's modulus and Poisson's ratio for aluminum are E = 10 x 10ps and v- 0.33 , respectively. The axial stress (the stress along the longitudinal direction) is closest to 32000 psi 40000 psi 16000 psi 8000 psi Question 17 0.5 points Save...
Question Completion Status: Question 2 1 points Save Arwe 1. The following is a one-layer truss structure fabricated from aluminum tubing with outside diameter and wall thickness as 0.4 inch and 0.05 inch, respectively. The Young's modulus and Poisson's ratio for aluminum are E-10 x 10°psi, v=0.33, respectively. The applied food is 60tb. = 60 B Ra Rb L The internal force for member AC is: O 30 lb 34.6 lb O 34,6 lb 30 lb Question Completion Status: 1....
Question In general, strain is not uniform throughout an object/body. O True O False Question 10 Shear strain is measured in radians O True O False Question 11 For steel, elastic limit and oy are nearly identical O True O False Question 12 Examples of ductile materials include Mild steel Materials at low temperatures O Concrete O Materials at high temperatures O Cast Iron Copper O Brass O Brick O Glass O Aluminum
Which of the following is not a strengthening method for crystalline metals? A. Hot-working B. Cold-working. C. Grain refinement D. Interstitial alloy addition E. None of the above. These are all strengthening methods. A unidirecional composite of 35% by volume Eglans for in apocytsee Table 1)is subjected to a stress of 200 MPa parsial to the fore dinction. The strain in the comples Table 1 pdf 71 kn A 0070 0.000 C 728 OD. 0007 O E 0.004 Table 1...
7) Which of the following is true? O The linear coefficient of thermal expansion is unique for each material (material property) O The displacement due to temperature is linearly related to the original length O Stress concentration factors relate the maximum stress to the average stress O Sharp corners should be avoided because they create stress concentrations. O All the above are true 8) Which of the following statements are true? O A simply supported beam which supports a load...
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