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  3. multiplechoice questions each question has only one correct answer question2...

Question: multiplechoice questions each question has only one correct answer question2...

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Multiple-choice questions: (Each question has only one correct answer) Question2 3 Answer 5 6 78 9 10Score 1. Which of the following is Incorrect? A. Normal stress can be either tensile stress or compressive stress. B. Stress is the intensity of internal load acting on a specific area, which equals to load over area. C. The axis along which shear stress acts determine the direction of shear stress. D. Stress has a different unit from pressure. 2. For the box shown, what are the internal normal force (N) and shear force (V) at section a-a? The 500-lb load is applied along the centroidal axis of the member.-- A. N 500 lb, V 0 B, N = 1000 lb, V =0 C. N 500 Ib, V 500 Ib D. N 1000 lb, V 500 lb 5001 3. For the box shown in Question 2, what are the internal normal force (N) and shear force (V) at section b-b? A. N 250 lb, V-433 lb B. N 433 Ib, V 500 lb C. N 433 lb, V 250 I D. N 250 lb, V-233 lb 4. Which of the following is Incorrect regarding Factor of Safety (F.S.)? A. F.S. is the ratio of the failure load to the allowable load. It can be also interpreted by the ratio of failure stress to the allowable stress. B. F.S. for aircraft design may be close to 1 in order to reduce the weight of the aircraft. C. The lower F.S., the safer the structure, but more cost it may occur. D. F.S. is introduced to specify the allowable load for a structural member or mechanical member. 5. What is the largest internal normal stress in the bar below? The diameter of the bar is 10 m. A. 192 Pa B. 322 Pa C. 382 Pa D. 702 Pa 30 kN 10 KN 15 kN
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