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sample_exam_questions_2

# sample_exam_questions_2 - CE 335 Old exam questions(with...

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CE 335 Old exam questions (with solutions following) for Chapters 5-11 1] For the 2-D static truss system above: (a) Assuming that the members are each 3 m long, write a system of linear equations for the unknown reaction forces and forces on the truss members. (b) Is the problem overdetermined, underdetermined, or determinate? 2] Use Gaussian elimination with partial pivoting to solve the system of equations below. Show all steps. 2y + 3z = 4 6x + 2y + 2z = 8 3x + 6y + 7z = 11 3] Suppose that the cost of a production process scales with the fractional process efficiency x as C = x -1 + λ(1 - x) -2 where the first term describes the cost savings from higher efficiency, the second term describes the increase in cost from the more stringent tolerances needed to achieve higher efficiency, and λ is an adjustable positive parameter that sets the relative importance of the two terms. (As λ → 0, the minimum cost is achieved with x → 1; as λ → , the minimum cost is achieved with x → 0.)

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sample_exam_questions_2 - CE 335 Old exam questions(with...

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