資訊推薦

• 42.在彈性範圍內，一均質實心圓桿受軸向拉力作用而伸長。若將桿件直徑縮小一半，桿件長度與拉力都增為原 來之 2 倍，則桿件伸長量為原伸長量之多少倍？ (A) 8 倍 (B) 16 倍 (C)
• 43.兩彈簧之彈簧常數分別為 600N\/cm 與 400N\/cm，將兩者串聯成一彈簧組件。欲使此彈簧組件縮短 10cm，應 施加多少壓力？ (A) 1.2kN (B) 2.4kN (C
• 44.一矩形斷面鋼桿，橫斷面為 40mm×50mm，彈性係數 ES=200 GPa，蒲松比為 0.4，當此桿於彈性限度內承受 240kN 軸向拉力時，其橫斷面 50mm 邊長處之尺寸大小變化量為多少？
• 45.如【圖 45】所示，長度相同之鋼桿與銅桿共同懸掛一水平物體，物重 W=60kN，兩桿間距極小，鋼桿斷面積 100mm2，彈性模數 ES為 210 GPa，銅桿斷面積 300mm2，彈性模數為 1
• 46.樑長為 L 且自重不計，則關於樑受力產生最大彎矩之敘述，下列何者正確？ (A) 簡支樑中點承受集中荷重 P 作用，最大彎矩為 PL\/2 (B) 簡支樑全樑承受均佈荷重 w 作用，最大彎矩為
• 47.一矩形斷面樑之斷面寬為 b，高為 4b。若將斷面改成寬為 2b 之正方形，則此樑可承受之力矩會變為原來之 若干倍？ (A) 1 (B) 1\/2 (C) 1\/3 (D) \u
• 48.如【圖 48】所示，A 點彎矩之絕對值為多少 N-m？ (A) 400 (B) 800 (C) 1600 (D) 2000
• 9. (5%) Which are the possible solutions of function f(t) for the Laplace Transform (A) f= cosh(πt)
• 49.如【圖 49】所示，此樑之最大彎曲應力為多少？ (A) (B) (C) (D)
• 50.如【圖 49】所示，此樑之最大剪應力為多少？ (A) (B) (C) (D)
• 10. (5%) Which are the possible solutions of system of equations for x(t) and y(t), where y(0) = 1 a
• 11. (10%) Let Q be an n x n matrix. Then which of the following set is not a subspace? (A) ColQ (B)
• 12. (10%) Let M be a subset of R' containing two or more vectors. Then: (A) The span of any two
• 13. (10%) Which of the following statements is true for all n x n matrices O? (A) @ has n distinct e
• 14. (10%) Suppose that s, t, and u are vectors in G\" such that s is orthogonal to u and u is
• 15. (10%) An m x n matrix Xis invertible if (A) The columns of X span Rm (B) The reduced row echelon
• 12 (A) However (B) Indifferently (C) Accordingly (D) Contrad
• 13 (A) frame (B) destruct (C) collapse (D) conceal
• 14 (A) immense (B) illegitimate (C) surpassable (D) surmoun
• 15 (A) attached (B) declared (C) attributed (D) denounc
• 12 (A) However (B) Indifferently (C) Accordingly (D) Contrad
• 14 (A) immense (B) illegitimate (C) surpassable (D) surmoun
• 15 (A) attached (B) declared (C) attributed (D) denounc
• 12 (A) However (B) Indifferently (C) Accordingly (D) Contrad
• 14 (A) immense (B) illegitimate (C) surpassable (D) surmoun