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102年 - 102 國立中山大學_碩士班招生考試_電機系(丙組):資料結構#110205
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題組內容
6.
(1) [5 points] Please convert the infix expression shown below into postfix form. Ax(B/(C-D)+E)xxF-G
相關申論題
(2) [10 points] Tell us the results of preorder and postorder traversals for the following binary tree.
#471764
(d) [5 points] Let n be the radius of a circle C and A(n) be the area of C. Let T2(n)=|sinθ|xlog A(n)= O(f(n) . Derive the function f(n).
#471765
(a) Calculate the Z matrix after the line between Bus 2 and Bus 4 is removed; (15%)
#471766
(b) Assuming the bus voltages before fault are all 1.0p.u. Calculate the short circuit current when a three-phase short-circuit fault occurred at Bus 3 for (a) and bus voltages after this fault. (10%)
#471767
(a) the zero-, positive- and negative-sequence line-to-neutral voltages ; (5%)
#471768
(b) the zero-, positive- and negative-sequence line-to-line voltages; (5%)
#471769
(c) the zero-, positive- and negative-sequence line currents. (5%) (All answers should be in p.u.)
#471770
3.Calculate the line flows and power flows from Bus i to Bus j and Bus j to Bus i for Fig. 2 and the line loss for this line (all values in Fig. 2 are in p.u.). (20%)
#471771
(a) Determine the swing equation and the initial operating power angle. (10%)
#471772
(b) Calculate the critical clearing time for the generator when a three-phase bolted short-circuit at the generator terminals causes Pe =0. (15%)
#471773
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