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Engineering · Mechanical Engineering
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a) Senaraikan tujuh dimensi asas. Apakah kepentingan tujuh dimensi ini? List the seven primary dimensions. What is significant about these seven? (3 markah/marks) b) Air sejuk memasuki sebatang paip, dimana ia dipanaskan oleh suatu punca haba luar (Rajah S1b) Suhu air di bahagian masuk dan keluar alah Tn dan Toa masing-masing Jumlah kadar pemindahan haba dari sekitaran ke air di dalam paip ialah Di mana m ialah kadar alir jisim air melalui paip, dan op ialah haba tentu air. Tuliskan dimensi-dimensi asas untuk setiap sebutan tambah dalam persamaan ini, dan buktikan bahawa persamaan adalah kehomogen dimensi. Tunjukkan semua jalan kerja Cold water enters a pipe, where it is heated by an external heat source (Figure Q1b). The inlet and outlet water temperatures are Tn and T respectively. The total rate of heat transfer è from the surroundings into the water in the pipe is where in is the mass flow rate of water through the pipe, and c, is the specific heat of the water. Write the primary dirmensions of each additive term in the equation, and verity that the equation is dimensionally homogeneous. Show all your work in T. out Rajah S1b / Figure Q1b (6 markah/marks)

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