In current service, 20 kg s^-1 cooling water at 12⁰C must be circulated through a coil inside a fermenter to maintain the temperature at 37⁰C The coil is 150 m long with pipe diameter 12 cm; the exit water temperature is 28⁰C After the inner and outer surfaces of the coil are cleaned it is found that only 13 kg s^-1 cooling water is required to control the fermentation temperature. Calculate the overall heat-transfer coefficient before cleaning. What fraction of the total resistance to heat transfer before cleaning was due to fouling deposits?____________

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#Question id: 14389

#Section 1: Engineering Mathematics

Find the area of the triangle whose vertices are (-2, 6), (3, -6) and (1, 5).

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#Question id: 14390

#Section 1: Engineering Mathematics

If the points (2, -3), (k, -1) and (0, 4) are collinear, then find the value of 4k. 

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#Question id: 14391

#Section 1: Engineering Mathematics

Find the area of the triangle with vertices P(4, 5), Q(4, -2) and R(-6, 2).

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#Question id: 14392

#Section 1: Engineering Mathematics

 If  , then the value of x is 

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#Question id: 14393

#Section 1: Engineering Mathematics

If the system of equations 2x + 3y + 5 = 0, x + ky + 5 = 0, kx — 12y — 14 = 0 has non-trivial solution, then the value of k is 

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#Question id: 14394

#Section 5: Bioprocess Engineering and Process Biotechnology

1.0 timol of an enzyme that contains five active sites per molecule converts 1.0 pmol substrate every 2 microseconds. Calculate catalytic centre activity (sec^-1). ......10^5