Pressure characteristic of a mine fan is given by, P = -0.06 Q2 + 400, where P

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Pressure characteristic of a mine fan is given by, P = -0.06 Q2 + 400, where P is the pressure in Pa and Q the quantity in m3/s. The resistance of the mine is 0.19 Ns2/m8.An identical fan is installed in the mine to operate in series with the existing fan. The new mine
quantity in m3/s is

Options:

A . 75.6

B . 56.7

C . 50.8

D . 30.2

Answer: Option C

-NA-

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