A pump is used to pump water from a reservoir to a water tank as shown in the figure below. Most pumps have a pump curve that relates the pump power requirement to the flow rate, like the one provided in the figure. Estimate the flow rate provided by the pump. The overall loss coefficient K = 4. Hp (m) 25 el. 20 m 20 Water 15 el.5 m 10 10-cm-dia. (Pump 0.05 0.1 0.15 0.2 0.25 Q(m'/s) O Q = 0.29 m /s O Q = 0.21 m2/s O Q = 0.25 m³/s O 0 = 019 m3/s

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Corrosion control methods

Corrosion may be defined as the method in which metals are attacked on their exteriors by gases existing in the atmosphere, converting them to their oxides, nitrides, sulfides, etc.