A liquid-level system, such as the one shown in fig. 5–1, has a cross-sectional area of 3.0 ft 2 . the valve characteristics are qh 8 where q flow rate, cfm, and h level above the valve, ft. calculate the time constant for this system if the average operating level above the valve is (a) 3 ft (b) 9 ft
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oh god bless you and I didn't know
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