The efficiency ofpower transmission for H equal to 30m for hf equalto 12 is given by
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5.2 Power, head and flow rate
The power supplied by a plant, (the number of watts), is the rate at which it delivers energy: the number of joules per second. In a hydro plant this will obviously depend on the volume flow rate of the moving water - the number of cubic metres (m3) per second passing through the plant, usually represented by the symbol Q (think ‘Quantity’); g = acceleration due to gravity and H is ‘effective head’ of water.
It then follows from the equation shown in Figure 10 that this power will be:
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