The formula of power, the formula of work and the definition of work

The formula of power, the formula of work and the definition of work


Definition of work:
A measure that describes the change of energy during the change of state of an object
The formula of work: w = f * s
Power formula: P = w / T = f * s / T = f * V



Power calculation formula?


p=w/t
p=UI
P=I^2 *R
P=Fv
P=U^2 /R



The flow rate is 1 cubic second and the drop is 5 meters. What kind of power generator can it drive?
Can you tell me the formulas and their units


W=hpV/T=5000W
Where h = 5 m, P = 1000 kg / m3, V / T = 1 m3 / S
So it can drive 5 kW generator



Water flow 0.2 cubic meters per second drop 170 meters need how much power of the hydraulic generator?


According to the formula, P = 9.81 × Q × h × η
Q --- flow
H --- water head (i.e. water drop)
η - mechanical efficiency
The generator should be 300kW, and the turbine should be selected according to 0.2 flow / 170m head