How Hydropower Works. Hydropower is using water to power machinery or make electricity. Water constantly moves through a vast global cycle, evaporating from lakes and oceans, forming clouds, precipitating as rain or snow, then flowing back down to the ocean.urbines and generators convert the energy into electricity, which is then fed into the electrical grid to be used in homes, businesses, and by industry. To see a close up view of how the generator of a water turbine works, see the Hydropower Basics page.
Regards, ... Â·. Dear Sanjay, The wear rate is calculated as the specific wear rate (Wsp), which is given as follows, Wsp=V/LD mm3/N-m. where V, L and D are the total wear volume, normal load and the total sliding distance, respectively. ...
The Formula. The predetermined overhead rate for machine hours is calculated by dividing the estimated manufacturing overhead cost total by the estimated number of machine hours. This formula refers to the predetermined overhead because this overhead total is based on estimations, rather than the actual cost.or instance, if the manufacturer estimates $10,000 in overhead costs with 20,000 machine hours, the predetermined overhead rate is 50 cents per unit.