Not every relation is a function. But every function is a relation. Function is just a part of relation.
The cubic function.
Range
A formula or graph are two ways to describe a math function. How a math function is described depends on the domain of the function or the complexity of the function.
The Mandelbrot graph is generated iteratively and so is a function of a function of a function ... and in that sense it is a composite function.
A penstock is a pressure conduit that delivers water from a reservoir to a turbine generator in a hydropower plant. It controls the flow of water and maintains high pressure, allowing the water to generate power as it flows through the turbine.
http://en.wikipedia.org/wiki/Penstock U can get the answer from the above link
penstock
A penstock is a pipe that carries water from the reservoir to the turbine in a hydroelectric power plant, while a pressure shaft is a vertical pipe that carries water under pressure from the penstock to the turbines. The penstock is typically horizontal and submerged in water, while the pressure shaft is vertical and carries water at high pressure.
A giant tube in a hydropower plant is typically known as a penstock. It is a large pipe or conduit that carries water from the reservoir to the turbines, where the potential energy of the water is converted into mechanical energy to generate electricity. The size of a penstock can vary depending on the capacity and design of the hydropower plant.
its connected at the start of penstock to reduce the "water hammering effect" in it.
ONLY 1 PENSTOCK that's all
Head race tunnel are Non pressurized tunnels and Penstock is the tunnel bearing pressure. As there is the breakdown in the Power and the water is stopped entering through the turbines, the pressurized flow of water in the penstock creates hammer effect and goes back to the HRT. So, keeping Fore bay in between HRT and Penstock helps reducing pressurized water to create Water Hammers. Hence, to reduce the back water pressure effect, the Fore bay is used in the Hydro power Plant.
Pen stock is made of pipe while Tunnel is not a pipe.Tunnel is made of concrete material.
A penstock, with an internal diameter of 1.3 m, supplies water at a head equivalent to 127.6 kg/cm2. There is a possibility of 23per cent increase in the pressure due to transient conditions. The design stress and the efficiency of the joint may be assumed to be 1023 kg/cm2 and 35 per cent respectively.Calculate the approximate wall thickness of the penstock required
The energy stored in water at the reservoir is gravitational potential energy due to its height above the turbine. As the water flows through the penstock and turbine, this potential energy is converted into kinetic energy and then ultimately into mechanical energy to turn the turbine and generate electricity. So, the type of energy changes as the water moves through the components of a hydropower system.
Well, how was hydroelectricity formed. First of all people built dams in order to make a reservoir ( man made lake). All the water from the reservoir would then go down the penstock ( a water tube). The penstock would then lead into the turbine ( fan with spinning blades ) . Water would then strike the blade and cause the blade to rotate. The rotating motion would then cause electricity. The generator would guide the turbine through the way. The electricity would then get sent through the power lines.