00:01
Power is the work done every second.
00:03
Now it can be formulated as p is equal to w divided by t.
00:08
This is w divided by t.
00:10
Power is calculated in watt or it can also be calculated in joules per second.
00:18
Now work itself it is the change in energy that occurs in objects means change in current energy or potential energy.
00:24
So w is equal to del k it is equal to del p e.
00:29
So del p e is equal to mg times h2 minus h1 and del k e is equal to half m v2 square minus v1 square.
00:42
Now water flows from a reservoir at a rate of 3000 kg per minute to a turbine of 120 meters.
00:51
Below the efficiency of turbine is what? if we see the efficiency of turbine it is 80 percent.
00:58
Then here we have m which is mass flow rate is equal to 3000 kg per minute.
01:10
So here it is equal to what? it will come out to be equal to 50 kg per seconds.
01:18
H we have as 120 meters.
01:21
Potential energy from water will be converted as input energy from the turbine...