A site with a mountain stream has an effective head of 25 m and a flow rate of 600 liters per minute. The plant efficiency is 80%. Calculate the power carried by the stream. g = 10 ms-2, ρ (water) = 1000 kg/m3...

 A pulse traveling along string of linear mass density is described by the wave function, 

where, is the amplitude of the wave at x. What is the ratio of the power carried by this wave at a point x to the power carried by the wave at the origin?

Steam generators in a "typical" PWR in the USA have thefollowing operating conditions:

Side Pressure,MPa(absolute)
Primary loop 15.5
Secondary loop 6.2

InletTemperature,°C Outlet Temperature,°C

Primary side 315 (liquidwater) 275 (liquid water)

Seconadary loop 220 (liquidwater) 275 (saturated steam)

(1) Calculate the mass flow rate (gallon per minutes) in theprimary and secondary loop
respectively if the reactor is rated at 1000 MWe.
(2) The temperature of the sea water used in the condensing processincreases by
approximately 11.5 °C. Note that 34% of thermal power has beenconverted to
mechanical (turbine)-electrical (generator). Calculate the massflow rate (gallon per
minutes) in the tertiary loop.
(3) About 11 000 gallon per minutes of water is lost to evaporationin a cooling tower.
Calculate the heat lost by evaporation in W.

The thermal efficiency of a nuclear powerplant is 34%