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Derive an expression for the linear battery model power output as a function of the internal-to-external resistance ratio. Nondimensionalize the power output by dividing it by E2 /Ri. Tabulate the dimensional power function with a spreadsheet and then plot it. At what point is the maximum nondimensional power achieved?
consider a reheat cycle with steam leaving the boiler and entering the turbine at 4 mpa and 400 c . after expanded in
cooling water enters a cooling tower at a rate of 1000 kgh and 70 degree c. water is pumped from the base of the lower
A well-insulated rigid closed tank contains a kg of saturated liquid-vapor water mixture at 1atm and quality 0.6842. The water is rapidly stirred by a 200Watt paddle source until it becomes saturated vapor.
Premium-quality racing bikes (such as Tour De France models) have used one-piece carbon-fiber composite frames (i.e. no joints at all!). What is the benefit of such a design?
The ladder has a uniform weight of 80 lb and rests against the smooth wall at B. If the coefficient of static friction at A is mu(a)= 0.4, determine if the ladder will slip. Take theta= 60 deg
Air initially at 290 K, 1 bar undergoes the following processes: polytropic compression to 5 bar with n = 1.19 and isentropic expansion to 1 bar. Sketch the processes on a T-s diagram, Determine the temperature of state 2 and
the power p required to drive a fan is believed to depend on density p flow rate q impeller dia. d and angular veloctiy
Air at 90 kpa and -7 C enters an adiabatic diffuser steadily with a velocity of 180 m/s and leaves with a low velocity at a pressure of 100 kpa. The exit area of the diffuser is 5 times the inlet area. Determine (a) the exit temperature and (b) th..
a solid shaft 200 mm in diameter rotates at f 20 revsec and is subjected to a bending moment of 21p kn.m. determine
A cantilevered beam with a rectangular cross section is loaded by a force perpendicular to the beam centerline at the free end. The cross section is 100mm high and 25 mm wide. The vertical load at the beam end is 40,000 N. Calculate how long the beam..
in a 1-shell and 2-tube heat exchanger cold water with inlet temperature of 20 degree c is heated by hot water supplied
a tube-and-shell heat exchanger with two shell passes and four tube passes the overall tea transfer coefficient is 700
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