Please help me You are to develop a functioning Power Supply that will convert 120Vac from
the wall, and convert it into either a positive 5V or 12V supply or a negative
power supply. The supply will be tested with a .5 Amp load, the supply should
hold steady to the designed voltage level (ie 5V or 12V). There should be no
more than 1% ripple. You have the choice of Half-wave, Full-wave or Bridge
rectifier in your design.

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Wiy doeres rere okhn a pump whon working betwon the same pressure range?

Liquid flows at steady state at a rate of 2 lb/'s through a pump, which operates to raise the elevation of the liquid 100 ft from control volume inlet to exit. the liquid specific enthalpy at the inlet is 40.09 btu/lb and at the exit is 40.94 btub. the pump requires 3 btu/s of power to operate. if kinetic energy effects are negligible and gravitational acceleration is 32.174 tt/s, the heat transfer rate associated with this steady state process is most closely 1)-2,02 btu/s from the liquid to the surroundings 2)-3.98 btu/s from the surroundings to the liquid. 3)-4.96 btu/s from the surroundings to the liquid. 4)-1.04 btu/s from the liquid to the surroundings.