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An amount P must be invested now to allow withdrawals of $1,000 per year for the next 15 years and to permit $300 to be withdrawn starting at the end of year 6 and continuing over the remainder of the 15-year period as the $300 increases by 6% per year thereafter. That is, withdrawal at EOY seven will be $318, $337.08 at EOY eight, and so forth for the remaining years. The interest rate is 12% per year.
Hint: Draw a cash-flow diagram.
if the turbine inlet pressure in a rankine cycle is 5mpa and the inlet temperature is 350c determine the efficiency of
A gas is contained in a piston of 5 m3 at 100 KPa. Then the gas is compressed till its volume is reduced to 2.5 m3. If there was no exchange of heat from the system during the compression process, calculate the work required for the compression and t..
water flows steadily in a horizontal 125 mm diameter cast-iron pipe. the pipe is 150 m long and the pressure drop
helium is throttled from 1.2 mpa 20degc to a pressure of 100 kpa. the diameter of the exit pipe is so much larger than
Evaluate the maximum theoretical power that can be developed by the turbine, in kW, and the corresponding exit temperature.
a suppose the sound pressure level at a distance of 100 m from a single wind turbine is 55 db. what is the sound power
a piston-cylinder device contains 10 kg of water 150 c . initially 2 kg it is vapour phase. the water is then heated
team at a rate of 5 lbms enters an adiabatic turbine at 800 psia 1000 f and leaves at an actual condition of 10 psia
refrigerant r-134a enters a 1 cm constant diameter tube at 400 kpa and 30 degree c. the refrigerant leaves the tube at
air initially at 150 kpa 500k and occupying a volume of .02m3 undergoes two processes. first the air undergoes a
a piston held by a pin in an insulated cylinder shown in figure above right contains 2 kg water at 100c quality 98. the
Clearly establish whether the ATMOS can justifiably be called a perpetual motion machine, closely approximates one, or only appears to be one. Prepare a memorandum summarizing your findings - evaluate the inventor's claims.
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