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An ideal Otto cycle has a compression ratio of 13.5, takes in air at 95kPa and 20°C and is repeated 940 times per minute.
Using constant specific heats at room temperature, determine
A) the thermal efficiency of this cycle
B) the rate of heat input if the cycle is to produce 296 kW of power.
a baloon rises with a constant velocity.a load is tied by a rope to the basket. when the baloon is at altitude h0 the
A huge reservoir of air supplies a converging-diverging nozzle with throat and exit areas of 10 cm^2 and 25 cm^2 respectively. The reservoir pressure and temperature are 150 kPa and 20C. Determine the range of back pressure over which
compute (a) the interplanar spacing for the set of planes and (b) the atomic radius for the rhodium atom.
an elevated open stairway like the one in the sac is designed to be supported by four steel rods connecting the
A certain balloon is constructed of a material such that the pressure inside is related to the volume according to the relation PV^(-2/3)=constant. The balloon contains 2kg of ammonia initially at 0C, 60% quality. The balloon is now heated until the ..
Angela needs 20 quarts of 50% antifreeze solution in her radiator. She plans to obtain this by mixing some pure antifreeze with an appropriate amount of a 40% antifreeze solution. How many quarts of each should she use?
1. for each of the two proposed replacement presses determinenbspa. initial investment.nbspb. operating cash inflows.
The electricity consumption in the USA in 2009 was about 44% of the total energy consumption. Of that about 20% was produced by Nuclear Power Plants. Currently there are 104 Nuclear Power Plants operating in the country. What is the average capacity ..
a 600 mw coal-fired power plant has an overall thermal efficiency of 38. it is burning coal that has a heating value of
a hydraulic jump forms in a horizontal trapezoidal channel. the base width is 4m and the side slopes are 45 degrees.
a compressor receives air at 95kpa and 250c at low velocity. at the exit of the compressor air discharges at 1.52mpa
argon gas enters a turbine operating at steady state at 100 bar 325 k and expands adiabatically to 40 bar 235 k with no
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