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Hydrogen at 25 bar, 450°C enters an adiabatic turbine and expands to 2 bar, 160°C with a mass flow rate of 0.2 kg/s. Determine the power produced and the isentropic efficiency.
suppose we select an srs of size n 100 from a large population having proportion p of successes. let p be the
refrigerant 134a at -10degc 1.4 bar and a mass flow rate of 280 kghr enters an insulated compressor operating at steady
saturated liquid water is heated at constant pressure in a steady-flow device until it is a saturated vapor. calculate
a tennis ball is struck from a height of 7.5 ft. it strikes the smooth ground at a distance of 20 ft away and bounces
the 150lb car of an amusement park ride is connected to a rotating telescopic boom.a when r 17ft the car is moving on
the height of the water level in mineral water bottles has a mean of 140 mm and a standard deviation of 4 mm. assume
suppose x y and c represent the length width and perimeter of a flat rectangular sheet metal part. note that x is a
a heat pump is to be used to heat a building during the winter. the building is to be maintained at 22.9oc at all
steam at 1 bar enters an adiabatic heat exchanger with a quality of 0.896 and exits as a saturated liquid. the steam is
a brick wall 3 m high 7.5 m wide and 200 mm thick has a thermal conductivity of 0.7 wmcelcius. the temperature on the
suppose a heat engine is connected to two energy reservoirs one apool of molten aluminum 660degc and the other a block
a spherical cryosurgical probe may be imbedded in diseased tissue for the purpose of freezing and thereby destroying
a refrigerator freezer compartment is maintained at a temperature of -15degf by removing heat at a rate of 4500 btuhr.
air enters the compressor of a regenerative gas-turbine engine at 300 k and 100 kpa where it is compressed to 800 kpa
a rigid closed tank of volume 3 m3 contains 5 kg of wet steam at a pressure of 200 kpa. the tank is heated until the
a.calculate the enthalpy entropy and gibbs free energy changes when 10g of supercooled liquid silver solidifies
a charge of -3.30 microc is fixed in place. from a horizontal distance of 0.0435 m a particle of mass 7.65 10-3 kg and
a modified brayton cycle is to be analyzed using the air-standard assumption with constant specific heats at a
The piston is then move in,and heat is rejected bt the air reversibly at constant pressure until the volume is the same as it was initially.Calculate the net heat flow and the overall change of entropy.sketch the process of p-V and T-s diagram.
find the momentum and buoyant length scales.
describe on your own words the three strengthen mechanism for metals i.e. grain size reduction solid solution
minimum weight design of a variable shape three-bar truss.numerical solution using the matlab optimization toolbox
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