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The automatic transmission in a car receives 25 kW shaft work and gives out 24 kW to the drive shaft. The balance is dissipated in the hydraulic fluid and metal casing, all at 45oC, which in turn transmits it to the outer atmosphere at 20oC. What is the rate of entropy generation inside the transmission unit? What is it outside the unit?
a stack was sampled for 8 minutes. the gas velocity at stack conditions through the sampler was 15.0 ms and the area
this is concerned a little more into aerodynamics, what are the uses of wind tunnels including the importance of geometric and dynamic similarity and wind tunnel interference?
A ball is thrown vertically up with a velocity of 91 ft/sec at the edge of a 190-ft cliff. Calculate (a) the height h to which the ball rises and (b) the total time t after release for the ball to reach the bottom of the cliff.
steam having a specific enthalpy of 160 kjkg and pressure of 1 kpa enters an adiabatic pump. upon leaving the pump the
what size unf bolt made from sae grade 5 steel is needed to carry a static tensile load of 3000lb with a safety factor
a square aluminum plate 5 mm thick and 200 mm on a side is heated while vertically suspended in quiescent air at 40c. a
a 25-hp 240-v 77.8-a shunt motor has an armature resstence of 0.083 ohms and a field-circuit resistance of 125 ohms.
sap from a maple tree contains 5 sugar and 95 wateer on a dry basis. your evaporator will boil away 1.25 kg of water
two kilograms of saturated water vapor at 600 kpa are contained in a piston-cylinder device. the water expands
a power cycle operates between a high temperature reservoir at th k and a low temperature reservoir at tc 280 k. at
cylinder a and cylinder b contain 0.07 grams of helium and 0.4 grams of oxygen respectively. each of these gases is
a tank fitted with an electrical resistor holds 2 kg of nitrogen n2 initially at 1 bar. over a period of 10 minutes
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