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A square (10 mm x 10 mm) silicon chip is insulated on one side and cooled on the opposite side by atmospheric air in parallel flow at U8 = 20 m/s and T8 = 24°C. When in use, electrical power dissipation within the chip maintains a uniform heat flux at the cooled surface. If the chip temperature may not exceed 80°C at any point on its surface, what is the maximum allowable power? What is the maximum allowable power if the chip is flush mounted in a substrate that provides for an unheated starting length of 20 mm?
Air in a piston cylinder assembly undergoes a Carnot power cycle. The isothermal expansion and compression processes occur at 1400 Kelvin and 350 Kelvin, respectively. The pressures at the beginning and end of the isothermal compression are 100 kPa a..
A power plant operates a regenerative Rankine cycle with a reheat, one closed and one open feedwater heater and has a net power output of 1.2 x 109 Btu/hr. When the steam exits the boiler it's temperature is 1000°F and its pressure is 1400psi...
measure the velocity of air. If the deflection deflection (the vertical distance between the fluid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.25 kg/m3.
Probabilistic Hough transform in big O notation
Calculate the maximum shearing stresses in the cross-section and draw a profile of these shearing stresses showing their magnitudes at the critical points
a hydroelectric power station requires water to be pumped from its feeder dam to a secondary dam using two pumps each
design a packed tower for the absorption so2 from air. the so2 feed contain 0.0016 mol frac a into pure water in column
an internal combustion engine with clearance volume of 60 cm3 and compression ratio of 8.5 is modeled using the
r-134a enters the condenser of a refrigerator at 800kpa and 50oc at a rate of 0.018kgs and leaves at 800kpa as a
the acceleration of a particle is given by a -ks2 where a is in meters per second squared k is a constant and s is in
Hydrogen is contained in a piston-cylinder device at 14.7 psia and 15 ft3. At this state, a linear spring (F 8 x) with a spring constant of 15,000 lbf/ft is touching the piston but exerts no force on it. The cross-sectional area of the piston is 3..
A small, high-speed turbine operating on compressed air produces a power output of 0.1 hp. The inlet state is 120 psi, 200°F, and the exit state is 14.7 psi, - 20 F. Assuming the velocities to be low and the process to be adiabatic, find the required..
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