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A power cycle receives 1120 Btu by heat transfer from a reservoir at 1080o F and discharges energy by heat transfer to a reservoir at 280 o F. The thermal efficiency of the cycle is 68% of that for a reversible power cycle operating between the same reservoirs. For the actual cycle, determine the thermal efficiency and energy discharged to the cold reservoir, in Btu (with sketch
discuss the similarities and differences between coulomb friction damping with the damper used in sdof
a 50-mg railroad car moving with a velocity of 3 kmh is to be coupled to a 30-mg cae which is at rest determinea the
water flows through the horizontal y-fitting shown in figure p3.101. if the flowrate and pressure in pipe1 are q1 2.3
a closed steel bottle contains carbon dioxide at -20c x20 and the volume is 0.05m3. it has a safety valve that opens at
Estimate the mass of the gas in the tank in kg assuming the gas behaves as an ideal gas. If the gas warms up to 35 deg C as it sits in the sun all day, what would the pressure rise to?
A 1/10th scale model of an airplane is to be tested in a wind tunnel that operates with air at a pressure of 20 atmospheres. The plane is expected to fly at a speed of 500 [km/hr]. (a) What speed should the wind tunnel be run? (b) If the drag measure..
a force of f 1.00 7.00n is applied to an object that is pivoted about a fixed axis aligned along the z coordinate
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...
Air is compressed at steady state from 100 kPa, 300 K, to 600 kPa, 440 K with a mass flow rate of 4 kg/s. Heat transfer occurs at a rate of 42.3 kJ/kg of air flowing to cooling water circulating in a water jacket enclosing the compressor.
An electric arc considered as a black sphere of 5 mm diameter at a temperature of 5000 Celsius is situated 250 mm away from a metal dosk of 100 mm diameter. The disk is oriented at right angle to the normal to the arc and is open to radiation on both..
a pump steadily draws water at a mass flow rate of 20 lbms through a piping arrangement. the pressure at the inlet is
2103 v 40 v b c qv e0pr2d r qdvpe012 r 4.24 m 42 a parallel-plate air-gap capacitor has a capacitance of 0.14 f.
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