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A heat engine (power cycle) is operating on a Carnot cycle and has a thermal efficiency of 75%. The waste heat from this engine is rejected to a nearby lake at 15oC at a rate of 14 kW. Determine the power output of the engine?
0.5 kg of water initially at 300 kpa 200oc is compressed in a piston-cylinder assembly to 1500 kpa 210oc. if heat
a gas turbine assume ideal brayton cycle has a pressure ratio of 10. it is connected to an electric generator with an
air enters a tank through an area of 0.2 ft2 with a velocity of 15 fts and a density of 0.03 slugft3. air leaves with a
a cylinderical specimen made of annealed 4135 steel with k equal to 150000 lbin2 and n equal to 0.27 has a diameter of
A household refrigerator with a coefficient of performance of 2.4 removes energy from the refrigerated space at a rate of 600 Btu/h. Evaluating electricity at , determine the cost of electricity n a month when the refrigerator operates for 360 hou..
question it is observed that snow lies stably on roofs with a slope of less than 24deg but that it slides off roofs
a pump supplies oil at 20 gpm to a 2 in diameter double-acting hydraulic cylinder. if the load is 1000lbsextending and
given a rectangular sample of ductile iron 60-40-18 with cross sectional dimensions 0.8 in x4 in calculate the stress
a three-blade helicopter blade rotates at 200 rpm. if each blade is 12 ft long and 1.5 ft wide estimate the torque
10 mol of an ideal gas at 5 atm at 298 k is stored in an insulated piston and cylinder arrangement. at these condition
water is heated by air in a heat exchanger. the water enters at 150 c and 0.2 mpa and leaves at 300 c and 0.2 mpa. the
1045 steel is carburized at 650 degree c for 500 hr. the carbon concentration is 0.6 wt at a position of 3.7 mm beneath
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