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A gas in a piston-cylinder undergoes a Carnot power cycle. The gas expands and compresses isothermally between two reservoirs at 600 K and 300 K. Determine a) the thermal efficiency, b) the percent change in the thermal efficiency if i) the hot reservoir is increased 20% while the cold remains the same K, ii) the cold reservoir decreases 20% while the hot remains the same and iii) if the hot reservoir increases 20% and the cold decreases 20%.
How much oil must be released from a press cylinder with a 20 in bore to relieve the pressure from 2800 psi to 0 psi if the ram is extended 20 in? The compressibility of the fluid is .525% per thousand psi.
water in 50 liter rigid container is initially at 500 kpa and 350c. as the result of heat transfer the water obtains
A pin-connected structure consists of a rigid beam ABCD and two supporting bars. Bar (1) is an aluminium alloy [E = 70 GPa] with a cross-sectional area of A1 = 2,400 mm2. Bar (2) is a bronze alloy [E = 100 GPa] with a cross-sectional area of A2 = 6,0..
a mass of 3 kilograms of steam at 2 mpa and 250degc are contained in a rigid tank. how much heat must be removed from
air enters a well-insulated nozzle with a pressure of 1000 kpa a temperature of 527degc and a velocity of 20 ms. the
Describe the principle and operation of an hearth furnace. Possible references: Making and Shaping of Steels by the American Society of Metals and Google resources.
a locomotive car of mass 2000 kg traveling at a velocity v10msec is stopped at the end of tracks by a spring-damper
Nitrogen gas at 300 K flows into a well-insulated device operating at steady-state. There is no power supply to this device. The device has two exit streams, 2/3 of the nitrogen (by mass) leaves at 400 K and 1 bar. The remainder of the nitrogen also ..
A small hydroelectric power plant produces electrical power at a rate of 30 kW. The plant utilizes a stream of water that drops 40 m from a lake to the turbine and flows at a rate of 100 kg/s. What is the efficiency of the turbine-generator?
an air conditioner uses r134 the condenser pressure is 1400 kpa and the evaporator pressure is 201 kpa. find the cycle
A piston cylinder device initially contains compressed liquid water at 20degreesC and 200kPa. It is heated in an isobaric process (process 1) until it contains only saturated liquid. At this point it occupies a volume of 0.0021m3.
Long-Term debt, with an incremental borrowing rate of 8% and capital stock, with the information.
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