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A closed system contains 2 kg of saturated steam at 3 MPa. The steam expands in a reversible process which can be represented by a straight line in a Ts Diagram. The final condition of the steam is 150 kPa and 200°C. The surroundings are constant temperature of 20°C. A) Sketch Ts diagram (if possible) b) calculate heat transferred from system. c) calculate work done by system. and d) calculate the entropy change of the surroundings.
determine the volume required to store 25kg of ethane at 320kpa and 35 degrees celsius. if the temperature rises to 65
A pump station has been designed to lift water out of a 6 metre deep pit (vented to atmosphere) via a centrifigual pump mounted at ground level. Calculate the Net Positive Suction Head (NPSH) for the system ?
determine the minimum no of teeth required on pinion in order to avoid interference which is to gear with 1 a wheel to
What is the total energy stored in the two capacitors when the series combination is connected to the battery?
Weld analysis, Two steel plates are joined with a butt weld using a weld throat h of 3/8 in. and the length of weld 1 of 4in.
what kind of metals are often recommended for use at low temperatures particularly when any sudden loading of the part
a speedboat travels at a constant speed of 15 ms while making a turn on a circular curve from a to b. if it takes 45s
a liquid-vapor mixture of h2o at 2 mpa is heated in a constant volume process. the final state is the critical point. a
consider a cylinder containing 4 moles of compressed argon to 10 bar and 298 k. the cylinder is housed in a big lab
it is 30degf outside. the temperature of the outside surface of a building is 33degf. the thickness of the building
Why do thermoplastics tend to become brittle in very cold weather?
Calculate the minimal round-trip time delay for a radio communications link between Los Angeles and the satellite.
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