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A 4.56ft3 rigid tank contains saturated refrigerant-134a at 100 psia. Initially, 11% of the volume is occupied by liquid and the rest by vapor. A valve at the top of the tank is now opened, and vapor is allowed to escape slowly from the tank. Heat is transferred to the refrigerant such that the pressure inside the tank remains constant. The valve is closed when the last drop of liquid in the tank is vaporized. Determine the total heat transfer for this process.
A piston-cylinder filled with air receives 10 kJ of heat and expands, doing 5 kJ of work. What is the change in internal energy of the air?
at an amusement park there are 200-kg bumper cars a b and c that have riders with masses of 40 kg 60 kg and 35 kg
a frictionless piston cylinder device contains 10kg of nitrogen initially at 200kpa and 27c. the nitrogen is now heated
steam at 10 mpa 6000c enters the first-stage turbine of an ideal rankine cycle with reheat. the steam leaving the
A satellite is in Earth with an altitude at perigee of 550 km and an altitude at apogee of 5000 km.
a tube with elastic modulus of 75 gpa is used to support a compressive load. it is required that this tube must not
r-22 in a pistoncylinder has mass 1 kg and temp. 10degc with a volume of0.02 m3 . initially state 1 the piston rests on
The pressure in a tire depends on the temperature of the air in the tire. The gage pressure of an automobile tire with a volume of 0.025 m3 is measured to be 210 kPa at 25 oC at sea level on a day with calm weather. If the temperature of the air in t..
Derive at least four concept designs to satisfy the given specification. Use short written descriptions and simple sketches to illustrate your ideas
An irreversible gas-turbine power plant has a compressor with an inlet state of 1 bar and 22°C and an outlet state of 4 bars and 470 K. The turbine has an inlet state of 4 bars and 1200 K and an exhaust state of 1 bar and 900 K. The environment is at..
In a four bar mechanism ABCD, AD is fixed and is 150 mm long. The crank AB is 40 mm long and rotates at 120 rpm clockwise, while the link CD = 80 mm oscillates about D. Link BC and AD are of equal length. Using the analytical/mathematical solution me..
the turbine rotor in the power plant of a ship as shown in fig. 3 has a weight of 12.75 kn with centre of gravity at g
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