A closed system undergoes a thermodynamic cycle with three steps: process 1-2 (from state 1 to state 2), process 2-3 (from state 2 to state 3), process 3-1 (from state 3 to state 1). During process 1-2, the system internal energy increases by 20J, during process 3-1

Q: of 2 kg in a closed system undergoes three processes in series: Process 1-2: isochoric process from…

A: Given data p1 = 1 bar, V1= 4 m^3 P2 = 2 bar V3 = 2 m3 V4 = 1 m3 Mass of gas (m) = 2 kg

Q: A closed system consisting of 10 Ib of air undergoes a polytropic process from p1 = 80 lbf/in?, v1 =…

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Q: An oil pump operating at steady state delivers oil at a rate of 11 lb/s through a 1-in-diameter exit…

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Q: A closed system consisting of 10 lb of air undergoes a polytropic process from p₁ = 65 lbf/in², v₁ =…

A: Given:Mass of air, m=10 lbInitial pressure of air, P1=65 lb/in2Initial volume of air, v1=4…

Q: An isolated system is at rest. There is no change in the system potential energy. What is the change…

A: Solution: The internal energy of a system is determined by the random, uneven molecular movement; in…

Q: During a steady flow process, the pressure of the working substance drops from 200 to 20 psia, the…

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Q: 0.08 bar. The turbine develops 9000 lings occurs at a rate of 590 kW. Negl xit. rmine the exit…

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Q: Steam enters a turbine operating at steady state at 750°F and 450 lbf/in² and leaves as a saturated…

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Q: 2 kg of water vapor in a piston-cylinder assembly expands at a constant pressure of 300 kPa (3.0…

A: The mass of water vapor is .The pressure is .The final volume is .

Q: Steam in a piston-cylinder assembly undergoes a polytropic process, with n = 2, from an initial…

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Q: In the rotational frame, work done between two instances of rotational states is nothing but the…

A: The overall work done to turn a rigid body through a point almost a fixed pivot is the sum of the…

Q: (True or False) Work is always given by the integral ∫PdV.

A: workdone in a thermodynamic process is given as ∫PdV.

Q: Steam in a piston-cylinder assembly undergoes a polytropic process, with n=2, from an initial state…

A: Given data  Process is polytropic  n =  2 V1 = 1.75440 ft3 P1 = 350 lbf/in2 u1 = 1322.4 Btu/lb  v2 =…

Q: piston–cylinder assembly contains 0.1 lb of propane.  The propane expands from an initial state…

A: Given:mass of propane, m=0.1 lbinitial pressure ,P1=60 lbf/in2final pressure ,P2=10 lbf/in2initial…

Q: A closed system consisting of 10 lb of air undergoes a polytropic process from p₁ = 80 lbf/in². v₁…

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Q: A closed system consists of gas of 2 kg initially in state 1 with P1 = 4bar and specific volume v1 =…

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Q: Refrigerant R-134a contained within a piston-cylinder device undergoes isobaric heating processes…

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Q: A closed system undergoes a thermodynamic cycle with three steps: process 1-2 (from state 1 to state…

A: Calculated net work in this cycle in joule.

Q: The arrangement of heat engines used to develop the thermodynamic temperature scale.

A: Consider the system having three heat engines working on the Carnot cycle.

Q: thermodynamic cycle with three steps: process 1-2 (from state 1 to state 2), process 2-3 (from state…

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Q: An oil pump operating at steady state delivers oil at a rate of 10 lb/s through a 1-in.-diameter…

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.