GATE ME
Thermodynamics
Calculation of Work and Heat
Previous Years Questions

## Marks 1

A mass $$m$$ of a perfect gas at pressure $${p_1}$$ and volume $${V_1}$$ undergoes an isothermal process. The final pressure is $${p_2}$$ and volume i...
Which of the following statements are TRUE with respect to heat and work? $$(i)$$ They are boundary phenomena $$(ii)$$ They are exact differentials $... A cylinder contains $$5\,\,{m^3}$$ of an ideal gas at a pressure of $$1$$ bar. This gas is compressed in a reversible isothermal process till its pres... Heat and work are The contents of a well-insulated tank are heated by a resistor of $$23\Omega$$ in which $$10A$$ current is flowing. Consider the tank along with its ... A pump handling a liquid raises its pressure from $$1$$ bar to $$30$$ $$bar.$$ Take the density of the liquid as $$990$$ $$kg/{m^3}$$. The isentropic ... A compressor undergoes a reversible, steady flow process. The gas at inlet and outlet of the compressor is designated as state $$1$$ and state $$2$$ r... For reversible adiabatic compression in a steady flow process, the work transfer per unit mass is ## Marks 2 An ideal gas undergoes a reversible process in which the pressure varies linearly with volume. The conditions at the start (subscript $$1$$) and at th... A mixture of ideal gases has the following composition by mass: If the universal gas constant is $$8314$$ $$J/kmol$$-$$K,$$ the characteristic gas ... $$1.5$$ $$kg$$ of water is in saturated liquid state at $$2$$ bar $$\left( {{v_f} = 0.001061\,\,{m^3}/kg,\,\,{u_f} = 504.0kJ/kg,\,\,{h_f} = 505\,\,kJ... A mono-atomatic ideal gas$$\left( {\gamma = 1.67,} \right.$$molecular weight$$=40\left. \, \right)$$is compressed adiabatically from$$0.1$$... A frictionless piston-cylinder device contains a gas initially at$$0.8MPa$$and$$0.015{m^3}.$$It expands quasi-statically at constant temperat... In a steady state steady flow process taking place in a device with a single inlet and a single outlet, the work done per unit mass flow rate is given... A$$100W$$electric bulb was switched on in a$$2.5\,m \times 3m \times 3m$$size thermally insulated room having a temperature of$${20^ \circ ... Nitrogen at an initial state of $$10$$ bar, $$1{m^3}$$ and $$300$$ $$K$$ is expanded isothermally to a final volume of $$2{m^3}$$. The $$p$$-$$v$$-$$T... A vertical cylinder with a freely floating piston contains$$0.1kg$$air at$$1.2$\$ bar and a small electrical resistor. The resistor is wired t...
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