Engineering Thermodynamics
Which of the following process can be made reversible with the help of a regenerator?

Constant pvn process
All of these
Constant volume process
Constant pressure process

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Engineering Thermodynamics
Work-done during adiabatic expansion is given by (where p1 v1, T1 = Pressure, volume and temperature for the initial condition of gas, p2, v2, T2 = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)

All of these
[m R (T1 - T2)] /(γ - 1)
(p1 v1 - p2, v2)/(γ - 1)
[m R T1/(γ - 1)][1 - (p2, v2 /p1 v1)]

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Engineering Thermodynamics
Carnot cycle consists of

Two constant pressure and two isentropic processes
Two isothermal and two isentropic processes
Two constant volume and two isentropic processes
One constant volume, one constant pressure and two isentropic processes

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