Related Questions

For reversible adiabatic process, change in entropy is
A Maximum
B Minimum
C Zero
D Negative
The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is
A R loge 4
B R log10 4
C Cv log10 4
D Cv loge 4
The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process.
A Isobaric
B Isothermal
C Adiabatic
D None of these
During a reversible isothermal expansion of an ideal gas, the entropy change is
A +ve
B 0
C -ve
D ∞
What happens in a reversible adiabatic expansion process?
A Heating takes place
B Cooling takes place
C Pressure is constant
D Temperature is constant
Specific heat of a gas for a reversible adiabatic process is
A Negative
B Zero
C Infinity
D None of these
Which of the following is not correct for a reversible adiabatic process?
A $${\text{T}}{{\text{V}}^{\gamma - 1}}$$  = constant
B $${{\text{P}}^{1 - \gamma }}.{{\text{T}}^{\text{Y}}}$$  = constant
C $${\text{P}}{{\text{V}}^\gamma }$$  = constant
D None of these
What happens in a reversible adiabatic compression?
A Heating occurs
B Cooling occurs
C Pressure is constant
D Temperature is constant
High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:
A ΔH = 0 and ΔS = 0
B ΔH ≠ 0 and ΔS = 0
C ΔH ≠ 0 and ΔS ≠ 0
D ΔH = 0 and ΔS ≠ 0
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as
A Allotropic change
B Recrystallization
C Heat treatment
D Precipitation

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