A. Heating occurs
B. Cooling occurs
C. Pressure is constant
D. Temperature is constant
Related Mcqs:
- On a P-V diagram of an ideal gas, suppose a reversible adiabatic line intersects a reversible isothermal line at point A. Then at a point A, the slope of the reversible adiabatic line (∂P/∂V)s and the slope of the reversible isothermal line (∂P/∂V)T are related as (where, y = Cp/Cv) ?
A. (∂P/∂V)S = (∂P/∂V)T
B. (∂P/∂V)S = [(∂P/∂V)T]Y
C. (∂P/∂V)S = y(∂P/∂V)T
D. (∂P/∂V)S = 1/y(∂P/∂V)T - What happens in a reversible adiabatic expansion process ?
A. Heating takes place
B. Cooling takes place
C. Pressure is constant
D. Temperature is constant - Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is___________________?
A. 300 × (32/7)
B. 300 × (33/5)
C. 300 × (333/7)
D. 300 × (35/7) - The work done in isothermal compression compared to that in adiabatic compression will be__________________?
A. Less
B. More
C. Same
D. More or less depending upon the extent of work done - Entropy change in case of reversible adiabatic process is________________?
A. Minimum
B. Zero
C. Maximum
D. Indeterminate - 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. TVγ-1 = constant
B. p1-γ.TY = constant
C. PVγ = constant
D. None of these - Adiabatic compression of a saturated water vapour makes it ____________________ ?
A. Supersaturated
B. Superheated
C. Both A. and B
D. Neither A. nor B - A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively) ?
A. Δ S1 is always Δ SR
C. Δ S1 is always > Δ SR
D. Δ S1 is always = Δ SR - 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
