A. Pressure remains constant
B. Pressure is increased
C. Temperature remains constant
D. None of these
Related Mcqs:
- Internal energy of an ideal gas___________________?
A. Increases with increase in pressure
B. Decreases with increase in temperature
C. Is independent of temperature
D. None of these - 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 - When a gas is subjected to adiabatic expansion, it gets cooled due to__________________?
A. Decrease in velocity
B. Decrease in temperature
C. Decrease in kinetic energy
D. Energy spent in doing work - What happens in a reversible adiabatic expansion process ?
A. Heating takes place
B. Cooling takes place
C. Pressure is constant
D. Temperature is constant - ________________ decreases during adiabatic throttling of a perfect gas?
A. Entropy
B. Temperature
C. Enthalpy
D. Pressure - _____________________ remains constant during the adiabatic cooling of moist air?
A. Wet bulb temperature
B. Dry bulb temperature
C. Relative humidity
D. Specific humidity - During a reversible isothermal expansion of an ideal gas, the entropy change is_________________?
A. +ve
B. 0
C. -ve
D. ∞ - During Joule-Thomson expansion of gases_________________?
A. Enthalpy remains constant
B. Entropy remains constant
C. Temperature remains constant
D. None of these - During a reversible isothermal expansion of an ideal gas, the entropy change is___________________?
A. +ve
B. 0
C. -ve
D. ∞ - 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)
