Related Questions

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
The change in __________ is equal to the reversible work for compression in steady state flow process under isothermal condition.
A Internal energy
B Enthalpy
C Gibbs free energy
D Helmholtz free energy
For an isothermal reversible compression of an ideal gas
A Only ΔE = 0
B Only ΔH =0
C ΔE = ΔH = 0
D DQ = dE
What happens in a reversible adiabatic compression?
A Heating occurs
B Cooling occurs
C Pressure is constant
D Temperature is constant
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
For minimum work in multistage compression, assuming same index of compression in all stages
A Work done in first stage should be more
B Work done in subsequent stages should increase
C Work done in subsequent stages should decrease
D Work done in all stages should be equal
Which of the following processes are thermodynamically reversible?
A Throttling
B Free expansion
C Constant volume and constant pressure
D Isothermal and adiabatic
Which of the following processes can not be made reversible even under ideal condition of operation?
A Free expansion of a gas
B Compression of air in a compressor
C Expansion of steam in a turbine
D All of the above
6 men or 8 women can do a work in 18 days. How many days will it require to complete the whole work if 3 men and 5 women work together?
A 10 days
B 12 days
C 14 days
D 16 days
The minimum time Mr. and Mrs. Ahmed require to reach the market from their house by walking is 25 minutes and 20 minutes prospectively. If Mr. and Mrs . Ahmed decided to go to the market together by walking, what is the minimum time they will require to reach the market?
A 15 minutes
B 20 min
C 22.5 min
D 25 min

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