Which of the following processes does not occur in an ideal Rankine cycle steam

Question

Which of the following processes does not occur in an ideal Rankine cycle steam power plant? (A) Isentropic compression of the working fluid (B) Isentropic expansion of the working fluid (C) Isentropic heat transfer to the working fluid (D) Isothermal heat transfer from the working fluid

Which of the following is not a component of a vapour compression refrigeration machine? (A) Compressor (B) Evaporator (C) Condenser (D) Turbine

Question A18 Which of the following correctly describes the sequence of processes occurring in an ideal vapour compression refrigeration cycle? (A) Isenthalpic Throttling, Isobaric Evaporation, Isentropic Compression, Isobaric Condensing. (B) Isothermal Compression, Isobaric Evaporation, Isenthalpic Throttling, Isobaric Condensing. (C) Adiabatic Compression, Isenthalpic Evaporation, Isothermal Expansion, Isobaric Condensing. (D) Adiabatic Compression, Isothermal Expansion, Isenthalpic Throttling, Isobaric Evaporation.  

The pressure of an ideal gas drops significantly as it flows under steady state conditions through an insulated throttle valve. Which of the following does not remain constant? (A) Temperature (B) Specific internal energy (C) Specific enthalpy (D) Specific entropy

Which of the following statements is correct? A closed Thermodynamic System (A) Always has a constant mass (B) Always contains heat (C) Always contains work (D) Always has a constant volume

Explanation / Answer

1-c( heat tranfer is isobaric)

2-d

3-a

4- a b d ( only isenthelpic process)

5- a( with the definition of closed system)

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