Entropy Generation - MCQs with Answers

Q1. What is the entropy generation?

a. increase in the entropy of a system due to internal irreversibility
b. decrease in the entropy of a system due to internal irreversibility
c. no change in entropy of a system
d. none of the above

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ANSWER: a. increase in the entropy of a system due to internal irreversibility



Q2. How is the entropy of a closed system increased?

a. by interaction of heat
b. by internal irreversibilities
c. by dissipative effect in which work is dissipated to increase internal energy of the closed system
d. all of the above

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ANSWER: d. all of the above



Q3. The entropy generation

a. does no depend upon path followed by a system
b. depends upon path followed by a system
c. takes place in reversible process
d. none of the above

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ANSWER: b. depends upon path followed by a system



Q4. When a process followed by a system is irreversibilities, then what is the entropy generation of the system?

a. less than zero
b. equals to zero
c. greater than zero
d. none of the above

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ANSWER: c. greater than zero



Q5. Which thermodynamic process cannot be plotted accurately on thermodynamic coordinates?

a. reversible process
b. irreversible process
c. both reversible and irreversible processes
d. none of the above

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ANSWER: b. irreversible process


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