Discussion
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- Question
The free expansion process is a constant enthalpy process.
Options- A. Correct
- B. Incorrect
- Correct Answer
- Correct
- 1. A closed system is one in which heat and work crosses the boundary of the system but the mass of the working substance does not crosses the boundary of the system.
Options- A. Yes
- B. No Discuss
- 2. Producer gas is obtained by
Options- A. partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
- B. carbonisation of bituminous coal
- C. passing steam over incandescent coke
- D. passing air and a large amount of steam over waste coal at about 650°C Discuss
- 3. A process, in which the temperature of the working substance remains constant during its expansion or compression, is called
Options- A. isothermal process
- B. hyperbolic process
- C. adiabatic process
- D. polytropic process Discuss
- 4. The heat absorbed during a polytropic process is
Options- A.
x Workdone - B.
- C.
- D. all of these Discuss
- 5. Otto cycle is also known as
Options- A. constant pressure cycle
- B. constant volume cycle
- C. constant temperature cycle
- D. constant temperature and pressure cycle Discuss
- 6. When the expansion or compression takes place according to the law pvn = C, the process is known as
Options- A. isothermal process
- B. adiabatic process
- C. hyperbolic process
- D. polytropic process Discuss
- 7. The state of a substance whose evaporation from its liquid state is complete, is known as
Options- A. vapour
- B. perfect gas
- C. air
- D. steam Discuss
- 8. The ratio of molar specific heats for monoatomic gas is
Options- A. 1
- B. 1.4
- C. 1.67
- D. 1.87 Discuss
- 9. The state of a substance whose evaporation from its liquid state is partial, is known as steam.
Options- A. Agree
- B. Disagree Discuss
- 10. The main cause for the irreversibility is
Options- A. mechanical and fluid friction
- B. unrestricted expansion
- C. heat transfer with a finite temperature difference
- D. all of the above Discuss
Thermodynamics problems
Search Results
Correct Answer: Yes
Correct Answer: partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
Correct Answer: isothermal process
Correct Answer: all of these
Correct Answer: constant volume cycle
Correct Answer: polytropic process
Correct Answer: perfect gas
Correct Answer: 1.67
Correct Answer: Disagree
Correct Answer: all of the above
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