Discussion
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- Question
Liquid fuels have higher calorific value than solid fuels.
Options- A. Yes
- B. No
- Correct Answer
- Yes
- 1. Hydrogen is the __________ substance.
Options- A. lightest
- B. heaviest Discuss
- 2. During which of the following process does heat rejection takes place in Carnot cycle?
Options- A. Isothermal expansion
- B. Isentropic expansion
- C. Isothermal compression
- D. Isentropic compression Discuss
- 3. Which of the following is the correct statement of the second law of thermodynamics?
Options- A. It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work.
- B. It is impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source.
- C. There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy.
- D. all of the above Discuss
- 4. The gas constant (R) is equal to the __________ of two specific heats.
Options- A. sum
- B. difference
- C. product
- D. ratio Discuss
- 5. The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion)
Options- A.
- B.
- C.
- D.
Discuss
- 6. The isothermal and isentropic processes are reversible non-flow processes.
Options- A. Agree
- B. Disagree Discuss
- 7. Which of the following gas has a minimum molecular mass?
Options- A. Oxygen
- B. Nitrogen
- C. Hydrogen
- D. Methane Discuss
- 8. Ericsson cycle consists of two constant pressure and two isothermal processes.
Options- A. Agree
- B. Disagree Discuss
- 9. Those substances which have so far not been resolved by any means into other substances of simpler form are called
Options- A. elements
- B. compounds
- C. atoms
- D. molecules Discuss
- 10. Which is the incorrect statement about Carnot cycle?
Options- A. It is used as the alternate standard of comparison of all heat engines.
- B. All the heat engines are based on Carnot cycle.
- C. It provides concept of maximising work output between the two temperature limits.
- D. all of the above Discuss
Thermodynamics problems
Search Results
Correct Answer: lightest
Correct Answer: Isothermal compression
Correct Answer: all of the above
Correct Answer: difference
Correct Answer:
Correct Answer: Agree
Correct Answer: Hydrogen
Correct Answer: Agree
Correct Answer: elements
Correct Answer: All the heat engines are based on Carnot cycle.
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