Discussion
Home ‣ Mechanical Engineering ‣ Thermodynamics Comments
- Question
The efficiency of Otto cycle depends upon the specific heats of the working substance.
Options- A. Yes
- B. No
- Correct Answer
- No
- 1. The work ratio of simple gas turbine cycle depends upon
Options- A. maximum cycle temperature
- B. minimum cycle temperature
- C. pressure ratio
- D. all of these Discuss
- 2. The principal constituents of a fuel are
Options- A. carbon and hydrogen
- B. oxygen and hydrogen
- C. sulphur and oxygen
- D. sulphur and hydrogen Discuss
- 3. The standard value of atmospheric pressure taken at sea level is
Options- A. 1.013 bar
- B. 760 mm of Hg
- C. 1013 x 102 N/m2
- D. all of these Discuss
- 4. When a gas is heated at constant pressure
Options- A. its temperature will increase
- B. its volume will increase
- C. both temperature and volume will increase
- D. neither temperature not volume will increase Discuss
- 5. Which of the following is the correct statement?
Options- A. For a given compression ratio, both Otto and Diesel cycles have the same efficiency.
- B. For a given compression ratio, Otto cycle is more efficient than Diesel cycle.
- C. For a given compression ratio, Diesel cycle is more efficient than Otto cycle.
- D. The efficiency of Otto or Diessel cycle has nothing to do with compressioin ratio. Discuss
- 6. When the gas is heated at constant volume, the heat supplied
Options- A. increases the internal energy of the gas and increases the temperature of the gas
- B. does some external work during expansion
- C. Both (A) and (B)
- D. None of these Discuss
- 7. The gas constant (R) is equal to the
Options- A. sum of two specific heats
- B. difference of two specific heats
- C. product of two specific heats
- D. ratio of two specific heats Discuss
- 8. Which of the following gas has the highest calorific value?
Options- A. Coal gas
- B. Producer gas
- C. Mond gas
- D. Blast furnace gas Discuss
- 9. One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.
Options- A. 9/7
- B. 11/7
- C. 7/4
- D. 11/4 Discuss
- 10. As per Charles' law, the volume of a given mass of a perfect gas varies __________ as its absolute temperature, when the absolute pressure remains constant.
Options- A. directly
- B. indirectly Discuss
Thermodynamics problems
Search Results
Correct Answer: all of these
Correct Answer: carbon and hydrogen
Correct Answer: all of these
Correct Answer: both temperature and volume will increase
Correct Answer: For a given compression ratio, Otto cycle is more efficient than Diesel cycle.
Correct Answer: increases the internal energy of the gas and increases the temperature of the gas
Correct Answer: difference of two specific heats
Correct Answer: Coal gas
Correct Answer: 9/7
Correct Answer: directly
Comments
There are no comments.More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.