Discussion
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- Question
Which of the following represents Otto cycle on temperature - entropy (T - s) diagram?
Options- A.
- B.
- C.
- D.
- Correct Answer
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- 1. When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.
Options- A. True
- B. False Discuss
- 2. When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel, the process is known as __________ of fuel.
Options- A. atomisation
- B. carbonisation Discuss
- 3. The constant pressure, constant volume and constant pvn processes are regarded as irreversible process.
Options- A. True
- B. False Discuss
- 4. Workdone in a free expansion process is
Options- A. zero
- B. minimum
- C. maximum
- D. positive Discuss
- 5. Which of the following is correct?
Options- A. Absolute pressure = Gauge pressure + Atmospheric pressure
- B. Gauge pressure = Absolute pressure + Atmospheric pressure
- C. Atmospheric pressure = Absolute pressure + Gauge pressure
- D. Absolute pressure = Gauge pressure - Atmospheric pressure Discuss
- 6. There is no change in internal energy in an isothermal process.
Options- A. Correct
- B. Incorrect Discuss
- 7. Which of the following is the lightest and most volatile liquid fuel?
Options- A. Gasoline
- B. Kerosene
- C. Fuel oil Discuss
- 8. One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.
Options- A. All
- B. 4/7
- C. 11/4
- D. 9/7 Discuss
- 9. Which of the following has the minimum atomic mass?
Options- A. Oxygen
- B. Sulphur
- C. Nitrogen
- D. Carbon Discuss
- 10. Carbonisation of coal consists of
Options- A. drying and crushing the coal to a fine powder
- B. moulding the finely ground coal under pressure with or without a binding material
- C. heating the wood with a limited supply of air to temperature not less than 280°C
- D. none of the above Discuss
Thermodynamics problems
Search Results
Correct Answer: True
Correct Answer: carbonisation
Correct Answer: True
Correct Answer: zero
Correct Answer: Absolute pressure = Gauge pressure + Atmospheric pressure
Correct Answer: Correct
Correct Answer: Gasoline
Correct Answer: 4/7
Correct Answer: Carbon
Correct Answer: none of the above
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