Discussion
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- Question
To ensure complete and rapid combustion of a fuel, some quantity of air, in excess of the theoretical or minimum air is supplied.
Options- A. Yes
- B. No
- Correct Answer
- Yes
- 1. One molecule of oxygen is __________ times heavier than the hydrogen atom.
Options- A. 12
- B. 14
- C. 16
- D. 32 Discuss
- 2. The calorific value of gaseous fuel is expressed in
Options- A. kJ
- B. kJ/kg
- C. kJ/m2
- D. kJ/m3 Discuss
- 3. The throttling process is an irreversible steady flow expansion process.
Options- A. Correct
- B. Incorrect Discuss
- 4. The process is adiabatic, if the value of n in the equation pvn = C, is
Options- A. 0
- B. 1
- C. ?
- D. ? Discuss
- 5. Coal gas consists mainly of hydrogen, carbon monoxide and various hydrocarbons.
Options- A. Agree
- B. Disagree Discuss
- 6. According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.
Options- A. first kind
- B. second kind Discuss
- 7. Kerosene is distilled at
Options- A. 65° to 220°C
- B. 220° to 345°C
- C. 345° to 470°C
- D. 470° to 550°C Discuss
- 8. High air-fuel ratio in gas turbines
Options- A. increases power output
- B. improves thermal efficiency
- C. reduces exhaust temperature
- D. do not damage turbine blades Discuss
- 9. If in the equation pvn = C, the value of n = ? , then the process is called
Options- A. constant volume process
- B. adiabatic process
- C. constant pressure process
- D. isothermal process Discuss
- 10. The efficiency of the dual combustion cycle for the same compression ratio, is __________ Diesel cycle.
Options- A. greater than
- B. less than
- C. equal to Discuss
Thermodynamics problems
Search Results
Correct Answer: 32
Correct Answer: kJ/m3
Correct Answer: Correct
Correct Answer: ?
Correct Answer: Agree
Correct Answer: second kind
Correct Answer: 220° to 345°C
Correct Answer: reduces exhaust temperature
Correct Answer: constant volume process
Correct Answer: greater than
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