Discussion
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- Question
The principal constituents of a fuel are
Options- A. carbon and hydrogen
- B. oxygen and hydrogen
- C. sulphur and oxygen
- D. sulphur and hydrogen
- Correct Answer
- carbon and hydrogen
- 1. 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
- 2. 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
- 3. 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
- 4. The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is always __________ one.
Options- A. equal to
- B. less than
- C. greater than Discuss
- 5. The absolute zero pressure can be attained at a temperature of
Options- A. 0°C
- B. 273°C
- C. 273 K
- D. none of these Discuss
- 6. 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
- 7. The efficiency of Otto cycle depends upon the specific heats of the working substance.
Options- A. Yes
- B. No Discuss
- 8. 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
- 9. 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
- 10. 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
Thermodynamics problems
Search Results
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: greater than
Correct Answer: none of these
Correct Answer: all of these
Correct Answer: No
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
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