Discussion
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- Question
The volumetric or molar specific heat at constant pressure is the product of
Options- A. molecular mass of the gas and the specific heat at constant volume
- B. atomic mass of the gas and the gas constant
- C. molecular mass of the gas and the gas constant
- D. none of the above
- Correct Answer
- none of the above
- 1. The amount of heat given out by the complete combustion of 1 kg of fuel is known as calorific value of solid or liquid fuel.
Options- A. True
- B. False Discuss
- 2. One Joule (J) is equal to
Options- A. 1 N-m
- B. 1 kN-m
- C. 10 N-m/s
- D. 10 kN-m/s Discuss
- 3. The value of universal gas constant is same for all gases.
Options- A. Yes
- B. No Discuss
- 4. In open cycle gas turbine plants
Options- A. the indirect heat exchanger and cooler is avoided
- B. direct combustion system is used
- C. a condenser is used
- D. all of the above Discuss
- 5. The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)
Options- A. ?Q = T.ds
- B. ?Q = T/ds
- C. dQ = ds/T
- D. none of these Discuss
- 6. The root mean square velocity of the gas molecules is given by (where k = Boltzmann's constant, T = Absolute temperature, and m = Mass of one molecule of a gas)
Options- A.
- B.
- C.
- D.
Discuss
- 7. The area under the temperature-entropy curve (i. e. T - s curve) of any thermodynamic process represents the workdone during the process.
Options- A. Agree
- B. Disagree Discuss
- 8. Mond gas is obtained by
Options- A. partial combusion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
- B. carbonisation of bituminous coal
- C. passing steam over incandescent coke
- D. passing air and a large amount of steam over waste coal at about 650°C Discuss
- 9. The heat and mechanical energies are mutually convertible. This statement was established by
Options- A. Boyle
- B. Charles
- C. Joule
- D. none of these Discuss
- 10. The change of entropy, when heat is removed from the gas, is negative.
Options- A. Yes
- B. No Discuss
Thermodynamics problems
Search Results
Correct Answer: True
Correct Answer: 1 N-m
Correct Answer: Yes
Correct Answer: all of the above
Correct Answer: ?Q = T.ds
Correct Answer:
Correct Answer: Disagree
Correct Answer: passing air and a large amount of steam over waste coal at about 650°C
Correct Answer: Joule
Correct Answer: Yes
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