Discussion
Home ‣ Mechanical Engineering ‣ Thermodynamics Comments
- Question
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
- Correct Answer
- 1 N-m
- 1. The value of universal gas constant is same for all gases.
Options- A. Yes
- B. No Discuss
- 2. 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
- 3. 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
- 4. The entropy is a point function and thus it is a property of the same.
Options- A. Correct
- B. Incorrect Discuss
- 5. The amount of heat required to raise the temperature of unit mass of a gas through one degree at constant pressure is called specific heat at constant pressure.
Options- A. True
- B. False Discuss
- 6. 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
- 7. 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 Discuss
- 8. 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
- 9. 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
- 10. 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
Thermodynamics problems
Search Results
Correct Answer: Yes
Correct Answer: all of the above
Correct Answer: ?Q = T.ds
Correct Answer: Correct
Correct Answer: True
Correct Answer: True
Correct Answer: none of the above
Correct Answer:
Correct Answer: Disagree
Correct Answer: passing air and a large amount of steam over waste coal at about 650°C
Comments
There are no comments.More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.