Discussion
Home ‣ Mechanical Engineering ‣ Thermodynamics Comments
- Question
The property of a working substance which increases or decreases as the heat is supplied or removed in a reversible manner, is known as
Options- A. enthalpy
- B. internal energy
- C. entropy
- D. external energy
- Correct Answer
- entropy
- 1. Second law of thermodynamics defines
Options- A. heat
- B. work
- C. internal energy
- D. entropy Discuss
- 2. Which of the following is the extensive property of a thermodynamic system?
Options- A. Pressure
- B. Volume
- C. Temperature
- D. Density Discuss
- 3. The change of entropy, when heat is absorbed by the gas, is
Options- A. positive
- B. negative
- C. positive or negative Discuss
- 4. When a system changes its state from one equilibrium state to another equilibrium state, then the path of successive states through which the system has passed, is known as
Options- A. thermodynamic law
- B. thermodynamic process
- C. thermodynamic cycle
- D. none of these Discuss
- 5. The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.
Options- A. Boyle's law
- B. Charle's law
- C. Gay-Lussac law
- D. Joule's law Discuss
- 6. One kg of sulphur requires 1 kg of oxygen for complete combustion and produces 2 kg of sulphur dioxide.
Options- A. True
- B. False Discuss
- 7. The ultimate analysis of coal consists of the determination of the percentage of
Options- A. carbon
- B. hydrogen and nitrogen
- C. sulphur and ash
- D. all of these Discuss
- 8. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)
Options- A.
- B.
- C.
- D.
Discuss
- 9. The fuel mostly used in blast furnace for extracting pig iron from iron ores is
Options- A. hard coke
- B. soft coke
- C. pulverised coal
- D. bituminous coal Discuss
- 10. The heating of a gas at constant pressure is governed by
Options- A. Boyle's law
- B. Charles' law
- C. Gay-Lussac law
- D. Avogadro's law Discuss
Thermodynamics problems
Search Results
Correct Answer: entropy
Correct Answer: Volume
Correct Answer: positive
Correct Answer: thermodynamic process
Correct Answer: Joule's law
Correct Answer: True
Correct Answer: all of these
Correct Answer:
Correct Answer: hard coke
Correct Answer: Charles' law
Comments
There are no comments.More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.