Thermodynamics problems
- 1. According to Gay-Lussac law for a perfect gas, p/T = constant, if v is kept constant.
Options- A. True
- B. False Discuss
Correct Answer: True
- 2. There is a loss of heat in an irreversible process.
Options- A. True
- B. False Discuss
Correct Answer: True
- 3. All the commercial liquid fuels are derived from natural petroleum (or crude oil).
Options- A. True
- B. False Discuss
Correct Answer: True
- 4. When cut-off ratio is __________ the efficiency of Diesel cycle approaches to Otto cycle efficiency.
Options- A. zero
- B. 1/5
- C. 4/5
- D. 1 Discuss
Correct Answer: zero
- 5. The efficiency and work ratio of a simple gas turbine cycle are
Options- A. low
- B. very low
- C. high
- D. very high Discuss
Correct Answer: very low
- 6. The processes occuring in open system which permit the transfer of mass to and from the system, are known as
Options- A. flow processes
- B. non-flow processes
- C. adiabatic processes
- D. none of these Discuss
Correct Answer: flow processes
- 7. The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is
Options- A. equal to one
- B. less than one
- C. greater than one
- D. none of these Discuss
Correct Answer: greater than one
- 8. The universal gas constant of a gas is the product of molecular mass of the gas and the gas constant.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 9. An isothermal process is governed by
Options- A. Boyle's law
- B. Charles' law
- C. Gay-Lussac law
- D. Avogadro's law Discuss
Correct Answer: Boyle's law
- 10. The efficiency of Stirling cycle is __________ Carnot cycle.
Options- A. greater than
- B. less than
- C. equal to Discuss
Correct Answer: equal to
More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.