Thermodynamics problems
- 1. The specific heat at constant volume is
Options- A. the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure
- B. the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume
- C. the amount of heat required to raise the temperature of 1 kg of water through one degree
- D. any one of the above Discuss
Correct Answer: the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume
- 2. The heating and expanding of a gas is called thermodynamic system.
Options- A. Yes
- B. No Discuss
Correct Answer: No
- 3. The total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as
Options- A. law of equipartition of energy
- B. law of conservation of energy
- C. law of degradation of energy
- D. none of these Discuss
Correct Answer: law of equipartition of energy
- 4. Otto cycle is also known as
Options- A. constant pressure cycle
- B. constant volume cycle
- C. constant temperature cycle
- D. constant temperature and pressure cycle Discuss
Correct Answer: constant volume cycle
- 5. The heat absorbed during a polytropic process is
Options- A.
x Workdone - B.
- C.
- D. all of these Discuss
Correct Answer: all of these
- 6. A process, in which the temperature of the working substance remains constant during its expansion or compression, is called
Options- A. isothermal process
- B. hyperbolic process
- C. adiabatic process
- D. polytropic process Discuss
Correct Answer: isothermal process
- 7. Producer gas is obtained by
Options- A. partial combustion 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
Correct Answer: partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
- 8. A closed system is one in which heat and work crosses the boundary of the system but the mass of the working substance does not crosses the boundary of the system.
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 9. The free expansion process is a constant enthalpy process.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 10. When the expansion or compression takes place according to the law pvn = C, the process is known as
Options- A. isothermal process
- B. adiabatic process
- C. hyperbolic process
- D. polytropic process Discuss
Correct Answer: polytropic process
More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.