Discussion
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- Question
An isothermal process is governed by
Options- A. Boyle's law
- B. Charles' law
- C. Gay-Lussac law
- D. Avogadro's law
- Correct Answer
- Boyle's law
- 1. 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
- 2. 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
- 3. 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
- 4. The efficiency and work ratio of a simple gas turbine cycle are
Options- A. low
- B. very low
- C. high
- D. very high Discuss
- 5. 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
- 6. The efficiency of Stirling cycle is __________ Carnot cycle.
Options- A. greater than
- B. less than
- C. equal to Discuss
- 7. The action of steam in a steam turbine is
Options- A. static
- B. dynamic
- C. static and dynamic
- D. neither static nor dynamic Discuss
- 8. The reheat factor is the ratio of the
Options- A. cumulative heat drop to the isentropic heat drop
- B. isentropic heat drop to the heat supplied
- C. total useful heat drop to the total isentropic heat drop
- D. none of the above Discuss
- 9. The value of the reheat factor varies from
Options- A. 1.02 to 1.06
- B. 1.08 to 1.l0
- C. 1.2 to 1.6
- D. 1.6 to 2 Discuss
- 10. In a reaction turbine, when steam flows through the fixed blades,
Options- A. pressure increases while velocity decreases
- B. pressure decreases while velocity increases
- C. pressure and velocity both decreases
- D. pressure and velocity both increases Discuss
Thermodynamics problems
Search Results
Correct Answer: Correct
Correct Answer: greater than one
Correct Answer: flow processes
Correct Answer: very low
Correct Answer: zero
Correct Answer: equal to
Correct Answer: dynamic
Correct Answer: cumulative heat drop to the isentropic heat drop
Correct Answer: 1.02 to 1.06
Correct Answer: pressure decreases while velocity increases
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