Discussion
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- Question
The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)
Options- A. r? - 1
- B. 1 - r? - 1
- C.
- D.
- Correct Answer
-
- 1. The property of the system, whose value for the entire system is equal to the sum of their values for the individual parts of the system is called extensive property
Options- A. Yes
- B. No Discuss
- 2. The __________ is obtained when carbonisation of coal is carried out at 500° to 700° C.
Options- A. soft coke
- B. hard coke
- C. pulverised coal
- D. bituminous coal Discuss
- 3. In a steady flow process, the ratio of
Options- A. heat transfer is constant
- B. work transfer is constant
- C. mass flow at inlet and outlet is same
- D. all of these Discuss
- 4. The elements are made up of minute and chemically invisible particles as atoms.
Options- A. True
- B. False Discuss
- 5. Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, ? = cp/cv, known as adiabatic index, and R = Gas constant)
Options- A.
- B. cp - cv = R
- C.
- D. Both (B) and (C) Discuss
- 6. Which of the following is a reversible non-flow process?
Options- A. Isochoric process
- B. Isobaric process
- C. Hyperbolic process
- D. all of these Discuss
- 7. The bomb calorimeter is used for finding the __________ calorific value of solid and liquid fuels.
Options- A. higher
- B. lower Discuss
- 8. The efficiency of the Carnot cycle may be increased by
Options- A. increasing the highest temperature
- B. decreasing the highest temperature
- C. increasing the lowest temperature
- D. keeping the lowest temperature constant Discuss
- 9. Carnot cycle has maximum efficiency for
Options- A. petrol engine
- B. diesel engine
- C. reversible engine
- D. irreversible engine Discuss
- 10. According to Regnault's law, the specific heat at constant pressure (cp) and specific heat at constant volume (cv) __________ with the change in pressure and temperature of the gas.
Options- A. change
- B. do not change Discuss
Thermodynamics problems
Search Results
Correct Answer: Yes
Correct Answer: soft coke
Correct Answer: all of these
Correct Answer: True
Correct Answer: Both (B) and (C)
Correct Answer: all of these
Correct Answer: higher
Correct Answer: increasing the highest temperature
Correct Answer: reversible engine
Correct Answer: do not change
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