Discussion
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- Question
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
- Correct Answer
- increasing the highest temperature
- 1. The bomb calorimeter is used for finding the __________ calorific value of solid and liquid fuels.
Options- A. higher
- B. lower Discuss
- 2. 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
- 3. 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.
Discuss
- 4. 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
- 5. 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
- 6. Carnot cycle has maximum efficiency for
Options- A. petrol engine
- B. diesel engine
- C. reversible engine
- D. irreversible engine Discuss
- 7. 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
- 8. The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.
Options- A. Zeroth
- B. First
- C. Second Discuss
- 9. The unit of energy is S. I. units is
Options- A. Joule (J)
- B. Joule metre (Jm)
- C. Watt(W)
- D. Joule/metre (J/m) Discuss
- 10. Select the correct statement as per Charles' law
Options- A. p.v = constant, if T is kept constant
- B. v/T = constant, if p is kept constant
- C. p/T = constant, if v is kept constant
- D. T/p = constant, if v is kept constant Discuss
Thermodynamics problems
Search Results
Correct Answer: higher
Correct Answer: all of these
Correct Answer:
Correct Answer: Yes
Correct Answer: soft coke
Correct Answer: reversible engine
Correct Answer: do not change
Correct Answer: First
Correct Answer: Joule (J)
Correct Answer: v/T = constant, if p is kept constant
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