Discussion
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- Question
When a fluid is allowed to expand suddenly into a vaccum chamber through an orifice of large dimensions, the process is known as free expansion process.
Options- A. True
- B. False
- Correct Answer
- True
- 1. According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.
Options- A. remains constant
- B. increases
- C. decreases Discuss
- 2. Stirling cycle consists of
Options- A. two constant volume and two isentropic processes
- B. two constant volume and two isothermal processes
- C. two constant pressure and two isothermal processes
- D. one constant volume, one constant pressure and two isentropic processes Discuss
- 3. An open cycle gas turbine works on
Options- A. Carnot cycle
- B. Otto cycle
- C. Joule's cycle
- D. Stirling cycle Discuss
- 4. The natural solid fuel is
Options- A. wood
- B. coke
- C. anthracite coal
- D. pulverised coal Discuss
- 5. The compression ratio is the ratio of
Options- A. swept volume to total volume
- B. total volume to swept volume
- C. swept volume to clearance volume
- D. total volume to clearance volume Discuss
- 6. The efficiency of Carnot cycle depends upon
Options- A. temperature limits
- B. pressure ratio
- C. volume compression ratio
- D. cut-off ratio and compression ratio Discuss
- 7. The amount of heat required to raise the temperature of unit mass of a gas through one degree at constant pressure is called specific heat at constant pressure.
Options- A. True
- B. False Discuss
- 8. The entropy is a point function and thus it is a property of the same.
Options- A. Correct
- B. Incorrect Discuss
- 9. The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)
Options- A. ?Q = T.ds
- B. ?Q = T/ds
- C. dQ = ds/T
- D. none of these Discuss
- 10. In open cycle gas turbine plants
Options- A. the indirect heat exchanger and cooler is avoided
- B. direct combustion system is used
- C. a condenser is used
- D. all of the above Discuss
Thermodynamics problems
Search Results
Correct Answer: increases
Correct Answer: two constant volume and two isothermal processes
Correct Answer: Joule's cycle
Correct Answer: wood
Correct Answer: total volume to clearance volume
Correct Answer: temperature limits
Correct Answer: True
Correct Answer: Correct
Correct Answer: ?Q = T.ds
Correct Answer: all of the above
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