Which of the following cycles is not a reversible cycle_____________________?

Related Mcqs:

1. Which of the following is an irreversible cycle_____________________?

   A. carnot
   B. Stirling
   C. ericsson
   D. all of the above
   E. none of the above

2. Which of the following cycles has maximum efficiency_____________?

   A. Rankine
   B. Stirling
   C. Carnot
   D. Brayton
   E. Joule

3. If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling cycle as compared to Carnot cycle___________________?

   A. more
   B. less
   C. equal
   D. depends on other factors
   E. none of the above

4. Stirling and Ericsson cycles are__________________?

   A. reversible cycles
   B. irreversible cycles
   C. quasi-static cycles
   D. semi-reversible cycles
   E. adiabatic irreversible cycles

5. In order that a cycle be reversible, following must be satisfied ________________?

   A. free expansion or friction resisted expansion/compression process should not be encountered
   B. when heat is being absorbed, temperature of hot source and working sub¬stance should be same
   C. when beat is being rejected, temperature of cold source and working sub-stance should be same
   D. all of the above
   E. none of the above

6. If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly_________________?

   A. temperature
   B. enthalpy
   C. internal energy
   D. entropy
   E. all of the above

7. In a non-flow reversible process for which p = (- 3V+ 15) x 105N/m2,V changes from 1 m to 2 m3. The work done will be about_______________?

   A. 100 xlOO5 joules
   B. lxlO5 joules
   C. 10 xlO5 joules
   D. 10 xlO5 kilo joules
   E. 10xl04kiojoules

8. Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant________________?

   A. pressure
   B. temperature
   C. volume
   D. internal energy
   E. entropy

9. Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant_______________?

   A. pressure
   B. temperature
   C. volume
   D. internal energy
   E. entropy

10. For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be___________________?

    A. zero
    B. minimum
    D. maximum
    D. infinity
    E. there is no such criterion