Work done in a free expansion process is___________________?

Related Mcqs:

1. In a free expansion process___________________?

   A. work done is zero
   B. heat transfer is zero
   C. both A. and B. above
   D. work done is zero but heat increases
   E. work done is zero but heat decreases

2. 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

3. A gas is compressed in a cylinder by a movable piston to a volume one-half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be___________________?

   A. 300 Nm
   B. 300,000 Nm
   C. 30 Nm
   D. 3000 Nm
   E. 30,000 Nm

4. Work done in an adiabatic process between a given pair of end states depends on__________________?

   A. the end states only
   B. particular adiabatic process
   C. the value of index n
   D. the value of heattransferred
   E. mass of the system

5. Work done is zero for the following process_________________?

   A. constant volume
   B. free expansion
   C. throttling
   D. all Of the above
   E. none of the above

6. If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to__________________?

   A. + v
   B. – ve
   C. zero
   D. pressure x volume
   E. any where between zero and infinity

7. If value of n is infinitely large in a polytropic process pV” = C, then the process is known as constant_____________________?

   A. volume
   B. pressure
   C. temperature
   D. enthalpy
   E. entropy

8. An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is___________________?

   A. feasible
   B. impossible
   C. possible
   D. possible, but with lot of sophistications
   E. desirable

9. A perpetual motion machine is___________________?

   A. a thermodynamic machine
   B. a non-thermodynamic machine
   C. a hypothetical machine
   D. a hypothetical machine whose opera-tion would violate the laws of thermodynamics
   E. an inefficient machine

10. The unit’of universal gas constant is___________________?

    A. watts/°K
    B. dynes/°C
    C. ergscm/°K
    D. erg/°K
    E. none of the above