PVy = constant, holds good for an isentropic process, which is_________________?

Related Mcqs:

1. Isentropic process means a constant _____________________ process ?

   A. Enthalpy
   B. Pressure
   C. Entropy
   D. None of these

2. The thermodynamic law, PVy = constant, is not applicable in case of______________?

   A. Ideal compression of air
   B. Free expansion of an ideal gas
   C. Adiabatic expansion of steam in a turbine
   D. Adiabatic compression of a perfect gas

3. An isentropic process is carried out at constant____________________?

   A. Volume
   B. Pressure
   C. Temperature
   D. All (A), B. and (C)

4. A solute distributes itself between two non-miscible solvents in contact with each other in such a way that, at a constant temperature, the ratio of its concentrations in two layers is constant, irrespective of its total amount”. This is_________________?

   A. The distribution law
   B. Followed from Margules equation
   C. A corollary of Henry’s law
   D. None of these

5. Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg. K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is_______________?

   A. Superheated vapour
   B. Partially condensed vapour with quality of 0.9
   C. Saturated vapour
   D. Partially condensed vapour with quality of 0.1

6. In case of a reversible process (following pvn = constant), work obtained for trebling the volume (v1 = 1 m3 and v23 m3) is maximum, when the value of ‘n’ is_________________?

   A. 0
   B. 1
   C. y = 1.44
   D. 1.66

7. Joule-Thomson effect i.e., a throttling process is a constant _____________ process?

   A. Entropy
   B. Temperature
   C. Internal energy
   D. Enthalpy

8. Isobaric process means a constant process ?

   A. Temperature
   B. Pressure
   C. Volume
   D. Entropy

9. In polytropic process (PVn = constant), if n = 1; it means a/an ______________ process?

   A. Adiabatic
   B. Reversible
   C. Isothermal
   D. None of these

10. Throttling (Joule-Thomson effect) process is a constant _____________ process?

    A. Enthalpy
    B. Entropy
    C. Pressure
    D. None of these