Which of the following exemplifies an adiabatic process ?

Related Mcqs:

1. On a P-V diagram of an ideal gas, suppose a reversible adiabatic line intersects a reversible isothermal line at point A. Then at a point A, the slope of the reversible adiabatic line (∂P/∂V)s and the slope of the reversible isothermal line (∂P/∂V)T are related as (where, y = Cp/Cv) ?

   A. (∂P/∂V)S = (∂P/∂V)T
   B. (∂P/∂V)S = [(∂P/∂V)T]Y
   C. (∂P/∂V)S = y(∂P/∂V)T
   D. (∂P/∂V)S = 1/y(∂P/∂V)T

2. Sound waves propagation in air exemplifies an ______________ process?

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

3. Disappearance of snow in subzero weather exemplifies the process of_________________?

   A. Evaporation
   B. Sublimation
   C. Vaporisation
   D. Melting

4. Which of the following is not correct for a reversible adiabatic process ?

   A. TVγ-1 = constant
   B. p1-γ.TY = constant
   C. PVγ = constant
   D. None of these

5. Work done in an adiabatic process between two states depends on the__________________?

   A. Rate of heat transmission
   B. Initial state only
   C. End states only
   D. None of these

6. Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is___________________?

   A. 300 × (32/7)
   B. 300 × (33/5)
   C. 300 × (333/7)
   D. 300 × (35/7)

7. The adiabatic throttling process of a perfect gas is one of constant enthalpy_________________?

   A. In which there is a temperature drop
   B. Which is exemplified by a non-steady flow expansion
   C. Which can be performed in a pipe with a constriction
   D. In which there is an increase in temperature

8. Entropy change in case of reversible adiabatic process is________________?

   A. Minimum
   B. Zero
   C. Maximum
   D. Indeterminate

9. What happens in a reversible adiabatic expansion process ?

   A. Heating takes place
   B. Cooling takes place
   C. Pressure is constant
   D. Temperature is constant

10. Specific heat of a gas for a reversible adiabatic process is________________?

    A. Negative
    B. Zero
    C. Infinity
    D. None of these