A thermodynamic system is taken from state A to B along ACB and is brought back to A along BDA as shown below in the P-V diagram. The net work done during the complete cycle is given by the area covered by_________________?

Related Mcqs:

1. An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to_________________?

   A. 12 P1V1
   B. 6 P1 V1
   C. 3 P1V1
   D. P1 V1

2. The chemical potential of a component (μi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by_________________?

   A. (∂E/∂ni)S, v, nj
   B. (∂G/∂ni)T, P, nj = (∂A/∂ni) T, v, nj
   C. (∂H/∂ni)S, P, nj
   D. All (A), B. and (C)

3. The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible _____________ process?

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

4. One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is_________________?

   A. 30554
   B. 10373
   C. 4988.4
   D. 4364.9

5. The shape of T-S diagram for Carnot Cycle is a__________________?

   A. Rectangle
   B. Rhombus
   C. Trapezoid
   D. Circle

6. A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively) ?

   A. Δ S1 is always Δ SR
   C. Δ S1 is always > Δ SR
   D. Δ S1 is always = Δ SR

7. Internal energy change of a system over one complete cycle in a cyclic process is__________________?

   A. Zero
   B. +ve
   C. -ve
   D. Dependent on the path

8. Maximum work that could be secured by expanding the gas over a given pressure range is the _____________ work?

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

9. Measurement of thermodynamic property of temperature is facilitated by ____________ law of thermodynamics?

   A. 1st
   B. Zeroth
   C. 3rd
   D. None of these

10. In case of a close thermodynamic system, there is ______________ across the boundaries?

    A. No heat and mass transfer
    B. No mass transfer but heat transfer
    C. Mass and energy transfer
    D. None of these