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The answers of the multiple choices questions are highlighted by bold later.
The answers of fundamental of thermodynamics are covered in two parts 1 and part 2
Q.21. Determine the reversible power in the following diagram.
A. 320 KW
B. 375 KW
C. 180 KW
D. None of the above
Q.22. A closed system shown in the figure undergoes change in state 1 to state 2. The path followed by the system is
A. Isothermal compression
B. isochoric expansion
C. Isothermal expansion
D. None of the above
Q.23. The label 'K' in the following I.C Engine indicates
A. Open system
B. Closed system
C. Isolated system
D. Adiabatic system
Q.24. For a closed system shown in following figure which statement is c
A. System undergoes mechanical equilibrium
B. System undergoes thermal equilibrium
C. System undergoes chemical equilibrium
D. System undergoes thermodynamic equilibrium
Q.25. The fig. Shows the turbojet engine can be identified as
A. Closed system
B. Open system
C. Isolated system
D. Adiabatic system
Q.26. The process shown in the figure is,
A. Irreversible
B. Reversible
C. Impossible
D. None of the above
Q.27. The fig. Shows the turbojet engine can be identified as
A. Closed system
B. Open System
C. Isolated system
D. Adiabatic
Q.28. Process shown in the following figure from (a) to (c) is
A. Phase changes process from gaseous to liquid to solid
B. Phase changes process from solid to liquid to gaseous
C. Sensible heating
D. None of the above
system
Q.29. The Wnet of the heat pump in the following figure would
A. 4.62 kW
B. 3.32 kW
C. 3.5 kW
D. 4.32 kW
Q.30. For following figure what will be value of ΔE
A. 15 kJ
B. 18 kJ
C. 6 kJ
D. 3 kJ
Q.31. The Wnet of the heat engine in the following figure wo
A. 30 MW
B. 18 kW
C. 80 MW
D. 50KW
Q.32. During a steady-flow process, fluid properties
A. May change with position but not with time.
B. May change with time but not with position.
C. May change with both time and position.
D. All of the above
A. Chemical equilibrium.
B. Thermodynamics equilibrium.
C. Thermal equilibrium.
D. Mechanical equilibrium
Q.34. A Fig. rigid tank contains a hot fluid that is cooled while being stirred by a paddle wheel. Determine the final internal energy of the fluid. Neglect the energy stored in the paddle wheel.
A. 500 KJ
B. 400 KJ
C. 450 KJ
D. None of the above
Q.35. The given figure is type of
A. Open system
B. Closed system
C. Isolated system
D. None of the above
Q.36. The following figure of an closed box indicates an
A. Isolated system
B. Both A & C
C. Adiabatic system
D. Closed system
Q.37. Phase in figure (b) is
A. Solid
B. Liquid
C. Gaseous
D. None of the above
Q.38. Based on the figure below the absolute vacuum gauge pressure is always
A. -1.01325 bar
B. Zero
C. Negative
D. None of the above
Q.39. When the gas enclosed the piston shown in the figure receives 1930 J of heat ,Q, From its surrounding .It performs 2250 J of work in raising the piston .what is the change in the internal energy of the gas
A. -4180J
B. +320J
C. -320J
D. +4180J
Q.40. For the process shown in the figure.ΔE will be equal to
A. Qnet
B. Wnet
C. Zero
D. None of the above
Q.41. The work done in the following figure for the displacement ds is represented by (F=Force,P=Pressure, ds= Displacement, A-Piston area).
A. P/dV
B. PA/ds
C. Fds
D. All of the above
Q.42. Area dA represents,
A. Work transfer
B. Heat Transfer
C. Entropy Transfer
D. None of the above
Q.43. In the following figure what would be the change in the total energy of the volume (at the end of the cycle ) of the system is
A. Zero
B. Equal to heat Transfer
C. Maximum
D. Difference in enthalpy of the system
Q.44. The system shown in the sketch is
A. A non uniform system
B. A Uniform system
C. An Unsteady state system
D. Steady state system
Q.45. In a cyclic process, the heat transfer ae +14.7 KJ,-25.2KJ, -3.56 KJ and +31.5KJ. What is the net work for this cyclic process?
A. 20 KJ
B. 25 KJ
C. 17.44 KJ
D. None of the above
Q.46. The Efficiency of the following electric cooker would be 5KW is the heat lost to the surrounding.
A. 0.25
B. 0.4
C. 0.6
D. 1.67
Q.47. The Figure validates for
A. First law of thermodynamics
B. Second law of thermodynamics
C. Zeroth law of thermodynamics
D. None of the above
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