Class Test - Elements Of Mechanical Engineering (Meci 101)

20 Questions | Total Attempts: 109

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Class Test - Elements Of Mechanical Engineering (Meci 101) - Quiz

1. All question carry equal marks 2. Don't waste time for single question.


Questions and Answers
  • 1. 
    For a process from state 1 to state 2, heat transfer in a reversible process is given by
    • A. 

      Q for reversible=(To)*(S1-S2)

    • B. 

      Q for reversible=(To)*(S2-S1)

    • C. 

      Q for reversible=(To)/(S1-S2)

    • D. 

      Q for reversible=(To)/(S2-S1)

  • 2. 
    Which of the following is true?
    • A. 

      Q for reversible > Q for irreversible and work for reversible < work for irreversible

    • B. 

      Q for reversible < Q for irreversible and work for reversible > work for irreversible

    • C. 

      Q for reversible < Q for irreversible and work for reversible < work for irreversible

    • D. 

      Q for reversible > Q for irreversible and work for reversible > work for irreversible

  • 3. 
    Which of the following is true for a steady flow system?
    • A. 

      Mass entering = mass leaving

    • B. 

      Mass does not enter or leave the system

    • C. 

      Mass entering can be more or less than the mass leaving

    • D. 

      None of the mentioned

  • 4. 
    The work done by a closed system in a reversible process is always ___ that done in an irreversible process.
    • A. 

      Less than or more than

    • B. 

      Equal to

    • C. 

      Less than

    • D. 

      More than

  • 5. 
    A piston-cylinder contains air at 600 kPa, 290 K and a volume of 0.01m^3. A constant pressure process gives 54 kJ of work out. Find the final volume of the air.
    • A. 

      0.05 m^3

    • B. 

      0.01 m^3

    • C. 

      0.10 m^3

    • D. 

      0.15 m^3

  • 6. 
    A piston-cylinder contains 0.5 kg of air at 500 kPa and 500 K. The air expands in a process so the pressure is linearly decreasing with volume to a final state of 100 kPa and 300 K. Find the work in the process.
    • A. 

      56.1 kJ

    • B. 

      66.1 kJ

    • C. 

      76.1 kJ

    • D. 

      86.1 kJ

  • 7. 
    When a body A is in thermal equilibrium with a body B, and also separately with a body C, then B and C will be in thermal equilibrium with each other.
    • A. 

      True

    • B. 

      False

  • 8. 
    What is the standard fixed point of thermometry?
    • A. 

      The ice point

    • B. 

      The steam point

    • C. 

      The triple point of water

    • D. 

      None of the mentioned

  • 9. 
    Which of the following is chosen as the standard thermometric substance?
    • A. 

      Gas

    • B. 

      Liquid

    • C. 

      Solid

    • D. 

      All of the mentioned

  • 10. 
    Work done by a system is taken to be
    • A. 

      Positive

    • B. 

      Negative

    • C. 

      Zero

    • D. 

      Varies according to situation

  • 11. 
    Work is a
    • A. 

      Point function

    • B. 

      Path function

    • C. 

      Depends on the state

    • D. 

      None of the mentioned

  • 12. 
    The differentials of point functions are
    • A. 

      Perfect differentials

    • B. 

      Exact differentials

    • C. 

      All of the mentioned

    • D. 

       none of the mentioned

  • 13. 
    Constant pressure process is also known as
    • A. 

      Isopiestic process

    • B. 

      Isobaric process

    • C. 

      All of the mentioned

    • D. 

      None of the mentioned

  • 14. 
    Work done in a quasi-static process
    • A. 

      Depends on the path followed

    • B. 

      Independent of the path followed

    • C. 

      Depends only on the initial and final states

    • D. 

      None of the mentioned

  • 15. 
    Shaft uses which kind of motion to do work?
    • A. 

      Vertical motion

    • B. 

      Horizontal motion

    • C. 

      Rotational motion

    • D. 

      None of the mentioned

  • 16. 
    Thermodynamic properties are
    • A. 

      Point function

    • B. 

      Path function

    • C. 

      Depends on the state

    • D. 

      None of the mentioned

  • 17. 
    Cyclic integral of a property is always
    • A. 

      Zero

    • B. 

      One

    • C. 

      Infinite value

    • D. 

      None of the mentioned

  • 18. 
    A real gas behaves as an ideal gas when?
    • A. 

      Temperature approaches zero

    • B. 

      Pressure approaches zero

    • C. 

      Both temperature and pressure approaches zero

    • D. 

      None of the mentioned

  • 19. 
    Heat is a
    • A. 

      Point function

    • B. 

      Path function

    • C. 

      Depends on the state

    • D. 

      None of the mentioned

  • 20. 
    Equation of continuity comes from
    • A. 

      Conservation of energy

    • B. 

      Conservation of mass

    • C. 

      Conservation of work

    • D. 

      Conservation of heat

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