Multiple Evaporators and Compressor System MCQ

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• What is the power required for the following arrangement?
  ক

  m1 (h2 – h11) + (m1 + m2) (h5 – h8) + (m1 + m2 + m3) (h8 – h7) / 60

  খ

  m1 (h2 – h1) + (m1 + m2) (h5 – h4) + (m1 + m2 + m3) (h8 – h7) / 60

  গ

  m1 (h2 – h1) + (m2 + m3) (h5 – h4) + (m1 + m2 + m3) (h8 – h7) / 60

  ঘ

  m1 h5 + m2 h5 + m3 h4 / (m1 + m2 + m3)
• What is the value of enthalpy when refrigerant enters the third compressor, i.e., point 7?
  ক

  m1 h2 + m2 h3 / (m1 + m2)

  খ

  m1 h11 + m2 h8 + m3 h5 / (m1 – m2 + m3)

  গ

  (m1 + m2) h5 + m3 h6 / (m1 + m2 + m3)

  ঘ

  m1 h5 + m2 h5 + m3 h4 / (m1 + m2 + m3)
• What is the value of enthalpy when refrigerant enters the second compressor, i.e., point 4?
  ক

  m1 h2 + m2 h3 / (m1 + m2)

  খ

  m1 h11 + m2 h8 + m3 h5 / (m1 – m2 + m3)

  গ

  m1 h2 + m2 h1 / (m1 + m2)

  ঘ

  m1 h5 + m2 h5 + m3 h4 / (m1 + m2 + m3)
• What is the value of total work done in the following arrangement?
  ক

  me1 (h2 – h1) + me2 (h4 – h3) + me3 (h4 – h5)

  খ

  me1 (h2 – h1) + me3 (h4 – h3) + me2 (h6 – h5)

  গ

  me1 (h2 – h1) + me3 (h4 – h3) + me3 (h6 – h5)

  ঘ

  m1 h5 + m2 h5 + m3 h4 / (m1 + m2 + m3)
• What is the value of total power required to run the following arrangement?
  ক

  m1 (h2 – h1) + m3 (h4 – h3) + m2 (h6 – h1)

  খ

  m1 (h2 – h1) + m2 (h4 – h3) + m3 (h6 – h5)

  গ

  m2 (h2 – h1) + m3 (h4 – h3) + m1 (h6 – h5) / 60

  ঘ

  m1 (h2 – h1) + m2 (h4 – h3) + m3 (h6 – h5) / 60
• What is the value of enthalpy when refrigerant enters the compressor, i.e., point 1?
  ক

  m1 h11 + m2 h8 + m3 h5 / (m1 + m2 – m3)

  খ

  m1 h11 + m2 h8 + m3 h5 / (m1 – m2 + m3)

  গ

  m1 h11 + m2 h8 + m3 h5 / (m1 + m2 + m3)

  ঘ

  m1 h5 + m2 h5 + m3 h4 / (m1 + m2 + m3)
• What is the value of C.O.P. in the following arrangement?
  ক

  (h1 – h4) / (h2 – h1)

  খ

  (h1 – h4) / (h4 – h1)

  গ

  (h1 – h2) / (h4 – h1)

  ঘ

  (h2 – h3) / (h2 – h1)
• What is the value of the refrigeration effect in the following arrangement?
  ক

  m1 – m2 – m3 (h2 – h1)

  খ

  m1 + m2 + m3 (h4 – h1)

  গ

  m1 + m2 + m3 (h1 – h4)

  ঘ

  m1 + m2 – m3 (h4 – h1)
• What is the value of work done in the following arrangement?
  ক

  m1 – m2 – m3 (h2 – h1)

  খ

  m1 + m2 + m3 (h2 – h1)

  গ

  m1 + m2 – m3 (h2 – h1)

  ঘ

  m1 + m2 + m3 (h4 – h1)
• What is the total mass of refrigerant flowing through the compressor if the masses flowing through each evaporator are m1, m2, and m3?
  ক

  m1 – m2 – m3

  খ

  m1 + m2 – m3

  গ

  m1 – m2 + m3

  ঘ

  m1 + m2 + m3
• What does process 4-1 represent?
  ক

  Evaporation

  খ

  Compression

  গ

  Condensation

  ঘ

  Expansion
• Which of the following system is used for maintaining at the same temperatures when food products kept in different compartments?
  ক

  Evaporator at the same temperature with a single compressor

  খ

  Evaporator at the same temperature with multiple compressors

  গ

  Evaporator at different temperature with a single compressor

  ঘ

  Evaporator at different temperature with multiple compressors
• Vegetables, Fruits, Frozen products can be maintained at the same temperatures and humidity.
  ক

  False

  খ

  True
• Multiple evaporator system is used to maintain different temperatures at different points.
  ক

  False

  খ

  True