Cascade Systems MCQ

Test your knowledge with important Cascade Systems MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Cascade Systems MCQs at Bissoy

• What is the value of pressure ratio if the pressure at point 1 and 2 is 1.809 and 3.467 bar, respectively?
  ক

  1.916

  খ

  1.916 bar

  গ

  0.521

  ঘ

  0.521 bar
• What is the value of C.O.P. of high-temperature cascade system in terms of intermediate temperature in the following diagram? If TEL and TCL = Evaporator and condenser temperatures for low-temperature cascade system TEH and TCH = Evaporator and condenser temperatures for high-temperature cascade system
  ক

  TEH / TCH – TCH

  খ

  TI / TCH – TI

  গ

  TCH / TI – TCH

  ঘ

  TEH / TI – TCH
• What is the value of C.O.P. of low-temperature cascade system in terms of intermediate temperature in the following diagram? If TEL and TCL = Evaporator and condenser temperatures for low-temperature cascade system TEH and TCH = Evaporator and condenser temperatures for high-temperature cascade system
  ক

  TEL / TCL – TCL

  খ

  TCL / TCL – TEL

  গ

  TCL / TI – TCL

  ঘ

  TEL / TI – TCL
• What is the value of power required to drive the systems in the following diagram?
  ক

  m1 (h2 – h4) + m2 (h5 – h6) kW

  খ

  m1 (h2 – h1) + m2 (h8 – h1) kJ/s

  গ

  m1 (h2 – h1) + m2 (h6 – h5) kW

  ঘ

  m1 (h2 – h1) + m2 (h6 – h5) kJ/min
• What is the value of C.O.P. in the following diagram?
  ক

  210 Q / m1 (h2 – h4) + m2 (h5 – h6)

  খ

  210 Q / m1 (h2 – h7) + m2 (h6 – h8)

  গ

  210 Q / m1 (h2 – h8) + m2 (h5 – h8)

  ঘ

  210 Q / m1 (h2 – h1) + m2 (h6 – h5)
• What is the value of work done in the following diagram?
  ক

  m1 (h2 – h4) + m2 (h5 – h6)

  খ

  m1 (h2 – h1) + m2 (h6 – h5)

  গ

  m1 (h2 – h8) + m2 (h5 – h8)

  ঘ

  m1 (h2 – h5) + m2 (h4 – h8)
• What is the value of m2 / m1 in the following diagram?
  ক

  (h2 – h4) / (h5 – h8)

  খ

  (h6 – h4) / (h7 – h8)

  গ

  (h1 – h4) / (h6 – h8)

  ঘ

  (h2 – h1) / (h1 – h8)
• What is the value of m1 in the following diagram?
  ক

  210 Q / (h1 – h7) kg/min

  খ

  210 Q / (h1 – h4) kg/s

  গ

  210 Q / (h1 – h4) kg/min

  ঘ

  210 Q / (h1 – h7) kg/s
• Cascade refrigeration system reduces the C.O.P.
  ক

  True

  খ

  False
• Multiple refrigerants can be used in the cascade refrigeration system.
  ক

  True

  খ

  False
• What is Intermediate temperature?
  ক

  Temperature overlap is zero

  খ

  Temperature overlap is infinity

  গ

  The temperature of the low-temperature cascade system

  ঘ

  The temperature of the high-temperature cascade system
• The difference between low-temperature cascade condenser temperature and high-temperature cascade evaporator temperature is called temperature ______
  ক

  subtraction

  খ

  overview

  গ

  overlap

  ঘ

  gradient
• Which intermediate refrigerants were used for the first time in the cascade system?
  ক

  CO2 and CO

  খ

  CO and SO2

  গ

  NH3 and CO2

  ঘ

  CO2 and SO2
• What does low boiling refrigerants ensure?
  ক

  Lower C.O.P.

  খ

  Higher C.O.P.

  গ

  Lower pressure

  ঘ

  Larger compressor displacement
• Low-temperature cascade system use refrigerants with ______ boiling temperature and high temperature cascade system use refrigerants with _________ boiling temperature.
  ক

  low, high

  খ

  high, low

  গ

  low, low

  ঘ

  high, high
• How is a cascade system structured?
  ক

  VCR system in parallel combination

  খ

  VCR system is not used

  গ

  VCR system in a series combination

  ঘ

  VAR system is used
• What is the principal advantage of the cascade system?
  ক

  Increase of work done

  খ

  Decrease the refrigeration effect

  গ

  Use of only one refrigerant

  ঘ

  Use of multiple refrigerants
• What is Cryogenics?
  ক

  C.O.P. reduction

  খ

  Low-temperature refrigeration

  গ

  Work enhancement

  ঘ

  High-temperature refrigeration
• Why is the cascade system used?
  ক

  To attain low C.O.P.

  খ

  To decrease the refrigeration effect

  গ

  To produce low temperatures

  ঘ

  To increase leakage loss