Exam preparation MCQs with answers

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Latest MCQs

Air-refrigeration cycle________________?
  • (A)  Is the most efficient of all refrigeration cycles
  • (B)  Has very low efficiency
  • (C)  Requires relatively large quantities of air to achieve a significant amount of refrigeration
  • (D)  Both
Which one is true for a throttling process ?
  • (A)  A gas may have more than one inversion temperatures
  • (B)  The inversion temperature is different for different gases
  • (C)  The inversion temperature is same for all gases
  • (D)  The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity