Clausius’ Theorem and the Inequality of Clausius MCQ

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• A heat engine receives 6 kW from a source at 250°C and rejects heat at 30°C with W. = 0 kW. Does this satisfy the inequality of Clausius?
  ক

  yes

  খ

  no

  গ

  cannot be said

  ঘ

  none of the mentioned
• If dQ is the heat supplied at T and dQ2 is the heat rejected at T2, then efficiency is given by
  ক

  1-(dQ2/dQ)

  খ

  1-(dQ/dQ2)

  গ

  (dQ/dQ2)-1

  ঘ

  (dQ2/dQ)-1
• If the cyclic integral of dQ/T is greater than zero then the cycle is
  ক

  irreversible but not possible

  খ

  irreversible but possible

  গ

  impossible

  ঘ

  reversible
• If the cyclic integral of dQ/T is less than zero then the cycle is
  ক

  irreversible but not possible

  খ

  irreversible and possible

  গ

  impossible

  ঘ

  reversible
• If the cyclic integral of dQ/T is zero then the cycle is
  ক

  irreversible but not possible

  খ

  irreversible but possible

  গ

  impossible

  ঘ

  reversible
• The cyclic integral of entropy is____
  ক

  one

  খ

  zero

  গ

  infinity

  ঘ

  cannot be determined
• The efficiency of a general cycle will be _____ the efficiency of a reversible cycle.
  ক

  equal to

  খ

  less than

  গ

  equal to or greater than

  ঘ

  equal to or less than
• Two reversible adiabatic paths can intersect each other.
  ক

  true

  খ

  false
• According to the Clausius’ theorem, the cyclic integral of ____ for a reversible cycle is zero.
  ক

  dW/dT

  খ

  dH/dT

  গ

  dQ/dT

  ঘ

  dE/dT
• Any reversible path can be substituted by a reversible zigzag path between the same states.
  ক

  true

  খ

  false