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MCQs

Total Questions : 1058 | Page 103 of 106 pages
Question 1021. Kinetic energy of the molecules in terms of absolute temperature (T) is proportional to
  1.    J
  2.    T
  3.    Vr
  4.    J²
 Discuss Question
Answer: Option B. -> T
Question 1022. The more effective way of increasing efficiency of Carnot engine is to
  1.    Decrease higher temperature
  2.    Increase higher temperature
  3.    Increase lower temperature
  4.    Decrease lower temperature
 Discuss Question
Answer: Option D. -> Decrease lower temperature
Question 1023. An adiabatic process is one in which
  1.    The change in internal energy is equal to the mechanical work done
  2.    The temperature of the gas changes
  3.    All of these
  4.    No heat enters or leaves the gas
 Discuss Question
Answer: Option C. -> All of these
Question 1024. The main cause for the irreversibility is
  1.    Heat transfer with a finite temperature difference
  2.    Mechanical and fluid friction
  3.    All of these
  4.    Unrestricted expansion
 Discuss Question
Answer: Option C. -> All of these
Question 1025. Intensive property of a system is one whose value
  1.    Depends on the mass of the system, like volume
  2.    Is dependent on the path followed and not on the state
  3.    Does not depend on the mass of the system, like temperature, pressure, etc.
  4.    Is not dependent on the path followed but on the state
 Discuss Question
Answer: Option C. -> Does not depend on the mass of the system, like temperature, pressure, etc.
Question 1026. The general law for the expansion or compression of gases, is
  1.    pvn = C
  2.    pv = C
  3.    pv = m R T
  4.    pvγ = C
 Discuss Question
Answer: Option A. -> pvn = C
Question 1027. A heat exchange process in which the product of pressure and volume remains constant is known as
  1.    Throttling process
  2.    Hyperbolic process
  3.    Isentropic process
  4.    Heat exchange process
 Discuss Question
Answer: Option B. -> Hyperbolic process
Question 1028. Specific heat of air at constant pressure is equal to
  1.    0.17
  2.    1
  3.    0.24
  4.    0.21
 Discuss Question
Answer: Option C. -> 0.24
Question 1029. The hyperbolic process is governed by
  1.    Charles' law
  2.    Boyle's law
  3.    Avogadro's law
  4.    Gay-Lussac law
 Discuss Question
Answer: Option B. -> Boyle's law
Question 1030. A cycle consisting of two isothermal and two isentropic processes, is known as
  1.    Stirling cycle
  2.    Joule cycle
  3.    Carnot cycle
  4.    Ericsson cycle
 Discuss Question
Answer: Option C. -> Carnot cycle

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