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MCQs

Total Questions : 1058 | Page 73 of 106 pages
Question 721. One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to
  1.    800 K
  2.    1200 K
  3.    1000 K
  4.    1400 K
 Discuss Question
Answer: Option A. -> 800 K
Question 722. One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.
  1.    11/4
  2.    9/7
  3.    4/7
  4.    All of the listed here
 Discuss Question
Answer: Option C. -> 4/7
Question 723. When wood is heated with a limited supply of air to a temperature not less than 280°C, the resulting fuel is
  1.    Coke
  2.    Wood charcoal
  3.    Briquetted coal
  4.    Bituminous coal
 Discuss Question
Answer: Option B. -> Wood charcoal
Question 724. Which of the following cycles is not a reversible cycle?
  1.    None of the listed here
  2.    Stirling
  3.    Ericsson
  4.    Carnot
 Discuss Question
Answer: Option A. -> None of the listed here
Question 725. In an extensive property of a thermodynamic system
  1.    None of the listed here
  2.    Extensive work is done
  3.    Extensive energy is utilized
  4.    Extensive heat is transferred
 Discuss Question
Answer: Option A. -> None of the listed here
Question 726. The area under the temperature-entropy curve (T – s curve) of any thermodynamic process represents
  1.    Heat rejected
  2.    Heat absorbed
  3.    Either heat absorbed or heat rejected
  4.    None of the listed here
 Discuss Question
Answer: Option C. -> Either heat absorbed or heat rejected
Question 727. The total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as
  1.    Law of degradation of energy
  2.    Law of equipartition of energy
  3.    Law of conservation of energy
  4.    None of the listed here
 Discuss Question
Answer: Option B. -> Law of equipartition of energy
Question 728. Isochoric process is one in which
  1.    All parameters remain constant
  2.    No mechanical work is done by the system
  3.    Very little mechanical work is done by the system
  4.    Free expansion takes place
 Discuss Question
Answer: Option B. -> No mechanical work is done by the system
Question 729. Kelvin Planck's law deals with
  1.    Conversion of heat into work
  2.    Conservation of work
  3.    Conservation of heat
  4.    Conversion of work into heat
 Discuss Question
Answer: Option A. -> Conversion of heat into work
Question 730. The isothermal and adiabatic processes are regarded as
  1.    Reversible process
  2.    Reversible or irreversible process
  3.    None of the listed here
  4.    Irreversible process
 Discuss Question
Answer: Option A. -> Reversible process

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