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Mechanical Engineering :: Thermodynamics

  1. Which of the following is the correct statement?

  2. A.

    For a given compression ratio, both Otto and Diesel cycles have the same efficiency.

    B.

    For a given compression ratio, Otto cycle is more efficient than Diesel cycle.

    C.

    For a given compression ratio, Diesel cycle is more efficient than Otto cycle.

    D.

    The efficiency of Otto or Diessel cycle has nothing to do with compressioin ratio.

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  3. The temperature at which the volume of a gas becomes zero is called

  4. A.

    absolute scale of temperature

    B.

    absolute zero temperature

    C.

    absolute temperature

    D.

    none of these

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  5. The heating of gas at constant volume is governed by

  6. A.

    Boyle's law

    B.

    Charles' law

    C.

    Gay-Lussac law

    D.

    Avogadro's law

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  7. The absolute pressure of a given mass of a perfect gas varies inversely as its volume, when the temperature remains constant. This statement is known as Boyle's law.

  8. A.

    Yes

    B.

    No

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  9. The fuel mostly used in cement industry and in metallurgical processes is

  10. A.

    wood charcoal

    B.

    bituminous coke

    C.

    pulverised coal

    D.

    coke

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