Thermodynamics - Mechanical Engineering Questions and Answers

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The oxygen atom is __________ times heavier than the hydrogen atom.

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When the gas is cooled at constant pressure,

its temperature increases but volume decreases

its volume increases but temperature decreases

both temperature and volume increases

both temperature and volume decreases

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The work ratio of a gas turbine plant is given by

\(\frac { Net work output } { Workdone by the turbine }\)

\(\frac {Net work output} { Heat supplied }\)

\(\frac { Actual temperature drop } { Isentropic temperature drop }\)

\(\frac {Isentropic increase in temperature} { Actual increase in temperature}\)

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As per Charles' law, the volume of a given mass of a perfect gas varies __________ as its absolute temperature, when the absolute pressure remains constant.

directly

indirectly