Kelvin-Planck’s law deals with
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Mechanical Engineering · all questionsEngineering Thermodynamics
Engineering Thermodynamics
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The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)
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A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227°C and 27°C. His claim is
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Characteristic gas constant of a gas is equal to
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The variables which control the physical properties of a perfect gas are
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According to Avogadro's Hypothesis
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The following cycle is used for air craft refrigeration
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In closed cycle gas turbine, the air is compressed
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A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is
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The amount of heat required to raise the temperature of __________ water through one degree is called kilojoules.
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The condition of perfect vacuum, i.e., absolute zero pressure can be attained at
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Work done in a free expansion process is
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Work-done in a free expansion process is
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The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is
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According to Gay Lussac’s law for a perfect gas, the absolute pressure of given mass varies directly as
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The heat and mechanical energies are mutually convertible. This statement was established by
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Mond gas is obtained by
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Producer gas is obtained by
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In open cycle gas turbine plants
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The atomic mass of sulphur is
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