Thermodynamics MCQ with Answers

Thermodynamics MCQ with Answers

81) The heating and expanding of a gas is called thermodynamic system.

Answer is:

No

82) Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle

Answer is:

heat rejection is lower

83) Liquid fuels have higher calorific value than solid fuels.

Answer is:

Yes

84) The free expansion process is __________ non-flow process.

Answer is:

irreversible

85) A mixture of gas expands from 0.03 m³ to 0.06 m³ at a constant pressure of 1 MPa and absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is

Answer is:

54 kJ

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