221) It is __________ to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work.

possible

impossible

easy

none of these

Answer is:

impossible

Thermodynamics MCQ with Answers

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222) Which of the following is the correct statement?

All the reversible engines have the same efficiency.

All the reversible and irreversible engines have the same efficiency.

Irreversible engines have maximum efficiency.

All engines are designed as reversible in order to obtain maximum efficiency.

Answer is:

Irreversible engines have maximum efficiency.

223) A close cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.

same

lower

higher

none of these

Answer is:

higher

224) Charles' law states that all perfect gases change in volume by __________ of its original volume at 0 Degree Centigrade for every 1 Degree Centigrade change in temperature, when pressure remains constant.

1/27th

1/93th

1/173th

1/273th

Answer is:

1/273th

225) The calorific value of gaseous fuel is expressed in

kJ/kg

kJ/m²

kJ/m³

Answer is:

kJ/m³

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221) It is __________ to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work.

impossible

Thermodynamics MCQ with Answers

Related Thermodynamics MCQ with Answers

222) Which of the following is the correct statement?

Irreversible engines have maximum efficiency.

223) A close cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.

higher

224) Charles' law states that all perfect gases change in volume by __________ of its original volume at 0 Degree Centigrade for every 1 Degree Centigrade change in temperature, when pressure remains constant.

1/273th

225) The calorific value of gaseous fuel is expressed in

kJ/m3

Thermodynamics MCQ with Answers

kJ/m³