Engineering Thermodynamics
The door of a running refrigerator inside a room was left open. Which of the following statements is correct?

The temperature of the air in room will remain unaffected
The room will be gradually warmed up
The room will be cooled to the temperature inside the refrigerator
The room will be cooled very slightly

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Engineering Thermodynamics
Which is the incorrect statement about Carnot cycle?

It is used as the alternate standard of comparison of all heat engines
All the heat engines are based on Carnot cycle
All of these
It provides concept of maximising work output between the two temperature limits

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