The door of a running refrigerator inside a room was left open. Which of the following statements is correct?
A. The room will be cooled to the temperature inside the refrigerator
B. The room will be cooled very slightly
C. The room will be gradually warmed up
D. The temperature of the air in room will remain unaffected
Answer: Option C
This Question Belongs to Mechanical Engineering >> Engineering Thermodynamics
Addition of heat at constant pressure to a gas results in
A. Raising its temperature
B. Raising its pressure
C. Raising its volume
D. Raising its temperature and doing external work
Which of the following items is not a path function?
A. Heat
B. Work
C. Kinetic energy
D. Thermal conductivity
An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is
A. Feasible
B. Impossible
C. Possible
D. Possible, but with lot of sophistications
The absolute zero pressure can be attained at a temperature of
A. 0°C
B. -273°C
C. 273 K
D. None of these
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