The absolute zero pressure will be
A. When molecular momentum of the system becomes zero
B. At sea level
C. At the temperature of - 273 K
D. At the center of the earth
Answer: Option A
This Question Belongs to Mechanical Engineering >> Engineering Thermodynamics
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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
In thermodynamics and fluid mechanics, absolute pressure is measured relative to a perfect vacuum (zero pressure). So, absolute zero pressure means a perfect vacuum — no molecules, no collisions, no force exerted on container walls.
This occurs when there are no gas molecules present, or when molecular motion ceases completely — which theoretically happens at absolute zero temperature (0 K)
How?