An adiabatic process is one in which
A. The temperature of the gas changes
B. No heat enters or leaves the gas
C. The change in internal energy is equal to the mechanical work done
D. All of the above
Answer: Option D
This Question Belongs to Mechanical Engineering >> Engineering Thermodynamics
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Comments ( 3 )
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
Since, dQ= dU+dW
Here dQ=0,then dU= -dW negative work done
Hence options (b) &(c) are correct
Answer B is correct
When there is not heat enters or leaves , then how temperature of the gas change