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प्रश्न
State Kelvin-Planck's statement of the second law of thermodynamics.
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उत्तर
Kelvin-Planck's statement: It is impossible to construct a heat engine that operates in a cycle, whose sole effect is to convert the heat completely into work. This implies that no heat engine in the universe can have 100% efficiency.
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संबंधित प्रश्न
A gas contained in a cylinder surrounded by a thick layer of insulating material is quickly compressed has there been a transfer of heat?
Answer in brief:
A gas contained in a cylinder surrounded by a thick layer of insulating material is quickly compressed has work been done?
Answer in brief.
What sets the limits on the efficiency of a heat engine?
The figure shows the V-T diagram for one cycle of a hypothetical heat engine which uses the ideal gas. Draw the p-V diagram diagram of the system.
What are the processes involves in a Carnot engine?
Explain in detail the Carnot heat engine.
Derive the expression for Carnot engine efficiency.
Let η1 is the efficiency of an engine at T1 = 447°C and T2 = 147°C while η2, is the efficiency at T1 = 947°C and T2 = 47°C. The ratio `eta_1/eta_2` will be ______.
The thermal efficiency of a heat engine is 25%. If in one cycle the heat absorbed from the hot reservoir is 50000 J, what is the heat rejected to the cold reservoir in one cycle?
Mention any two elements of a heat engine.
