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प्रश्न
The efficiency of a heat engine working between the freezing point and boiling point of water is ____________.
विकल्प
6.25%
20%
26.8%
12.5%
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उत्तर
The efficiency of a heat engine working between the freezing point and boiling point of water is 26.8%.
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संबंधित प्रश्न
Answer in brief:
A gas contained in a cylinder surrounded by a thick layer of insulating material is quickly compressed has work been done?
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.
State Clausius form of the second law of thermodynamics.
Why does heat flow from a hot object to a cold object?
Derive the expression for Carnot engine efficiency.
Explain the second law of thermodynamics in terms of entropy.
Heat engine transfers ______.
A heat engine operates between a cold reservoir at temperature T2 = 400 K and a hot reservoir at temperature T1. It takes 300 J of heat from the hot re ervoir and delivers 240 J of heat to the cold reservoir in a cycle. The minimum temperature of the hot reservoir has to be ______ K.
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?
