Advertisements
Advertisements
प्रश्न
State Kelvin-Planck's statement of the second law of thermodynamics.
Advertisements
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.
APPEARS IN
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?
Draw a p-V diagram and explain the concept of positive and negative work. Give one example each.
The efficiency of a heat engine working between the freezing point and boiling point of water is ____________.
State Clausius form of the second law of thermodynamics.
What are the processes involves in a Carnot engine?
A Carnot engine whose efficiency is 45% takes heat from a source maintained at a temperature of 327°C. To have an engine of efficiency of 60% what must be the intake temperature for the same exhaust (sink) temperature?
For a heat engine operating between temperatures t1 °C and t2 °C, its efficiency will be ______.
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.
Which statement is incorrect?
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?
