Table of Contents
Why is the efficiency of Carnot engine always less than 1?
Because according to Second law of thermodynamics ( KELVIN- PLANK STATEMENT ) some part of input energy always goes into the sink i.e low temperature reservoir and gets wasted. ….. The efficiency of a real engine is always less than that of a Carnot engine.
Are Carnot engines 100\% efficient?
No real heat engine can do as well as the Carnot efficiency—an actual efficiency of about 0.7 of this maximum is usually the best that can be accomplished. But the ideal Carnot engine, like the drinking bird above, while a fascinating novelty, has zero power.
Can the efficiency of Carnot engine be 0 or 1?
Not only a Carnot engine, any energy converting machine or device cannot work with 100\% efficiency for all obvious reasons . any engine can not be 100\% efficient. so carnot engine’s efficiency can’t be 1 but less than 1 and that will be maximum for fixed temperature limits.
What is the efficiency of a Carnot engine?
The efficiency of carnot’s engine is 50\%.
Why efficiency is less than 100?
Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work). The output work is always less than the input work because some of the input work is used to overcome friction. Therefore, efficiency is always less than 100 percent.
What is the efficiency of Carnot engine?
Which of the following Carnot engines is the most efficient?
Hence the Carnot engine operating between 300 K and 0 K has the highest efficiency of 1. This implies that the engine will convert all the heat energy provided to it into doing work.
Why is Carnot engine most efficient?
According to the Carnot theorem, the reversible engine will always have a greater efficiency than the irreversible one. The Carnot cycle achieves maximum efficiency because all the heat is added to the working fluid at the maximum temperature.
Why is efficiency always less than one?
Since a machine does not contain a source of energy, nor can it store energy, from conservation of energy the power output of a machine can never be greater than its input, so the efficiency can never be greater than 1.