# Question: What Is A Carnot Engine?

## What is meant by Carnot engine?

Carnot engine is a theoretical thermodynamic cycle proposed by Leonard Carnot. It gives the estimate of the maximum possible efficiency that a heat engine during the conversion process of heat into work and conversely, working between two reservoirs, can possess.

## What is the use of Carnot engine?

Carnot heat engine is a hypothetical heat engine designed based on Carnot cycle where heat delivered to a system is used to obtain useful mechanical work. Based on the Carnot cycle discussed above, the heat produced is used to mechanically move a piston which in turn is connected to a crank to produce the motion.

## What is Carnot engine explain its working?

A Carnot heat engine is a theoretical engine that operates on the Carnot cycle. The basic model for this engine was developed by Nicolas Léonard Sadi Carnot in 1824. In the process of going through this cycle, the system may perform work on its surroundings, thereby acting as a heat engine.

## What is the formula of Carnot engine?

W=QH−QC=(1−TCTH)QH. efficiency =WQH=1−TCTH. These temperatures are of course in degrees Kelvin, so for example the efficiency of a Carnot engine having a hot reservoir of boiling water and a cold reservoir ice cold water will be 1−(273/373)=0.27, just over a quarter of the heat energy is transformed into useful work.

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## Is Carnot engine real?

Any engine using the Carnot cycle, which uses only reversible processes (adiabatic and isothermal), is known as a Carnot engine. Any engine that uses the Carnot cycle enjoys the maximum theoretical efficiency.

## Is Carnot a cycle?

The Carnot heat-engine cycle described is a totally reversible cycle. Heat is absorbed from the low-temperature reservoir, heat is rejected to a high-temperature reservoir, and a work input is required to accomplish all this.

## Is Carnot engine 100 efficient?

Solution: η=1-T2T1 for 100% effeicency η=1 which gives T2=0K.

## Which gas is used in Carnot engine?

A diatomic ideal gas is used in a Carnot engine as the working substance. If during the adiabatic expansion part of the cycle the volume of the gas increase from V to 32V, the efficenecy of the engine is. Now, efficiency=1-T2T1=1-T24T2=1-14=34=0.75.

## Why is Carnot engine reversible?

The Carnot cycle is composed of four reversible processes. Hence, it is a reversible heat transfer process. Gas in the cylinder expands slowly, does work to its surroundings, and remains at a constant temperature TH. The total amount of heat transferred to the gas during this process is QH.

## What is Carnot cycle with diagram?

The Carnot cycle consists of the following four processes: A reversible isothermal gas expansion process. In this process, the ideal gas in the system absorbs qin amount heat from a heat source at a high temperature Thigh, expands and does work on surroundings.

T-S Diagram.

Process ΔT ΔS
IV Thigh−Tlow
Full Cycle

## Why can a Carnot engine not get 100% efficiency?

In order to achieve 100% efficiency (η=1), Q2 must be equal to 0 which means that all the heat form the source is converted to work. The temperature of sink means a negative temperature on the absolute scale at which the temperature is greater than unity.

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## Who invented Carnot engine?

Carnot cycle, in heat engines, ideal cyclical sequence of changes of pressures and temperatures of a fluid, such as a gas used in an engine, conceived early in the 19th century by the French engineer Sadi Carnot.

## What is Carnot engine class 11?

A Carnot engine is named after Carnot scientist. It is a reversible heat engine operating between two temperatures. It has a maximum efficiency which no other engine can have.