# Question: Which gas is used in Carnot engine

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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.

## What is the working substance in Carnot engine?

24.2 The Carnot Cycle

Consider a system composed of an ideal gas confined in a cylinder fitted with a piston (Figure 24.4), The ideal gas is the working substance; the piston and cylinder walls are its environment. The gas can exchange heat with its surroundings via conduction through the walls of the cylinder.

## What is sink and source in Carnot engine?

A Carnot Engine is reversible and runs in a cycle, with all of its heat exchanges taking place at a source temperature and a sink temperature.

## What is Carnot engine What is its efficiency?

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.

## Who invented Carnot engine?

Sadi Carnot, in full Nicolas-léonard-sadi Carnot, (born June 1, 1796, Paris, Fr. —died Aug. 24, 1832, Paris), French scientist who described the Carnot cycle, relating to the theory of heat engines.

## Is Carnot engine 100 efficient?

Solution : η=1-T2T1 for 100% effeicency η=1 which gives T2=0K. Heat is supplied to a diatomic gas at constant pressure.

## Is Carnot engine real?

The Carnot cycle is a theoretical cycle that is the most efficient cyclical process possible. 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.

## Why is a Carnot engine Impossible?

The Carnot cycle can be thought of as the most efficient heat engine cycle allowed by physical laws. … It is not a practical engine cycle because the heat transfer into the engine in the isothermal process is too slow to be of practical value.

## Why Carnot engine is 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.

## 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.

## What is the Carnot principle?

Carnot’s theorem, developed in 1824 by Nicolas Léonard Sadi Carnot, also called Carnot’s rule, is a principle that specifies limits on the maximum efficiency any heat engine can obtain. The efficiency of a Carnot engine depends solely on the temperatures of the hot and cold reservoirs.

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## What is S in TS diagram?

A temperature–entropy diagram, or T–s diagram, is a thermodynamic diagram used in thermodynamics to visualize changes to temperature and specific entropy during a thermodynamic process or cycle as the graph of a curve. … Working fluids are often categorized on the basis of the shape of their T–s diagram.

## What are the four steps in Carnot engine?

7.3. The four stages in the Carnot cycle. (A) Stage 1: Isothermal expansion under heat input Q1, (B) Stage 2: Adiabatic expansion accompanied by a fall in temperature T1 to T2, (C) Stage 3: Isothermal compression, Q2 exhausted, (D) Stage 4: Adiabatic compression accompanied by an increase in temperature T2 to T1.

## Is Carnot engine a heat engine?

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.

## Who is father of thermodynamics?

With his multiple scientific contributions… Nicolas Léonard Sadi Carnot is often described as the “Father of Thermodynamics.”

## Where is Carnot cycle used?

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. It is used as a standard of performance of all heat engines operating between a high and a low temperature.