Which of the following is a reversible heat engine?

Explanation: Heat pump and refrigerator are the types of reversed heat engine. 6.

What is a reversible heat engine?

The reverse heat engine is a device that transfers energy from an object at a lower temperature to an object at a higher temperature by doing work on the system. … Refrigerators are reverse heat engines that pump energy out of the inside of the fridge and into the surrounding area by the way of an electric motor.

Is a heat engine a reversible process?

This cycle is still known as Carnot’s cycle, but because it is defined to be a reversible cycle, no heat engine can ever be made to operate using it.

What are five examples of a heat engine?

Everyday examples of heat engines include the thermal power station, internal combustion engine, firearms, refrigerators and heat pumps. Power stations are examples of heat engines run in a forward direction in which heat flows from a hot reservoir and flows into a cool reservoir to produce work as the desired product.

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What is reversible and irreversible heat engine?

1. The efficiency of an irreversible heat engine is always less than the efficiency of a reversible one operating between same two thermal reservoirs. … Since the engine R is reversible, it can be made to execute in the reverse order.

How Carnot engine is reversible?

The reversible Carnot cycle provides an upper limit for the heat engine. In the Carnot cycle, the greatest possible share of the heat produced by combustion is converted into work. The Carnot process consists of two isothermal and two isentropic steps.

Is refrigerator a reversible heat engine?

In one cycle, the working substance absorbs energy as heat from a hot reservoir at constant temperature Th, converts part of it into useful mechinical work and rejects the remaining as heat to a cold reservoir at constant temperature Tc<Th. … Hence, a refrigerator is said to be the reverse of a heat engine.

Which of the following is reversible process?

Isothermal compression is reversible, for example, Carnot cycle, heat engine.

Which of the process is reversible?

Some examples of reversible processes are uniform and slow expansion or compression of a fluid, such as fluid flows in a well-designed turbine, compressor, nozzle, or diffuser. Reversible processes is differentially removed from equilibrium with no (appreciable) internal temperature, pressure, and velocity changes.

What is reversible work?


The reversible work Wrev is defined as the maximum amount of useful work output or the minimum work input for a system undergoing a process between the specified initial and final states in a totally reversible manner. … It represents the energy that was supposed to be converted to work potential, but was not.

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What are types of heat engine?

Heat engines are categorized into two types as follows: external combustion engine and internal combustion engine.

Which is an example of heat engine?

Gasoline and diesel engines, jet engines, and steam turbines that generate electricity are all examples of heat engines.

Which of the following are types of heat engine?

The two types of heat engines are internal combustion engines and external combustion engines. Before we look into the classification of heat engines, let us understand what exactly is a heat engine. We know that a heat engine is used to produce mechanical energy by using heat energy as a source.

Is the Ericsson cycle reversible?

Ericsson Cycle was invented by Ericsson, which consists of two isothermal and two constant pressure processes. It is made thermodynamically reversible by the action of a regenerator.

Are refrigerators reversible?

It has the maximum efficiency for a given temperature limit. Since it is a reversible cycle, all four processes can be reversed. This will reverse the direction of heat and work interactions, therefore producing a refrigeration cycle.

Is fusion of ice reversible process?

This process is called melting and it is reversible. This is because when ice has turned to water after heating,when we place the same melted water and begin to freeze it,we will find that it is slowly being converted into ice. Hence,proving that melting of ice is a reversible process!