Is the conversion of heat into mechanical energy reversible?

These device converts heat energy into mechanical energy- back to its original state by taking it through a reversible cyclic process. This cyclic process can operate by transferring some amount of the heat energy absorbed. Thus only a part of the heat energy absorbed is found to be convertible into mechanical energy.

Can heat be transferred completely into mechanical energy?

Complete conversion of mechanical energy into heat inevitably involves an increase in entropy and is thus fully allowed by the second law of thermodynamics, while complete conversion of heat into mechanical energy violates the second law. is so high due to the large temperature difference.

What is the transformation of heat into mechanical energy?

Devices used to convert thermal energy to mechanical energy are called heat engines. mechanism converting the kinetic energy of the moving working fluid into the work.

Can mechanical energy ever be transformed completely into heat or internal energy can the reverse happen?

The reverse is not possible. Heat cannot be transformed completely into mechanical energy. This is related to the second law of thermodynamics.

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.

When a reversible and irreversible engine is working between the same temperature limits then?

The correct answer is option 2 i.e., The reversible engine is greater than the irreversible engine. A reversible and an irreversible engine are working between the same limits of temperature. The efficiency of the reversible engine is greater than the irreversible engine.

What is an example of heat energy to mechanical energy?

Heat engines, such as the internal combustion engine used in cars, or the steam engine (Heat → Mechanical energy)

How does heat energy transform into mechanical energy give one specific example?

Steam engines convert thermal energy into mechanical energy in a train. Your body converts chemical energy from nutrients to mechanical energy for movement. A power drill converts electrical energy to mechanical energy when plugged in and used. Music converts sound energy to mechanical energy in your eardrum.

How can mechanical energy be converted to heat energy explain with an example?

Suppose, if we rub our palms they become warm. Due to rubbing our palms, the mechanical energy is converted into heat energy. Likewise, when two stones are rubbed sparks are produces. When a workman rotates the sharpening wheel with his leg and places the edge of a knife or scissor on the wheel to sharpen.

Is it possible to convert internal energy into mechanical energy explain with example?

Yes, For example, in explosion of a bomb, chemical energy (which is a form of internal energy) is converted into kinetic energy.

Why is heat engine not 100 efficient?

A heat engine is considered to be 100\% efficient if only all the heat is converted into useful work or mechanical energy. Since heat engines cannot convert all the heat energy into mechanical energy, their efficiency can never be 100\%.

What is the difference between reversible and irreversible process?

A reversible process is a change that can be retraced in a reverse (opposite) direction. An irreversible process is a change that cannot be retraced in a reverse (opposite) direction. Reversible changes are very slow and there is no loss of any energy in the process.