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Q: When will frictionless engine be 100 percent efficient?
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Why 100 percent heat not convert in mechanical work in engine?

No engine is 100% efficient: there is always some loss of energy between input and output.


What temperature is required to transfer waste heat to the environment for a heat engine to be a 100 percent efficient?

In order for a heat engine to be 100 percent efficient, the temperature of the cold reservoir where waste heat is transferred should be absolute zero (0 Kelvin). This is not achievable in practice, as it violates the second law of thermodynamics.


If an automobile had a 100 efficient engine would it exhaust the surroundings?

f an automobile had a 100 efficient engine would it exhaust the surroundings?


Are turbines 100 percent efficient?

Basically, almost NO physical process is 100% efficient.


Explain whether or not a heat engine could be made 100 percent efficient by eliminating friction?

No, eliminating friction alone won't make a heat engine 100% efficient. While reducing friction can improve efficiency, there will still be losses due to other factors like heat exchange with the surroundings. The second law of thermodynamics states that it is impossible to have a heat engine with 100% efficiency.


Explain why machines are not 100 percent efficient?

because they are not proper


Is a nuclear generator 100 percent efficient?

No, nuclear generators are not 100 percent efficient. They typically have an efficiency rate of around 30-40%, which means that 30-40% of the energy from the nuclear reactions is converted into electricity, while the rest is lost as heat.


What temperature is required to transfer waste heat to the environment for a heat engine to be 100 percent efficient?

A heat engine can never be 100% efficient due to the second law of thermodynamics, which states that some heat energy will always be lost to the surroundings. The temperature required for maximum efficiency is the temperature of the heat source for the engine. The efficiency of a heat engine is determined by the temperature difference between the heat source and the environment.


Why are no machines 100 percent efficient?

Some energy is lost to friction.


Why aren't machines 100 percent efficient?

becaus ethey have friction


Is anything 100 percent efficient?

The short answer is no. What you are talking about is sometimes referred to as a perfect machine. Because of friction and other factors, energy is always lost. The only example of 100% efficiency has been observed by the collisions of atoms in a supercollider, in which the atoms are broken down into a frictionless liquid. The frictionless liquid is at extreme temperature and is very short lived.


What is a device that uses heat to do work and but is not 100 percent efficient and expels excess heat?

A common device that fits this description is a combustion engine, such as those found in cars. These engines convert the heat generated from burning fuel into mechanical energy to do work, but they are not 100% efficient and expel excess heat through the exhaust system.