Why is difficult to increase the efficiency of a machine?

Answer 1

cheese

Answer 2

As there are many types of losses in a machine & these losses reduces the efficiency of that machine, hence ideal machine can never be there.

For an ideal machine, its efficiency should be 100% i.e.

Output of the machine= Input of the machine.

But in practice, due to various losses & temperature effects, our output is always less than the input.

For non ideal machine, input= output + losses.

Answer 3

A machine cannot be perfectly efficient (able to convert 100% of input work into output work), since a machine experiences forces that draws energy away from the system, the most evident being friction. Frictional forces converts energy into heat which escapes to the surrounding and cannot be captured to do work; thus, it is considered "lost" energy. Though the energy is not lost, it is converted into unusable forms, which adds to the entropy of the universe (by the 2nd law of Thermodynamics, which states that entropy of the universe always increases). Therefore, the machine cannot output all of the energy that was inputted to do work, it will always lose some energy to the surrounding.

Answer 4

No machine is 100 percent efficient because energy is always lost due to heat or friction.

Answer 5

A machine cannot be 100 percent efficient because of energy lost to friction. Friction affects large scale machine and also exists at the electron level.

Answer 6

because it will be just like fossil fuels the energy will be used up to quick, (this is obvious, only this part is by ife)