What is the most efficient machine ever created?

The bicycle
“The bicycle is the most efficient machine ever created. Converting calories into gas, a bicycle gets the equivalent of 3,000 miles per gallon.” —Bill Strickland Chart by Kirkpatrick Sale ranks energy efficiency from low end (mouse, plane, car) to supreme (human on bicycle).

What is the best efficiency of a machine?

100\%
A simple machine, such as a lever, pulley, or gear train, is “ideal” if the power input is equal to the power output of the device, which means there are no losses. In this case, the mechanical efficiency is 100\%.

Why is the efficiency of a real machine always less than 100 percent?

The percentage of the work input that becomes work output is the efficiency of a machine. Because there is always some friction, the efficiency of any machine is always less than 100 percent.

What according to you is the most efficient machine made by humans and why?

Additionally, of all machines the human heart is the most efficient, a two-cylinder pump which is most efficient at the time of its greatest stress. Most pumps when under increasing stress require increasing amounts of energy.

What are the efficiency of a machine?

The efficiency of a machine is equal to the ratio of its output (resistance multiplied by the distance it is moved) to its input (effort multiplied by the distance through which it is exerted); it is also equal to the ratio of the AMA to the IMA. This does not mean that low-efficiency machines are of limited use.

Is the bicycle really the most efficient machine that man ever invented?

It is claimed that the energy efficiency of a bicycle is the equivalent of the average car doing 1,600 miles on a gallon of petrol. Only the bicycle remains pure in heart.” Elizabeth West stated “When man invented the bicycle he reached the peak of his attainments.

Is any machine 100 efficient?

A machine cannot be 100 percent efficient because output of a machine is always less than input. A certain amount of work done on a machine is lost to overcome friction and to lift some moving parts of the machine.

Is there a machine that is 100 efficient?

No machine is free from the effects of gravity, and even with wonderful lubrication, friction always exists. The energy a machine produces is always less than the energy put into it (energy input). That is why 100\% efficiency in machines shall not be possible.

Can a machine be more than 100\% efficient?

Explanation: No machine is free from the effects of gravity, and even with wonderful lubrication, friction always exists. The energy a machine produces is always less than the energy put into it (energy input). That is why 100\% efficiency in machines shall not be possible.

Why is the efficiency of the machine less than one?

Since a machine does not contain a source of energy, nor can it store energy, from conservation of energy the power output of a machine can never be greater than its input, so the efficiency can never be greater than 1.

Are humans efficient machines?

Alas, our bodies are not 100\% efficient at converting food energy into mechanical output. But at about 25\% efficiency, we’re surprisingly good considering that most cars are around 20\%, and that an Iowa cornfield is only about 1.5\% efficient at converting incoming sunlight into chemical storage.

Can machines be 100\% efficient?