Real-world efficiencies are generally very high, in the 90 percent range and manufacturers will test products against the industry to determine efficiency which is rare.These tests to actually stand up against tests that reflect the real world.
Thus, the given statement is false.
What is  efficiency?
Efficiency is defined as measurable ability in order to avoid wasting materials, energy, efforts, money as well as time in performing or producing a desired result.
The system that contain oxygen or aerobic system starts producing energy during prolonged period of light to moderate function.
Gravity is an force of attraction that decreases with increasing mass of an object.
Therefore, real-world efficiencies are generally very high, in the 90 percent range and manufactures will test products against the industry to determine efficiency which is rare.
Hence, the statement given is false.
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