Examlex
Which of the following was the first known act of unconventional participation in America?
Commutators
A mechanical switch used in some electric motors and electrical generators to reverse the direction of current flow in the coils.
Hydrogen Atmosphere
An environment or a setting that predominantly contains hydrogen gas (H2).
Efficiency
The ratio of the useful output of a system to the input, expressed in percentage, indicating the system's ability to convert energy or resources into output effectively.
Cooling
The process of removing excess heat from a system to maintain optimal operating conditions, often critical in electrical and electronic systems to prevent overheating.
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