In a recent year, wind machines in a country generated 185.1 billion kWh of electricity, enough to serve more than 16 million households. The nation's total electricity production that year was 4,098 billion kWh. What percentage of the total energy production was generated by wind machines? Round to the nearest tenth of a percent.

unlike the threaded fasteners which are used to clamp the machine members, power screws are used to transmit power. common applications of power screws are: screw jacks: to lift weight. lead screw of lathe: for axial movement of tool and its precise positioning.

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