The DC motor was the mainstay of electric traction drives on both electric and diesel-electric locomotives, street-cars/trams and diesel electric drilling rigs for many years. The introduction of DC motors and an electrical grid system to run machinery starting in the 1870s started a new second Industrial Revolution.
One acre is 43,560 sq ft. One half acre is 21,780 sq ft. However, that doesn't help most people much when trying to picture how large a lot is. Half acre lot is roughly:
Confidence votes 16.3K. 0.5 acres is 21780 square feet. There are 21780 square feet in a half acre. 0.5 acres is 21780 square feet. There are 21780 square feet in a half acre.