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:
The answer is dependent on the configuration of the parcel. An acre contains 43,560 square feet. ( 1 chain (22 Yards ) X 1 furlong (1/8 Mile)) For an example, if your parcel was only 1 foot wide it must be 43,560 feet long. Your answer would be 87,122 feet, However, if your parcel was square there would only be 844.8 feet with each side being 208.2 ft.