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2. Impact driver - Wikipedia

   en.wikipedia.org/wiki/Impact_driver

   A manual impact driver (for use with hammer) with screwdriver bits and adapters. An impact driver is a tool that delivers a strong, sudden rotational force and forward thrust. The force can be delivered either by striking with a hammer in the case of manual impact drivers, or mechanically in the case of powered impact drivers.

3. Impact wrench - Wikipedia

   en.wikipedia.org/wiki/Impact_wrench

   A 1/2" drive pistol-grip air impact wrench. An impact wrench (also known as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, windy gun) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it suddenly to the output shaft.

4. Power tool - Wikipedia

   en.wikipedia.org/wiki/Power_tool

   Worldwide, exposure to PM 2.5 contributed to 4.1 million deaths from heart disease, stroke, lung cancer, chronic lung disease, and respiratory infections in 2016. [8] Overall, ambient particulate matter is one of the leading risk factor for premature death globally. [9] Many construction tasks create dust. High dust levels are caused by one of ...

5. Brushless DC electric motor - Wikipedia

   en.wikipedia.org/wiki/Brushless_DC_electric_motor

   A brushless DC electric motor (BLDC), also known as an electronically commutated motor, is a synchronous motor using a direct current (DC) electric power supply. It uses an electronic controller to switch DC currents to the motor windings producing magnetic fields that effectively rotate in space and which the permanent magnet rotor follows.

6. Milwaukee Road class EP-3 - Wikipedia

   en.wikipedia.org/wiki/Milwaukee_Road_class_EP-3

   The Milwaukee Road's class EP-3 comprised ten electric locomotives built in 1919 by Baldwin and Westinghouse. They were nicknamed Quills because of their use of a quill drive . Although they were good haulers and well liked by engineers, poor design and constant mechanical problems plagued them for their entire lives and they were among the ...

7. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

8. Milwaukee Road class EF-1 - Wikipedia

   en.wikipedia.org/wiki/Milwaukee_Road_class_EF-1

   The Chicago, Milwaukee, St. Paul and Pacific Railroad (Milwaukee Road) classes EP-1 and EF-1 comprised 42 boxcab electric locomotives built by the American Locomotive Company (Alco) in 1915. Electrical components were from General Electric. The locomotives were composed of two half-units semi-permanently coupled back-to-back, and numbered as ...

9. Three-phase electric power - Wikipedia

   en.wikipedia.org/wiki/Three-phase_electric_power

   Three-phase transformer with four-wire output for 208Y/120 volt service: one wire for neutral, others for A, B and C phases. Three-phase electric power (abbreviated 3ϕ [1]) is a common type of alternating current (AC) used in electricity generation, transmission, and distribution. [2]