coldene47
Joined: 25 Jun 2013 Posts: 5
|
Posted: Tue Jun 25, 2013 12:31 pm Post subject: Explain Trolley Wheel |
|
|
A grooved metallic wheel or pulley carried on the end of a pole (trolley pole) by an electric car or locomotive, and held in contact with an overhead conductor, usually a suspended wire (trolley wire) from which it collects the current for the propulsion of the car or locomotive. _________________ trolley wheels |
|