normally energised
1NE — • Normally energised …
2NDE — • Normally de energised …
3Automatic Warning System — The Automatic Warning System (AWS) is a form of limited cab signalling and train protection system introduced in 1956 in the United Kingdom to help train drivers observe and obey signals. It was based on a 1930 system developed by Alfred Ernest… …
4Mechanical filter — Figure 1. A mechanical filter made by the Kokusai Electric Company intended for selecting the narrow 2 kHz bandwidth signals in SSB radio receivers. It operates at 455 kHz, a common IF for these receivers, and is dimensioned 45×15×15 mm ( …
5Rhodesian Light Infantry — Infobox Military Unit unit name=Rhodesian Light Infantry caption=Cap badge of the Rhodesian Light Infantry. The Queen s crown indicates that it is pre 1970 pattern. country=Rhodesia allegiance=Republic of Rhodesia type=Airborne Commando… …
6Pyroclastic flow — Pyroclastic flows sweep down the flanks of Mayon Volcano, Philippines, in 1984 …
7Manchester-Sheffield-Wath electric railway — The Manchester Sheffield Wath electric railway was an early electrification scheme on British railways. The route featured long ascents on both sides of the Pennines with the long Woodhead Tunnel at its central summit close to the Woodhead pass.… …
8Manchester–Sheffield–Wath electric railway — [v · d · …
9Overhead lines — This article is about the transmission of electrical power to road and rail vehicles. For transmission of bulk electrical power to general consumers, see Electric power transmission. For powerlines mounted on pylons, see overhead power line.… …
10Washing machine — This article is about the laundry cleaning apparatus. For the Sonic Youth album, see Washing Machine (album). A typical modern front loading washing machine Irreler Bauerntradition shows an early Miele was …
