phase-sequence relay
51microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …
52NTSC — This article is about the television system. For the Indonesian government agency, see National Transportation Safety Committee. Television encoding systems by nation; countries using the NTSC system are shown in green. NTSC, named for the… …
53Cassini–Huygens — Artist s concept of Cassini s Saturn Orbit Insertion Operator NASA / ESA / ASI Mission type …
54OpenLDAP — Software Developer(s) The OpenLDAP Project Stable release 2.4.26 / June 30, 2011; 4 months ago (2011 06 30) …
55Central processing unit — CPU redirects here. For other uses, see CPU (disambiguation). An Intel 80486DX2 CPU from above An Intel 80486DX2 from below …
56Sport stacking — Sport Sport Stacking Founded 1985 Claim to Fame The Tonight Show with Johnny Carson …
57TXE — TXE, which stands for Telephone eXchange Electronic, was the designation given to a family of telephone exchanges developed by the British General Post Office (GPO), now BT, designed to replace the ageing Strowger systems. When World War II ended …
58Outline of chess — A game of chess, in the starting position. See also: Glossary of chess and Index of chess articles The following outline is provided as an overview of and topical guide to chess: Chess – two player board game played on a chessboard, a square …
59Mariner 2 — Operator NASA Major contractors Jet Propulsion Laboratory Mission type Flyby …
60Power system protection — is a branch of electrical power engineering that deals with the protection of electrical power systems from faults through the isolation of faulted parts from the rest of the electrical network. The objective of a protection scheme is to keep the …
