Overhead Equipment in Electric Traction Systems: Simplest type of overhead equipment in electric traction systems consists of a single contact wire supported either by bracket or by overhead span. The…
Automatic Block Signalling System in Railways: The purpose of automatic block signalling system in railways is to keep trains apart but permit spacing as close as safety permits. For optimum…
Factory Lighting in illumination - Fittings and Maintenance: Adequate factory lighting is of vital importance, as it provides improved amenities for the employees, increased production and has a definite economic…
Difference Between Tungsten Filament Lamps and Fluorescent Tubes: The Difference between tungsten filament lamps and fluorescent tubes is given in table below Sl No. Tungsten Filament Lamps Fluorescent Tubes 1…
Compact Fluorescent Lamp (CFL) - Working Principle, Types, Advantages and Disadvantages: A compact fluorescent lamp (CFL), also known as a compact fluorescent light or energy saving light, is a type…
Neon Lamp - Construction, Working, Advantages, Disadvantages and Applications: Neon lamp is a cold cathode lamp and consists of a glass bulb filled with neon gas with a small percentage…
Sodium Vapour Lamp - Construction, Working and Wiring Diagram: Principally the sodium vapour discharge lamp consists of a bulb containing a small amount of metallic sodium, neon gas, and two…
Gaseous Discharge Lamp - Working Principle and Types: Incandescent lamp suffers from two disadvantages—low efficiency and coloured light. The gaseous discharge lamp have been developed to overcome these drawbacks. The…