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…
High Pressure Mercury Vapour Lamp - Construction and Working: The extensive use of the mercury vapour lamp depends entirely upon the versatility of the mercury vapour as regards pressure, temperature,…
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…
Incandescent Lamp - Construction, Working and Advantages: For sometimes the arc lamps were used for general lighting purpose but as the carbon-arc lamps were complicated so these have been superseded…
Arc Lamp -Definition, Working Principle and Types: In an arc lamp electric current is made to flow through two electrodes in contact with each other which are drawn apart. The…
Power Sources for Welding Process: Both dc and ac are used for electric arc welding, each having its particular applications; in some cases either is suitable. The electric properties of…
Ultrasonic Welding Working Principle and Applications: Ultrasonic welding is a solid state welding process that produces coalescence of materials by the local application of high-frequency (20-60 kHz) vibratory energy as…
Submerged Arc Welding - Working, Advantages and Applications: Submerged Arc Welding - It is an arc welding process that uses an arc between a bare metal electrode and the weld…