Technical articles on Electronics and Electrical Engineering topics focused on Basics of EE, Electronic components, power systems and equipment used for generation, transmission, operation, and controls of electricity.
Switchgear can be classified into two varieties: metal enclosed and metal clad. Metal Clad Switchgear Metal enclosed Switchgear More robust design Not robust like metal clad Requires shutters between the bus and the front of the equipment Doesn’t require shutters between the bus and the front of the equipment Compartmentalization of live parts exists No … Read more
Mutual GMD an abbreviation for mutual geometrical mean distance is the geometrical mean of the distances form one conductor to the other. As evident there must be between the largest and smallest such distance. Mutual-GMD simply indicates the equivalent geometrical spacing. There are three important causes of interests in reference to mutual GMD that are … Read more
Self-geometrical mean distance abbreviated as self-GMD plays vital role in simplifying the inductance calculations in the case of multiconductor arrangements in transmission lines. Symbol D with subscript s is used to denote self-GMD (Ds). The mathematical equation for inductance per conductor per metre is: Inductance per conductor per meter = 2 * 10-7 * (1/4) … Read more
A synchronous condenser is an over-excited synchronous motor that is running on no load condition. A synchronous motor takes a leading current when run over-excited and, as a result behaves as a capacitor. When such a motor is connected in parallel with the power supply, it takes a leading current which partly neutralizes the lagging … Read more
The surge tank is one of the hydraulic structures in a hydro-electric power. A Surge tank is a water storage device that is used as a pressure neutralizer in hydropower water conveyance systems. Its primary purpose is to dampen excess pressure variance. Also see: 5 Types of Electrical Equipment at Hydro Power Plants In a … Read more
Electrical Engineering Multiple Choice – Electrical Measurement Ampere is a Correct answer: 1. Base unit Also see: Basic Voltage and Current MCQs Also see: Basic Electrical Properties and their Units
Electrical Engineering Multiple Choice – Electrical Measurement An oscilloscope indicates Correct answer: 3. Peak to peak value of voltage See below: What is an Oscilloscope
Visual critical voltage is defined as the minimum phase-neutral voltage at which corona glow appears all along the line conductors. the corona glow does not begin at the disruptive voltage Vc, rather it occurs at a higher voltage called visual critical voltage. Visual critical voltage is abbreviated using Vv. The phase-neutral effective value of visual … Read more
The phenomenon of violet glow, and hissing noise accompanied by the production of ozone gas in an overhead transmission line is known as the corona effect. Corona effect also known as corona discharge is an electrical discharge that is caused due to ionization of a fluid such as air surrounding a conductor carrying a high … Read more
Electrical power distribution comprises feeders, distributors, and service mains. Feeders The feeder is the electrical conductor that connects the sub-station to the area where power is to be distributed. The current in a feeder remains same since, no tappings are taken from the feeder. While designing a feeder the main consideration is the current carrying … Read more