Section 1: Electrical interview questions and answers about switchgear and protection What are the functions of protective relays? To detect the fault and initiate the operation of the circuit breaker to isolate the defective element from the rest of the system, thereby protecting the system from damages consequent to the fault. Give the consequences of… Read More »
Electrical wiring in general refers to insulated conductor use to carry electricity and associated device. General aspects of electrical wiring are used to provide power in or to building and structure, commonly to as building wiring. Electrical wiring whether for residential, commercial or industrial project must be carefully installed and maintained in such a way… Read More »
Circuit breaker is a mechanical device designed to close or open contacts member thus closing or opening of an electrical circuit under normal or abnormal conditions. Circuit breakers are usually employed for the protection of electrical circuits, they are equipped with a trip coil connected to relay or other means. A circuit breaker is a… Read More »
Brushless motor also known as BLDC motor is a synchronous motor that gets power by a DC electric source. It uses an integrated inverter, which ultimately produces an AC electric signal to drive the motor. British scientist Michael Faraday first experimented with the idea of the electromagnetic induction motor in the early 1800’s. During that… Read More »
Graphene based nano materials have many potential applications in energy related areas, especially in the energy storage application. The following are the some of the reasons why graphene is useful in multiple ways. graphene improves both energy capacity and charge rate in batteries activated graphene makes superior super capacitors for energy storage graphene electrodes may… Read More »
Although magnesium battery is becoming less popular as compared to lithium batteries, still we need to understand the usage of magnesium batteries. In these type of batteries, anode is made up of magnesium because of its high standard potential. Magnesium is a light metal, easily available and having low cost. Magnesium/manganese dioxide (Mg/MnO2) battery has… Read More »