Basics of Electricity Rates
Electricity pricing (sometimes referred to as electricity tariff or the price of electricity) varies widely from country to country, and may vary significantly from locality to locality within a particular…
Electrical Power Transmission And Distribution
Electricity distribution is the final stage in the delivery of electricity to end users.A distribution system’s network carries electricity from the transmission system and delivers it to consumers. Typically, the network would…
Basic Power Electronics Interview Questions
What is holding current in SCR? It is the minimum current required to hold the SCR in forward conduction state. When the forward current becomes less than holding current, SCR…
Types of IGBT
Insulated Gate Bipolar Junction Transistor (IGBTs) are normally classified into two types. They are namely (i) Non Punch Through IGBT (ii) Punch Through . These IGBTs are also referred to…
How a Level Switch Works
Liquid level switches detect liquid levels or interfaces between liquids such as oil and water, or liquid and solid interfaces. Liquid level switches are used in a number of liquid…
Silicon Carbide Lightning Arresters Working Principle
Silicon Carbide Arresters (SIC): The Non linear lightning arrester basically consists of set of spark gaps in series with the silicon carbide non linear resistor elements. Lightning arresters are connected…
Basics of Actuators
A valve actuator is a device that produces force to open or close the valve utilizing a power source. This source of power can be manual (hand, gear, chain-wheel, lever,…
Substation Interview Questions Answers
What are different insulators employed in substations? Some of the insulators employed in substations are: Pin insulators Post insulators Strain insulators Suspension insulators Hallow apparatus insulators Dead-end insulators Solid core…
Basic Electrical Engineering Interview Questions Answers
Define luminous flux It is defined as the total quantity of light energy emitted per second from a luminous body. It is represented by symbol F and is measured in…
Induction Motor Interview Questions & Answers
How does the Induction motor work? (OR) Why does the Rotor rotate? When the 3 phase stator windings are fed by 3 phase supply, a magnetic flux of constant magnitude…
