Two Wire Sensor Working Principle and Animation
Sensors can also be broken down by their wiring configurations. The most common are 2-wire and 3-wire. Two-wire devices are designed to wire in series with the load. In a…
Short Circuit and Open Circuit
The Short-Circuit Consider a resistor whose value is zero ohms. An equivalent representation of such a resistance, called a short-circuit, is shown below: By Ohm’s Law: ( For short Circuit,…
Basics of Ohm’s Law
In 1827 the German physicist George Ohm published a pamphlet entitled “The Galvanic Circuit Investigated Mathematically”. It contained one of the first efforts to measure currents and voltages and to…
Circuit Elements and Types of Circuits
A circuit element is an idealised mathematical model of a two-terminal electrical device that is completely characterised by its voltage-current relationship. Although ideal circuit elements are not “off-the-shelf” circuit components,…
What is a PLC? – Programmable Logic Controller
A Programmable Logic Controller, also called a PLC or programmable controller, is a computer-type device used to control equipment in an industrial facility.
Digital Building Blocks – GATES
GATES are DIGITAL BUILDING BLOCKS. They are called DIGITAL because they operate on digital principles. They require a signal (also called a PULSE or INPUT) that is either 0v (LOW)…
Transformer Open and Short Circuit Tests
We conduct open circuit and short circuit test on single phase transformer to determine the efficiency and regulation of a transformer on any load condition and at any power factor.Open…
Electrical Machines Questions and Answers
Lap winding is suitable for high current and low voltage generators while wave winding is suitable for high voltage and low current generators. >Lap winding is suitable for high current…
Induction Motor Interview Questions Answers
What are the advantages and disadvantages of Induction Motors? Advantages: It is simple and rugged in construction It is relatively cheap Induction motors require less maintenance Induction motor has high…
Deluge Valve Operation
A Deluge system (automatic High Velocity Water Spray System) is a fixed fire protection system, which totally floods an area with pressurized water through a system of piping with open…
