Ohm’s law describes the amount of resistance the current has to face while it travels between two points. Definition: Ohm’s law states that the current through a conductor between two points is directly proportional to the voltage across the two points, given that...
Dioder is a semiconductor device with two terminals, typically allowing the flow of current in one direction only. Diodes allow current to flow when the anode is positive in relation to the cathode. It is sometimes useful to summarise the different...
Every Electrician has a pair of pliers in their house. But u will surprise that how many pliers exist and u are not aware of them. 1.Crimping Pliers These pliers have the fulcrum at the far end and are used...
Air Circuit Breaker (ACB) is an electrical device used to provide Overcurrent and short-circuit protection for electric circuits over 800 Amps to 10K Amps. These are usually used in low voltage applications below 450V. there are two types of air circuit breakers 1.Air-Break...
Fundamental difference is that Relay is a sensing device where as Circuit Breaker is a fault interrupting equipment. Relay is a protective device which senses the faulty conditions in a power system line and initiates the operation of circuit breaker to isolate...
As a general rule, construction of an induction motor consists essentially of two main parts : a) a stator and b) a rotor In rotor construction, there are two types of motors are coming.. Squirrel cage rotor motor Phase wound or...
Power transformers are used for transmission & receiving purpose, whereas distribution transformers are used only for distribution purpose. Power transformer voltage ratio varies b/w 756 kV to 11kV. Whereas the distribution transformer voltage ratio varies b/w 33kV to 430V. Power transformers...
DC motors are classified into shunt motor Series motor Compound motor The compound motor is again classified as Long shunt motor — in long shunt, the shunt field is parallel with both the armature winding and series winding. Short shunt motor-...
The figure shown explains the difference between AM & FM. A high-frequency carrier is used in both the modulation schemes. In AM, the amplitude of the carrier signal is modulated according to the varying amplitudes of the input signal (Black...
Aside from the fact that they have totally opposite effects on the current in a circuit, capacitors and inductors are two totally different but equally important components of modern electronics. An inductor is nothing more than a coil of wire, with...
Single phase and three phase are two forms of alternating current which involve a sinusoidally varying voltage or current. The single phase is used in a place where less power is required and for running the small loads. The three phases...
Current Transformer If the CT is under service the secondary of a C.T cannot be open circuited on any condition. The CT can be regarded as a series transformer. The current in the primary side of a C.T is independent of...
A current transformer is a device which produces an alternating current in its secondary which is proportional to the alternating current in its primary. A current transformer (C.T.) is used where the current is too high to measure directly, or the...
The universal motor is nothing but dc series motor. When dc motor is supplied with AC supply then torque generated is positive for both half cycles. Because during the negative half cycle, armature current reverses and flux also reverses so that...
Let’s start with this. There are three types of power. Apparent power (KVA), Reactive power or wattless power (KVAR) and Active power or useful power(KW). Let’s take an example of the motor. Electricity board provides us KVA. As we know we...
A power transformer is usually employed for the purpose of converting power, from one voltage to another. If it is used for converting power from a high voltage to a low voltage, it is called a step-down transformer. The conversion efficiency...
what is armature winding? The winding from which you will get the output will be termed as armature winding . and the other winding will be called a field winding. Let me explain How? In case of D.c machines, we say...
The lightning arrester protects the electrical equipment from lightning. It is placed very near to the equipment and when the lightning occurs the arrester diverts the high voltage wave of lightning to the ground. The selection of arrester depends on the...
There are main three categories of insulator that is used as an overhead insulator: Pin Insulator Suspension Insulator Strain Insulator Pin Insulator Pin Insulator is one the youngest overhead insulator, that has a capacity up to 33 KV system. It has one part,...
The motor is an electromechanical device, which consists of rotating conductors and magnetic field to transform electrical energy into mechanical torque. Whereas pump is a hydro-mechanical device that converts mechanical torque into hydraulic/pressure energy. Motoring action ( electric one ) obtained...
A DC motor works in the same principle as an AC motor, with a mechanism to allow it to rotate even if the supply is not alternating. After all, simple motors work because the direction of current reverses (alternates) every half cycle,...
A transformer is a device working on mutual inductance principle to convert electrical energy from one voltage/ current level to another. There are different types of transformers used for different purposes. (1) POWER TRANSFORMER Laminated core Transformer Toroidal Transformer Auto transformer Variable...
A contractor is an electromagnetic device which is used to make or break of an electrical circuit. there is two type of contractor. power contactor. auxiliary contactor. Power contactor is used in power circuit like switch on/off of a motor capacitor. while auxiliary contactor is used to switch on or off of a control circuit. a power contactor have 3 main contacts while an auxiliary contactor has many contacts like 1no+1nc 2no+2nc ect..power contactor...
Here is some Basic Electrical Terms Full Form that Every Engineering Should know this: 1. HT = High Tension (Transformer HT Side) 2. LT = Low Tension 3. AB Switch = Air Break Switch 4. DO Fuse = Drop Out Fuse...
There are so many differences between these two by feature and application, however, few of them are as below: 1- MCB(Miniature Circuit Breaker) is for basic protection device to limit the current and fault in a circuit whereas ELCB(Earth Leakage Circuit...
The stator is an unmoving component of an electrical machine that’s going around the rotor. It’s derived from the word ‘’stationary’’ as the ‘’stator’’ implies. It contains the windings and provides mechanical support and protection for the motor. ...
People walking one behind the other in a long chain are walking in Series. People walking side by side across a broad front are walking in Parallel. The same terminology applies to whatever it is that you are connecting up. You...
How inverters work. In this video, we take a look at how an inverter works to convert direct current (DC) into Alternating current (AC). Inverters are used increasingly throughout the industry as well as building services for HVAC systems to achieve...
In this video we learn how electricity works starting from the basics of the free electron in the atom, through conductors, voltage, current, resistors, led, to capacitors and transformers Read More: How Does Transformer WORKS...
Current-carrying capacity: tables (Extract from VDE 0298 T4 06/13 tables: 11, 17, 18, 21, 26 and 27) Current-carrying capacity, cables with a nominal voltage up to 1000 V and heat resistant cables VDE 0298 T4 08/03 table 11, column 2 and 5...
A true capacitor stores its energy in an electric field (akin to a magnetic field for a magnet). A battery cell stores its energy by creating a chemical that would happily decompose into a more stable chemical. If your question, though,...
A servo motor will rotate to an exact position, based on what it is being commanded to do. An example is the steering on a radio controlled car, where a servo is used to move the front wheels ‘to’ an exact...
In general way of common people’s understanding: These both words are used interchangeably by persons belonging to a different field than power electronics. They essentially mean to convey the functionality of the device (DC to variable freq AC) and as long...
Different Types of Sensors We live in a World of Sensors. You can find different types of Sensors in our homes, offices, cars etc. working to make our lives easier by turning on the lights by detecting our presence, adjusting the...
Let us come from basics. We call flow of charge is called current. And in order to create the flow, we need a force. That we are achieving the positive charge and negative charge. As positive charge and negative charge attract...
Neutral Vs Earth Neutral : Neutral is the normal ” return ” wire. In systems where the load is supplied from only one Hot (or “Live”) wire, the Neutral completes the circuit and carries current back from the load to the...
