What is Relay? A relay is a device that opens and closes an auxiliary circuit under predetermined conditions in the main circuit. Relays are extensively used in electrical, electronics engineering, and many other fields. There are relays that are sensitive to conditions of current, voltage, temperature, frequency, or some other combination of these conditions. … Read more
Single Phase Induction Motor A single-phase induction motor in its physical appearance is similar to a three-phase squirrel cage induction motor. The 1-Φ phase induction motor has a distributed single-phase winding while in the case of the 3-Φ induction motor the stator has distributed three-phase windings. On comparing the performance characteristics of the single-phase induction … Read more
WHAT IS SEMICONDUCTOR? A semiconductor is defined as a substance whose electrical conductivity is intermediate between metallic conductors and non-metallic insulators. In other words, we can also define semiconductor as the substance which has resistivity (10-4 to 0.5 Ωm) in between metallic conductors and non-metallic insulators. Examples of semiconductors are germanium, silicon, selenium, etc. Properties … Read more
MAXIMUM POWER TRANSFER THEOREM The Maximum Power Transfer theorem is one of the useful methods in circuit analysis to find the value of load resistance when there would be the maximum transfer of power from the source to load. Statement of Maximum Power Transfer Theorem According to this theorem, a resistive load that is being … Read more
Zener Diode as a Voltage Regulator Zener Diode A Zener diode is a P-N junction diode that is specially designed for operation in the breakdown region in reverse bias conditions. Zener Diode sometimes also called the breakdown diode as it is used to take advantage of its sharply defined breakdown voltage when operated in … Read more
What is a fuse? Let’s start with the introduction of the topic ” what is a fuse”. Fuses is current interrupting devices connected in series with the circuits to break or open the circuits by the fusing element when the current in the circuits exceeds a particular value which is called the safe value of … Read more
THERMAL OR STEAM POWER PLANT Introduction The thermal or steam power plant is the main source of electric power generation in India. More than 50%of electric power is produced by steam or thermal power plants in India. In this power plant, the heat energy is converted into electrical energy. The heat energy is generated … Read more
What is an Autotransformer? An Autotransformer is a one winding transformer in which a part of the winding is common to both primary and secondary circuits. The general construction and operating principle of an Autotransformer are the same as that of the conventional two winding transformers. The Autotransformer differs from a conventional two winding transformer … Read more
What is a Transformer? Let’s start our new article on what is a transformer? In this article, we will discuss the transformer principle, construction, and working, and also the advantages of a transformer. A transformer is a static device (has no rotating parts) that consists of two or more stationary electrical circuits interlinked by a … Read more
Fleming’s left hand rule and right hand rule Fleming’s left hand rule Fleming’s left hand rule is considered as one of the easiest and accurate ways of finding the direction of force/motion of a conductor in an electric motor when the direction of the current and electric field are known. Whereas Fleming’s right-hand rule is … Read more