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Articles by Manish Kumar Saini
Page 50 of 80
Difference between BJT and IGBT
Bipolar Junction Transistor (BJT) and Insulated Gate Bipolar Transistor (IGBT) are two types of transistors that are used in electronic circuits to control the currents. Read through this article to get an overview of how BJTs and IGBTs function and the major differences between them.What is BJT?BJT stands for Bipolar Junction Transistor. The BJT is a three layer, three terminal semiconductor device which is used in the electronic circuit for switching and amplification of signalsA BJT is formed by sandwiching either a P-type or N-type material between two layers of N-type material or P-type material respectively. Thus, based on the ...
Read MoreDifference between Power Transformer and Distribution Transformer
Power transformers and Distribution transformers are extensively used in power systems for stepping up and down the voltage level for various applications such as transmission and distribution. Read through this article to find out the major differences between power transformers and distribution transformers and how they function.What is a Transformer?A Transformer is a static electrical machine which changes the level of voltage and current in a circuit without changing the frequency of the supply. Transformers works on the principle of electromagnetic induction.Based on the design, operation, purpose of use, transformers are classified into different types such as auto-transformer, current transformer, ...
Read MoreDifference between Conductors and Insulators
Both conductors and insulators are extensively used in various fields of electrical and electronics engineering. In this article, we will compare and contrast the various features of conductors and insulators and how they function.What is a Conductor?The material which allows the electric current to pass through it is known as conductor. In other words, the material which has less than 4 electrons in its outermost shell is known as conductor.When electric potential is applied across a conductor, the electrons can freely move from atom to atom. In a conductor, the valance band and the conduction band are overlapped each other. ...
Read MoreDifference between LED and Halogen
LED lamps consume less energy as compared to Halogen lamps. LED lamps are cost efficient too. Read through this article to find out the major differnces between LEDs and Halogen lamps and how they function.What is LED Lamp?An electric lamp which produces light by using light emitting diodes or LEDs is known as an LED lamp or LED light bulb. An LED lamp works on the principle of electroluminescence, i.e. it emits the light due to the interaction of an electric field with a suitable solid.Basically, an LED is a specially doped PN junction diode which is made of special ...
Read MoreDifference between Series and Parallel Circuit
Series and Parallel electric circuits are heavily used in various applications such as resistive series circuits, voltage divider circuits, home appliances, etc. It is important to have a good knowledge of how these circuits work. Go through this article to get an overview of how Series and Parallel circuits operate and how they differ from each other.What is an Electric Circuit?An electrical network which has closed path for electric current to flow is known as electric circuit or circuit. An electric circuit consists various circuit elements such as energy sources, resistors, inductors, capacitors, etc. An electric circuit must have at ...
Read MoreHow much energy is recovered by regenerative braking?
The method in which no energy is drawn from the supply system during braking period and some energy is fed back to the supply system is known as regenerative braking.Calculation of Energy Returned During RegenerationWhen the train is accelerated up to a certain speed, then it acquires energy, (known as kinetic energy), corresponding to that speed and this kinetic energy is given by, $$\mathrm{KE\mathrm{\: =\: }\frac{1}{2}\mathit{mv^{\mathrm{2}}}}$$During coasting period, a part of this stored energy is utilized in propelling the train against frictional and other resistances to motion and hence the speed of the train falls. Under ideal conditions, i.e. no ...
Read MoreDetermination of Specific Energy Output of an Electric Train
Energy output is the energy required for the propulsion of a train, it is mainly for accelerating the train from the rest to maximum velocity (Vm) and the energy required to overcome the gradient and track resistance to motion.The specific energy output is defined as −$$\mathrm{Specific\: Energy\: Output\mathrm{\: =\: }\frac{Energy\: output\: in \: watt \: hours}{Weight\: of\: train\: in\: tons\times distance\: of\: run\: in \: km}}$$The specific energy output is measured in watt-hours per ton-km. The specific energy output is used for comparing the dynamic performances of trains operating to different schedules.Determination of Specific Energy Output of an Electric TrainAssume ...
Read MoreDifference between Synchronous and Asynchronous Motor
In this article, we will see what a synchronous motor is and how it differs from an asynchronous motor. We will compare and contrast the various features of synchronous and asynchronous motors.What is an Electric Motor?The electrical machines that convert electrical energy into mechanical energy are known as electric motors. Based on the electric supply input to the motor, they are of two types viz.: AC motor and DC motor. The AC motors are further classified into two types viz. − synchronous motors and asynchronous motors. These motors have some similarities and some differences in their construction, operation and performance.What ...
Read MoreDifference between Metro Train and Conventional Train
Both Metro trains and conventional trains are popular modes of transportation used by the public for moving from one place to another. In this brief article, we will see how these two types of trains differ in their features.Metro TrainMetro trains are high-speed trains that are powered by the electricity grid. In general, a metro train has four to five air-conditioned coaches. Actually, the metro trains are the new era transportation concept developed by many countries to control the pollution created by conventional vehicles and traffic caused by them. The metro train is one of the fastest ways to travel ...
Read MoreDifference between Capacitor and Inductor
In this article, we will compare and contrast the features of a capacitor and highlight how it differs from an inductor, considering various parameters such as stored energy, flow of current, behaviour in AC and DC circuits, types and applications, etc.What is a Capacitor?An electric circuit element which has ability to store the charge in electrostatic field is known as capacitor. The capacitor is a passive circuit element because it cannot generate and amplify the power in a circuit. Generally, a capacitor consists of two metallic plates, placed parallel to each other and are separated by a dielectric medium. The ...
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