In this article, we will discuss Power Stages and Efficiency in DC Machine. This helps to determine the performance of the DC machine. The power flow analysis of any machine is important to determine its characteristics of the machine. In the operation of any machine, the input power is delivered to a machine at some definite… Continue reading Power Stages and Efficiency in DC Machine
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Losses in DC Machine
The DC machine is used to convert the electrical power into mechanical power or mechanical power into electrical power. During the conversion of energy, always there are some amounts of energy are lost. In this article, we will discuss different losses occurs in DC machine. This energy converted into heat is called energy loss. The energy loss… Continue reading Losses in DC Machine
Working Principle of DC Generator by Single loop Gen.
To understand the working of the DC generator, take a single loop generator. The figure of this generator is as shown in the below figure. A loop made from two conductors. Conductor-1 is AB and conductor-2 is CD. A single loop ABCD is made from these conductors. As shown in the above figure, a rectangular… Continue reading Working Principle of DC Generator by Single loop Gen.
EMF Equation of DC Generator
EMF Equation of DC Machine Consider a DC machine with the following parameter; P = Number of poles Ф = Flux per pole (Wb) A = Number of parallel paths in the armature Z = Total number of Armature conductor N = Speed of Rotor (RPM) Now, ф is the flux produced by one pole. If there is P number of poles presents in… Continue reading EMF Equation of DC Generator
DC Generator
What is a DC Generator? A DC generator is an electrical machine whose main function is to convert mechanical energy into electricity. When the conductor slashes magnetic flux, an emf will be generated based on the electromagnetic induction principle of Faraday’s Laws. This electromotive force can cause a flow of current when the conductor circuit… Continue reading DC Generator
Testing of DC Machine
Open Circuit Test The open-circuit test is expected to decide a DC machine’s open-circuit characteristic or magnetic characteristic. The open-circuit test gives the MMF and, subsequently, the excitation current or field current expected to produce the required voltage on no heap at a settled speed. The open-circuit characteristic curve demonstrates the variety of instigated emf as an element of… Continue reading Testing of DC Machine
DC Motor
What is a DC Motor? A DC motor is defined as a class of electrical motors that convert direct current electrical energy into mechanical energy. From the above definition, we can conclude that any electric motor that is operated using direct current or DC is called a DC motor. We will understand the DC motor… Continue reading DC Motor
Ohm`s Law
What Is Ohm’s Law Ohm’s law is the relationship between voltage, current and resistance and how they relate to each other. Ohm’s law was developed by a German physicist named Georg Ohm who undertook many experiments to develop his theory including measuring current by touching electrical circuits to see how much it hurt. The higher… Continue reading Ohm`s Law
Cause of Resistance
An ideal conductor would be made from a material which posed no resistance to the flow of electrons. In the real world though, all materials will give some level of resistance, the level of resistance can also vary within the conducting material used. Some of the things which vary a conductors level of resistance are listed… Continue reading Cause of Resistance
Measurement of resistance
Resistance is measured in the SI units of Ohm’s which is represented with the Greek letter omega Ω. Materials are tested for their level of resistance by measuring the amount of current that passes across the conductor. An instrument for measuring resistance is called an ohmmeter.