STD:-XII SEC:-A ROLL NO :- 2. Transformer(Class 12 Investigatory Project) 1. The interesting part is that reverse is also true, when a magnetic flux line fluctuates around a piece of wire, a current will be induced in it. At the customer end this voltage is stepped down with the help of step-down transformer.Power drawn from AC source = Power delivered to the load or An ideal transformer has 100 % efficiency. By continuing to use our website, you agree to our CBSE Class 12th Physics Notes: Alternating Current (Part ‒ I)CBSE Class 12th Physics Notes: Alternating Current (Part ‒ II) M.B.S Public school Department of physics CERTIFICATE This is to certify that Ayashkant Mishra, a student of class XII-A has successfully completed the research on the below mentioned project under …

Secondary coil :- Secondary coil has ‘n’ number of turns of any wire(like copper etc.) Transformer in the simplest way can be described as a thing that converts. Soft iron core :- However, when we study more about it in-depth and in connection to electric current it is defined as a static device that changes the level of voltage between circuits. The value of this emf depends on the number of turns in the secondary.In a transformer, if all the magnetic flux linked with the secondary then,The primary coil of a transformer is connected to an AC source and load is connected to the secondary coil of the transformer.The transformers which are used to convert low voltages into higher ones are called ‘step-up’ transformer. Such type of loss is minimized by using a magnetic material having low hysteresis loss.Heat is generated as AC flows through the copper coil. Applications of Transformer in Long Distance Power Transmission. Transformer only step-up or step-down the level of AC voltage or AC Current. In this process, energy is lost in the form of heat.
There are various types of transformers which are classified based on the following factors;Commonly used transformer type, depending upon voltage they are classified as:In a transformer, we will find different types of cores that are used.Lets us explain. Learn more about the working principle, types along with diagrams. Electric power generated in power stations is transmitted over long distances with the help of transformer. Transformer operates when both circuits take effect of mutual induction. In step-up transformer The transformers which are used to convert high voltages into lower ones are called ‘step-up’ transformer.Electric power generated in power stations is transmitted over long distances with the help of transformer.To reduce the loss of electrical energy (in the form of heat), a step-up transformer is used at power station to step-up voltage (or to lower the current). The transmission current is AC. There are usually two coils, primary coil and secondary coil on the transformer core. The loss can be minimized by using by using an insulated laminated core.This website uses cookie or similar technologies, to enhance your browsing experience and provide personalised recommendations. The efficiency of a normal transformer is less than 1.Power output of a transformer is less than the power input due to unavoidable losses of energy.In one complete cycle of AC, the core of transformer is taken through a complete cycle of magnetization. are auxiliaries of transformer. Transformer in physics is described as a device that is used in the power transmission of electric energy. It rises to a maximum value ΦInduced emf per turn = rate of change of flux per turnRMS value of emf induced in winding = RMS value of emf per turn * no of turnsK is called the voltage transformation ratio, which is a constant.efficiency. When an alternating current pass through the primary coil, forms a varying magnetic flux as per faraday’s law of electromagnetic induction and this change in magnetic flux induces an emf (electromotive force) in the secondary coil which is linked to the core having a primary coil.

Get CBSE class 12th Physics notes on Alternating Current (Part – III). There won’t be any core losses or IThe flux formed is a sinusoidal wave. It is commonly used to increase or decrease the supply voltage without a change in the frequency of AC between circuits. This was what Michael faraday found in 1831 which is the fundamental working principle of electric generators as well as transformers.The major parts of a single-phase transformer consist of;The core acts as a support to the winding in the transformer. Primary windings and secondary windings.The primary and secondary windings are insulated from each other using insulation coating agents.Insulation is necessary for transformers to separate windings from shorting the circuit and thus facilitating the mutual induction. NCERT Books. It also provides a low reluctance path to the flow of magnetic flux. Construction:-A Transformer consists of :-Primary coil:- Primary coil has ‘n’ number of turns of wire over a piece of soft iron core. Let us focus now on the construction of Transformer. In this part, we will manly focus study important concepts related to transformer.Get CBSE class 12th Physics key notes on alternating current.



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