ydeepak297@gmail.com

Transformer Core Q. Explain core, core cross section, yoke cross section of transformer. Core of the transformer is the main magnetic circuit and it offers low reluctance path for the flux. Special attention is given to core as it controls important operating characteristics such as no load current, losses, efficiency etc. hence high resistance and … Read more

Shell Type Transformer Q. Explain working of shell type transformer. In this type of transformer core covers the larger portion of windings. As shown in Figure windings are wound on central portion of the limb, which carries total flux while the side limbs completes the flux path and carry half. In this high voltage and … Read more

Core Type Transformer Q. Explain core type transformer. Core type transformer In this type of transformer winding covers the large portion of core. Windings (LV and HV) are wound on the limb of the core which is made up of laminations. Fig. 1.2.1 shows the construction of core type transformer. The laminations which connects two … Read more

Types of Autotransfomer Q. What are the two different types of Autotransformer?       Type No.1 : Step down Autotransformer       Type No.2 : Step up Autotransformer Generally stepdown type is universally used to get a variable voltage from a supply (primary) Relations of Primary / Secondary Voltage, Currents and Transformation Rations … Read more

Advantages Disadvantages and Application of Autotransformer Q. What are advantages of an autotransformer Advantages of Autotransformer As only one winding serves as primary and also secondary, there is a saving in winding material i.e copper saving. Size is small. Cost is lesser than two winding transformer. very easy way of changing voltage. Desired voltage can … Read more

Construction of Autotransformer  AutoTransformer Main parts of Auto transformer    1. Core    2. Winding    3. Wheel (Handle)    4. Brush    5. Outer    6. Terminal box. Core : Core is made of best quality silicon steel stampings assembled to form circular (cylindrical shape). Winding : Super enamelled copper wire of high grade copper … Read more

Mechanical Forces on Transformer To overcome the problems of mechanical forces, circular coils should be used for the windings, as they can with stand the radial forces (in circular coils radial forces are cancelled by each other). Wherever it is not possible to use the circular coils, (e.g. shell type transformer) they should be braced … Read more

Comparison of Power Transformer and Distribution Transformer Q. Compare power transformer with distribution transformer Sr. No. Power Transformer Distribution Transformer 1 The rating of power transformer is very high (in MV As). The rating is in KVA and small. 2 This are used at generating stations is very high voltage transmission line and at receiving … Read more