Deepakkumar Yadav
Deepakkumar Yadav A starter will contain protective devices for the motor. At a minimum this would include a thermal overload relay. The thermal overload is designed to open the starting circuit and thus cut the power to the motor in the event of the motor drawing too much current from the supply for an extended time. The … Read more
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
RCCB full form RCCB :- Residual Current Circuit Breaker ↓ RCCB internal Circuit Diagram ↓
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
In this video I will show you what is Holding Contact of Contactor, Contactor Holding Circuit क्या है, NO NC of Stater. ↓ Photos ↓
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