A single-phase transformer consists of primary and secondary winding put on a magnetic core. Magnetic core is used to confine flux to a definite path.Transformer cores are made from thin sheet(called lamination) of high-grade silicon steel.The lamination reduce eddy-current loss and the silicon steel reduced hysteresis loss. the lamination are insulated from one another by heat resistant enamel insulation coating. L-type and E-type lamination are used. The limitations are built up into stack and the joints in the lamination are staggered to minimize air gaps(which require large exciting currents).The lamination are tightly clamped.
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Liquid vapour displays (LVDs) are the latest in economical display technology.They operate on the principle of a new reflective passive dis... -
The outline secondary storage which is always available to a processor is called direct access storage devices (DASD). The commonly used DA...
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Most alternators have the rotating field and the stationary armature.The rotating-field type alternator has several advantages over the ro...
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