Give a list of the factors involved for selecting a factory drive.

Factors involved in selection of factory drives:   - Supply system         :  DC or AC   - Rating                   :  kW, MW   - Drive                     :  constant speed, Variable speed - Special Condition      :  High starting torque, Hazardous location, Traction...

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What are the various losses occurring in a transformer?

Various losses in a transformer (i). Core or iron losses: Core flux in transformer remains constant for all load. Its variation is 1 to 3%. This losses are due to eddy current and hysteresis in  the core of transformer.  (i). Copper losses : These losses are due to ohmic resistance of transformer windings. Therefore,  ...

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Explain the construction and working principle of a transformer.

Transformer Construction: The simple element of a transformer consists of two coils having mutual inductance and a laminated steel core. The two coils are insulated from each other with steel core. Other necessary parts are : some suitable container for assembled core windings from its container: Suitable bushings (either of porcelain, oil- filled or capacitor type) for insulating and bringing out the terminals from the tank. Core is constructed...

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