Star Delta Control Circuit

Star Delta Control Circuit: The star delta transformation is another technique useful in solving complex networks. Basically, any three circuit elements, i.e. resistive, inductive or capacitive, may be connected in…

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Starting of DC Motors

Starting of DC Motors: At the time of Starting of DC Motors (n = 0), the induced emf of a motor is zero such that the current drawn from rated…

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Choice of Transformer Connection Diagram

Choice of Transformer Connection Diagram: The different choice of Transformer Connection Diagram are namely, Star/star: This is economical for small HV transformers as it minimizes the turns/phase and winding insulation.…

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Three Phase Transformer Connections

Three Phase Transformer Connections: In generation, transformation, transmission and utilization of electric energy it can be shown that it is economical to use the three-phase system rather than the single-phase.…

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Electrical Braking of Polyphase Induction Motors

Electrical Braking of Polyphase Induction Motors: Electrical Braking of Polyphase Induction Motors which consists of different types, namely, Plugging (or Counter-Current Braking) Dynamic (or Rheostatic) Braking Regenerative Braking 1. Plugging…

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Three Phase Balanced Circuit

Three Phase Balanced Circuit: The analysis of Three Phase Balanced Circuit is presented in this section. It is no way different from the analysis of AC systems in general. The…

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Pole Changing of Induction Motor

Pole Changing of Induction Motor: Pole Changing of Induction Motor - For a given frequency, the synchronous speed is inversely proportional to the number of poles. Synchronous speed, and therefore,…

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Transformers Articles

Transformers Articles: Approximate Equivalent Circuit of Transformer : Approximate Equivalent Circuit of Transformer – In constant frequency (50 Hz) ... Audio Frequency Transformer : Audio Frequency Transformer is used at…

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