why we step down the voltage from 440 to 220 in machines

4 Answers  

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how to calculate short circuit calculation of the transformer by usuing the percentage impedence? formula needed.

2 Answers   L&T,

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HOW TO WORK A VFD?SAY SIMPLE METHOD

1 Answers   GE,

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What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?

0 Answers  

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what is meant by cbct elr?

3 Answers  

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how step down and step up voltage is occured in transformer

3 Answers  

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What is burden of ct,explain very simple

2 Answers   KSEB,

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What are differences between Voltage, EMF & Potential difference ?

0 Answers  

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What are the advantages and disadvantages of short-pitched winding?

0 Answers  

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When to use Oil Transformer type and When to use Dry type? What is the difference between both?

2 Answers   ABC,

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hi... Can anybody give me description of type-2 coordination, IP protection, NEMA standards ? Thanks..

2 Answers   KSEB,

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What is evaporator & condencer & compressor

0 Answers   Standard Chartered,

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