What is static Device & Mechanical device? Is transformer a static device?

5 Answers   ABB, Emco,

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what is the difference between relay and a contactor.

5 Answers   Siemens,

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what is the difference between between open delta and broken delta?

5 Answers   Reliance,

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If one lamp connect between two phases it will glow or not?

9 Answers  

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WHAT IS REACTIVE POWER?

2 Answers  

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In between UPS out going changer over switch and ups raising main input, both side cable gland producing heat but the cable doesn't get heat,Why?

0 Answers  

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1)What will happen when 240 VDC supply is connected to 240VAC supply(DC supply +ve is connected to phase of AC supply & DC supply is to neutral of AC supply). 2)Also what will happen when 240 VDC supply is connected to 240 VAC supply in reverse polarity as of Sr. No 1.

2 Answers  

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what curve and rateing would you use for a three phase 0.75kw motor?

0 Answers  

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what is difference between DC and Ac

5 Answers   Birla,

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What is the difference between switch gear and control gear ?

2 Answers   QU,

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need of capacitor used in plant

3 Answers  

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What is the meaning of Dyn11 of Transformer.

17 Answers  

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