Answer / mayadhar81

Ups is untruppted power supply means Power is continuous
come from this ups if your main power suppy is on or off.

And then inverter is working after power supply is
gone.then invertor is on .

Answer / dipak thumar

Inverter is a part of UPS. in inverter DC supply is fed
through Battery and Battery is continuously charged through
Rectifier circuit from AC supply. in cace of AC supply is
available, inverter gets DC from Rectifier circuit and when
AC fails, it takes from battery.

Discribe type of fault in DOL and stardelta startor.

0 Answers  

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What is the formula for calculating no-load current?

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how r charge carriers produced

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how can we represne the analog signal and digital signal if want to measure the speed and we have to use PLC

2 Answers  

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I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)

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list down a few application of ac & dc in a generating station?

1 Answers  

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How neutral voltage for transformer decided? eg 33kv neutral voltage for 200MVA transformer?

1 Answers   MEIL,

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How vaccum is formed to create a vaccum interrupter or anything related with vaccum?

6 Answers  

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Is there any reason that a vertical motor can not be mounted horizontally ? I happen to have one and would like to use it horizontally to save money by not buying a new horizontal motor.

1 Answers  

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pre arcing time of ehv breaker

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which type of harmonics minimum produce in 12 pulse rectiformer transformer? a)3rd b)5th c)7th d)11th

4 Answers   Power Grid, Powerica,

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What do you meant by soft start?

1 Answers  

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