Answer Posted / ghanshyam pandey

In ONLINE UPS, the load is always connected to
inverter output only in both the cases, whether normal
power supply is available or not.

In OFFLINE UPS, Inverter output is connected to load only
when normal AC power supply fails, means when AC power is
available it is directly goes to output.

HOW THE OLTC TRANSFORMER SAVE ENERGY IN COMPARISON TO OFF LINE TRANSFORMER AND IS IT ECONOMICAL TO REPLACE THE OFF LINE TRANSFORMER TO OLTC TRANSFORMER

2200

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sir i have a car stereo system and there is jack on him so can u tell me a way to find out their power terminals on the jack or on the circuit board"

2066

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What are the basic properties of signal flow graph?

1221

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why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?

2212

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Why are lt windings placed near the core?

1094

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Mention what are the types of semi-conductors?

1217

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10 Mtr Hight of Lighting Arrestar how much area coverd??

2505

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WHAT CAUSED THRESHOLD VOLTAGE TO EXIST?

4073

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In 11/0.414 KV Parralel supply network with Bus tie closed what will be the fault level is it doubled or halved??

2075

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IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?

4146

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what is the difference between changer, converter and transformer?

1543

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how can maintain the power factor and why and this is how do work tell us

2100

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for opening electrical shop, tips needed.

1834

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What is mean by hot and cold loop testing? What is the difference between them?

1125

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Is there any type of starter for DC motor other than two point,Three point and Four point starters?

2043

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