what is difference between isolation and ultra isolation transformer?, what is the method of testing ?

0 Answers  

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what are lightning masts?what is their purpose???

1 Answers   Mecon,

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how squirrel cage & slip ring motor works? how they differ from each other

1 Answers  

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HOW TO WORK A VFD?SAY SIMPLE METHOD

1 Answers   GE,

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Explain the operation of grid connected central solar inverter ?

0 Answers  

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What is fault level? How can be calculate the fault level?

1 Answers  

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why Batteries & Battery chargers are used in substation? what is the different between UPS & battery charger?

4 Answers   DLF,

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how to calculate the no. of earth pits required for an electrical installation?

1 Answers   Mepax,

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Slow acting fuses are most often used for which application a) Lighting circuit b) heating circuit c) Motor D) Radar circuit

1 Answers  

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I have 11KV/415V power distribution transformer. I have found unbalance current in LT (415V) side. Also observed that unbalance voltage (3V) at LV side due to HV side unbalance voltage. What should I check for this? Also, the same LV side load can run in balance on captive power.

1 Answers  

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1.generator rated as 1000 mva,11kv .8 pf what will 0.8 pf will indicate? 1.max pf it can supply 2.min pf it can supply like this 4 options there what is answer.explain

5 Answers   Power Grid,

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Why in a three pin plug the earth pin is thicker and longer than the other pins?

18 Answers   LG, NTPC,

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