Answer Posted / mhd hassan

5p10 = 5% and 10 time nominal current

During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.

1884

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what is the advantages of having in-built acvvvf (without seperate inverter in the control panel)in the drive system of elevators?

3318

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why we have and use 3 phase not 2 or 4 or other in power system?

2066

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What is touch potential and step potential?

2072

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What is Long rod insulator and it's applications..? merits over the disc insulator ..?

1855

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I completed my BE EEE degree 2006 .... which license should i apply .... ?????

1630

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why only exciting current is shown not primary current in transformer???

1805

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For an induction motor wat is the loading/unloading cycle duration or interms of L/UL ratio/ percentage?

2018

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what reason of line current and phase current in star connection and line current and phase current not equal in delta connection?

2041

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What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?

1063

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What is the two pole structure?

1859

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What shall be the secondary output voltage if the primary winding of a 220/6V, 50 Hz transformer is energized by an 110V, 60 Hz supply?

1298

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What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?

2137

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What is meant by short-pitched winding?

1134

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what is the need to express current and voltage in rms value? rms value is also called as effective value,what is effective value?

1898

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